{"id":131,"date":"2025-06-17T05:09:24","date_gmt":"2025-06-17T05:09:24","guid":{"rendered":"https:\/\/sutrasys.com\/Falcon\/?page_id=131"},"modified":"2026-04-13T06:30:53","modified_gmt":"2026-04-13T06:30:53","slug":"buckle_example","status":"publish","type":"page","link":"https:\/\/sutrasys.com\/Falcon\/buckle_example\/","title":{"rendered":"BuckleExample"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"nfd-container nfd-p-lg nfd-rounded-lg nfd-bg-surface nfd-theme-light is-style-nfd-theme-light wp-block-group alignfull nfd-bg-effect-grid-3 is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50)\">\n<div class=\"nfd-gap-lg wp-block-group alignfull is-vertical is-content-justification-left is-layout-flex wp-container-core-group-is-layout-b1d40f6b wp-block-group-is-layout-flex\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<h3 class=\"wp-block-heading nfd-text-huge nfd-text-primary nfd-text-balance has-text-align-center\">Rectangular Tube<\/h3>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\">The following model is solved using&nbsp;<strong>CalculiX<\/strong>&nbsp;<strong>solver<\/strong>.<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Tutorial with Complete Steps,<\/p>\n<\/blockquote>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<iframe loading=\"lazy\" width=\"50%\" height=\"250\" src=\"https:\/\/www.youtube.com\/embed\/0A2WAPbXh4Q\" frameborder=\"0\" allowfullscreen><\/iframe>\n<\/div>\n<\/div>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Objective<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Analyse the buckling behaviour of a hollow box under compression, considering a small internal pressure.<strong>\u00a0<\/strong><\/p>\n\n\n\n<div class=\"nfd-text-base nfd-gap-xl wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"212\" height=\"314\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/hollow.png?fit=212%2C314&amp;ssl=1\" alt=\"\" class=\"wp-image-1104\" style=\"aspect-ratio:0.675125;width:167px;height:auto\" srcset=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/hollow.png?w=212&amp;ssl=1 212w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/hollow.png?resize=203%2C300&amp;ssl=1 203w\" sizes=\"auto, (max-width: 212px) 100vw, 212px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Parameter<\/strong><\/td><td><strong>Value<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">W : Width ( X , Y)<\/td><td>100 mm<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">H : Height ( Z )<\/td><td>150 mm<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Pressure : Elastic Load Limit<\/td><td>40 KN<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>1. Define Material<\/summary>\n<div class=\"nfd-container nfd-p-md  nfd-wb-features__features-3 is-style-nfd-theme-white wp-block-group alignfull is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:var(--wp--preset--spacing--10);padding-bottom:var(--wp--preset--spacing--10)\">\n<p class=\"wp-block-paragraph\">Material 1 : Steel<\/p>\n\n\n\n<div class=\"nfd-text-base nfd-gap-xl wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Parameter<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Value<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Young\u2019s Modulus<\/td><td class=\"has-text-align-center\" data-align=\"center\">210000 MPa<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Poisson\u2019s Ratio<\/td><td class=\"has-text-align-center\" data-align=\"center\">0.3<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Density<\/td><td class=\"has-text-align-center\" data-align=\"center\">7.8E-09 tonne\/mm\u00b3<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>2. Define Shell Property<\/summary>\n<div class=\"nfd-container nfd-p-md  nfd-wb-features__features-3 is-style-nfd-theme-white wp-block-group alignfull is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:var(--wp--preset--spacing--10);padding-bottom:var(--wp--preset--spacing--10)\">\n<div class=\"nfd-text-base nfd-gap-xl wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"260\" height=\"242\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/06\/image-18.png?fit=260%2C242&amp;ssl=1\" alt=\"\" class=\"wp-image-440\" style=\"width:260px;height:auto\"\/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Parameter<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Value<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Thickness<\/td><td class=\"has-text-align-center\" data-align=\"center\">1 mm<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Material<\/td><td class=\"has-text-align-center\" data-align=\"center\">Steel<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>3. Meshing<\/summary>\n<div class=\"nfd-container nfd-p-md  nfd-wb-features__features-3 is-style-nfd-theme-white wp-block-group alignfull is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:var(--wp--preset--spacing--10);padding-bottom:var(--wp--preset--spacing--10)\">\n<div class=\"nfd-text-base nfd-gap-xl wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"377\" height=\"499\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/1Model.png?resize=377%2C499&#038;ssl=1\" alt=\"\" class=\"wp-image-1093\" style=\"width:auto;height:350px\" srcset=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/1Model.png?w=377&amp;ssl=1 377w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/1Model.png?resize=227%2C300&amp;ssl=1 227w\" sizes=\"auto, (max-width: 377px) 100vw, 377px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Element size 8.33 mm x 10 mm.<br>Shell elements are created using 2D Mapped Mesh feature.