{"id":357280,"date":"2024-03-15T13:26:18","date_gmt":"2024-03-15T13:26:18","guid":{"rendered":"\/forum\/forums\/topic\/non-linear-calculation-that-fails-deformation-of-a-fence-following-an-impact\/"},"modified":"2024-03-15T13:26:18","modified_gmt":"2024-03-15T13:26:18","slug":"non-linear-calculation-that-fails-deformation-of-a-fence-following-an-impact","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/non-linear-calculation-that-fails-deformation-of-a-fence-following-an-impact\/","title":{"rendered":"Non-linear calculation that fails, Deformation of a fence following an impact"},"content":{"rendered":"

Good morning everyone,<\/p>\n

 <\/strong><\/p>\n

We are French engineering students working on a project for our school. The project is to study the impact of a car on a fence. First of all we have designed on SolidWorks the fence and a cube to simulate the car (SolidWorks files are attached in the post). <\/p>\n

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It’s look like this : <\/p>\n

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So in Ansys Workbench, we take the function “ Static structural “ <\/strong><\/p>\n

And we import our Geometry in “.step”.<\/p>\n

In the Engineering Date we delete Structural Steel and choose on the bookshelf “  General Non linear Material “ we have taken Structural Steel NL for the fence and Structural Steel S235J for the cube and fixation parts.<\/p>\n

For our settings we chose : <\/p>\n

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Contact :<\/strong><\/em> <\/p>\n

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Every contact is automatically generated by ANSYS (bounded) but the contact between the cube and the fence we choose is frictional with a Friction Coefficient of 0.2 because there is a slipping between the cube and the wire of the fence.<\/p>\n

We try to put the cube “rigid” but when he passes on this statement we can’t apply the force on the cube like explained below.  <\/p>\n

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Mesh :<\/strong><\/em> <\/p>\n

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We’ve tried to decrease the element size to 100 mm without success.<\/p>\n

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Analyze Settings : <\/strong><\/em><\/p>\n

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<\/p>\n

Large deformations are activated which is very important in our case. We’ve tried using more increments without success. <\/p>\n

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Force :<\/strong><\/em> We need to apply 50 000 N on the cube along the Y axe.<\/p>\n

We’ve found some advice on the internet and it’s said to apply step by step the effort. We’ve never had results above 20 000 N.<\/p>\n

We also add the standard Earth Gravity.<\/p>\n

<\/p>\n

<\/strong><\/p>\n

Displacement :<\/strong><\/em> Displacements of the cube are set to 0 mm on both X and Z axes to avoid the sliding of the cube. Y axe is set to free. The goal is to create a sliding connection.<\/p>\n

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Fixed Support :<\/strong><\/em> In real life the fence is fixed using a bolt and recreated with fixed supports in ANSYS