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>4. Boundary Conditions<\/summary>\n<div class=\"nfd-container nfd-p-md  nfd-wb-features__features-3 is-style-nfd-theme-white wp-block-group alignfull is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:var(--wp--preset--spacing--10);padding-bottom:var(--wp--preset--spacing--10)\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"366\" height=\"497\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/2Imperfection.png?fit=366%2C497&amp;ssl=1\" alt=\"\" class=\"wp-image-1095\" style=\"width:auto;height:350px\" srcset=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/2Imperfection.png?w=366&amp;ssl=1 366w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/2Imperfection.png?resize=221%2C300&amp;ssl=1 221w\" sizes=\"auto, (max-width: 366px) 100vw, 366px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li class=\"\">Lower Nodes : All DOF (1 \u2013 6) Constrained<\/li>\n\n\n\n<li class=\"\">Upper Nodes : All DOF (1 \u2013 6) Constrained<\/li>\n\n\n\n<li class=\"\">Internal Pressure 1 MPa&nbsp; applied to inner surfaces (Yellow)<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>5. Static Analysis with Calculix Solver<\/summary>\n<div class=\"nfd-container nfd-p-md  nfd-wb-features__features-3 is-style-nfd-theme-white wp-block-group alignfull is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:var(--wp--preset--spacing--10);padding-bottom:var(--wp--preset--spacing--10)\">\n<div class=\"nfd-text-base nfd-gap-xl wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"814\" height=\"750\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/Disp_res.png?fit=814%2C750&amp;ssl=1\" alt=\"\" class=\"wp-image-1226\" style=\"width:600px\" srcset=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/Disp_res.png?w=814&amp;ssl=1 814w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/Disp_res.png?resize=300%2C276&amp;ssl=1 300w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/Disp_res.png?resize=768%2C708&amp;ssl=1 768w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/Disp_res.png?resize=600%2C553&amp;ssl=1 600w\" sizes=\"auto, (max-width: 814px) 100vw, 814px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Total Displacement<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>6. Post Processing<\/summary>\n<div class=\"nfd-container nfd-p-md  nfd-wb-features__features-3 is-style-nfd-theme-white wp-block-group alignfull is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:var(--wp--preset--spacing--10);padding-bottom:var(--wp--preset--spacing--10)\">\n<div class=\"nfd-text-base nfd-gap-xl wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"425\" height=\"157\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/06\/image-28.png?fit=425%2C157&amp;ssl=1\" alt=\"\" class=\"wp-image-452\" srcset=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/06\/image-28.png?w=425&amp;ssl=1 425w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/06\/image-28.png?resize=300%2C111&amp;ssl=1 300w\" sizes=\"auto, (max-width: 425px) 100vw, 425px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Export deformed data from result : Export deformed data (scaled) to INP Format.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>7. Import Deformed scaled INP<\/summary>\n<div class=\"nfd-container nfd-p-md  nfd-wb-features__features-3 is-style-nfd-theme-white wp-block-group alignfull is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:var(--wp--preset--spacing--10);padding-bottom:var(--wp--preset--spacing--10)\">\n<div class=\"nfd-text-base nfd-gap-xl wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"426\" height=\"254\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/06\/image-29.png?fit=426%2C254&amp;ssl=1\" alt=\"\" class=\"wp-image-453\" srcset=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/06\/image-29.png?w=426&amp;ssl=1 426w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/06\/image-29.png?resize=300%2C179&amp;ssl=1 300w\" sizes=\"auto, (max-width: 426px) 100vw, 426px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Deformed scaled INP with OVERWRITE.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>8. Modify STEEL Material Property<\/summary>\n<div class=\"nfd-container nfd-p-md  nfd-wb-features__features-3 is-style-nfd-theme-white wp-block-group alignfull is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:var(--wp--preset--spacing--10);padding-bottom:var(--wp--preset--spacing--10)\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"528\" height=\"439\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/6Mat_Plasticity.png?fit=528%2C439&amp;ssl=1\" alt=\"\" class=\"wp-image-1097\" style=\"object-fit:cover\" srcset=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/6Mat_Plasticity.png?w=528&amp;ssl=1 528w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/6Mat_Plasticity.png?resize=300%2C249&amp;ssl=1 300w\" sizes=\"auto, (max-width: 528px) 100vw, 528px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Add Plastic Property<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Stress (MPa)<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Strain Value<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">100<\/td><td class=\"has-text-align-center\" data-align=\"center\">0<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">200<\/td><td class=\"has-text-align-center\" data-align=\"center\">0.3<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">300<\/td><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>9. Boundary Conditions<\/summary>\n<div class=\"nfd-container nfd-p-md  nfd-wb-features__features-3 is-style-nfd-theme-white wp-block-group alignfull is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:var(--wp--preset--spacing--10);padding-bottom:var(--wp--preset--spacing--10)\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"523\" height=\"647\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/7Conditions.png?fit=523%2C647&amp;ssl=1\" alt=\"\" class=\"wp-image-1098\" style=\"width:auto;height:350px\" srcset=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/7Conditions.png?w=523&amp;ssl=1 523w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/7Conditions.png?resize=243%2C300&amp;ssl=1 243w\" sizes=\"auto, (max-width: 523px) 100vw, 523px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li class=\"\">Lower Nodes : All DOF (1 \u2013 6) Constrained (Green)<\/li>\n\n\n\n<li class=\"\">Upper Nodes : All DOF (1 \u2013 6) Constrained (Green)<\/li>\n\n\n\n<li class=\"\">Specified Displacement: -40 in Z direction (Pink)<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>10. Static Non-Linear Analysis Settings (Calculix)<\/summary>\n<div class=\"nfd-container nfd-p-md  nfd-wb-features__features-3 is-style-nfd-theme-white wp-block-group alignfull is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:var(--wp--preset--spacing--10);padding-bottom:var(--wp--preset--spacing--10)\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"431\" height=\"415\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/06\/image-31.png?fit=431%2C415&amp;ssl=1\" alt=\"\" class=\"wp-image-455\" srcset=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/06\/image-31.png?w=431&amp;ssl=1 431w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/06\/image-31.png?resize=300%2C289&amp;ssl=1 300w\" sizes=\"auto, (max-width: 431px) 100vw, 431px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>Analysis Results<\/summary>\n<div class=\"nfd-container nfd-p-md  nfd-wb-features__features-3 is-style-nfd-theme-white wp-block-group alignfull is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:var(--wp--preset--spacing--10);padding-bottom:var(--wp--preset--spacing--10)\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"945\" height=\"770\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/buckle_model.png?fit=945%2C770&amp;ssl=1\" alt=\"\" class=\"wp-image-1223\" style=\"width:600px\" srcset=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/buckle_model.png?w=945&amp;ssl=1 945w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/buckle_model.png?resize=300%2C244&amp;ssl=1 300w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/buckle_model.png?resize=768%2C626&amp;ssl=1 768w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/buckle_model.png?resize=600%2C489&amp;ssl=1 600w\" sizes=\"auto, (max-width: 945px) 100vw, 945px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Deformed result<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"826\" height=\"743\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/buckle_vonmises.png?resize=826%2C743&#038;ssl=1\" alt=\"\" class=\"wp-image-1228\" style=\"width:600px\" srcset=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/buckle_vonmises.png?w=826&amp;ssl=1 826w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/buckle_vonmises.png?resize=300%2C270&amp;ssl=1 300w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/buckle_vonmises.png?resize=768%2C691&amp;ssl=1 768w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/buckle_vonmises.png?resize=600%2C540&amp;ssl=1 600w\" sizes=\"auto, (max-width: 826px) 100vw, 826px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">vonMises Stress last Step results<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"826\" height=\"743\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2026\/02\/buckle_vonmises.gif?resize=826%2C743&#038;ssl=1\" alt=\"\" class=\"wp-image-1229\" style=\"width:600px\"\/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">vonMises stress result analysis<\/p>\n<\/div>\n<\/div>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Force Displacement Plots<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Note that 40 kN is the elastic limit in the linear analysis.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-072e393d wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"759\" height=\"692\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/07\/image-2.png?fit=759%2C692&amp;ssl=1\" alt=\"\" class=\"wp-image-676\" srcset=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/07\/image-2.png?w=759&amp;ssl=1 759w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/07\/image-2.png?resize=300%2C274&amp;ssl=1 300w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/07\/image-2.png?resize=600%2C547&amp;ssl=1 600w\" sizes=\"auto, (max-width: 759px) 100vw, 759px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><strong>Full History<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"759\" height=\"693\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/07\/image-4.png?fit=759%2C693&amp;ssl=1\" alt=\"\" class=\"wp-image-680\" srcset=\"https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/07\/image-4.png?w=759&amp;ssl=1 759w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/07\/image-4.png?resize=300%2C274&amp;ssl=1 300w, https:\/\/i0.wp.com\/sutrasys.com\/Falcon\/wp-content\/uploads\/2025\/07\/image-4.png?resize=600%2C548&amp;ssl=1 600w\" sizes=\"auto, (max-width: 759px) 100vw, 759px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><strong>Detail of transition to collapse<\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\" open><summary>Download File<\/summary>\n<div class=\"nfd-container nfd-p-md  nfd-wb-features__features-3 is-style-nfd-theme-white wp-block-group alignfull is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:var(--wp--preset--spacing--10);padding-bottom:var(--wp--preset--spacing--10)\">\n<a href=\"https:\/\/sutrasys.com\/Falcon\/?sdm_process_download=1&#038;download_id=662\">NLBuckle.inp<\/a>\n\n\n\n<a href=\"https:\/\/sutrasys.com\/Falcon\/?sdm_process_download=1&#038;download_id=1239\">IntPressure.inp<\/a>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rectangular Tube Tutorial with Complete Steps, Objective Analyse the buckling behaviour of a hollow box under compression, considering a small internal pressure.\u00a0 Parameter Value W : Width ( X , Y) 100 mm H : Height ( Z ) 150 mm Pressure : Elastic Load Limit 40 KN<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"nf_dc_page":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-131","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>BuckleExample - Falcon FEA | Mystran, Calculix, Codeaster | Pre Post Analysis | Cost Effective FEA | Lightweight\u00a0FEM Pre\/Post Processor | Simplifies FEA process | For Purposes like Rotary Dynamics, Hyper Elastic Analysis, Acoustics<\/title>\n<meta name=\"description\" content=\"The following model is solved using CalculiX solver. 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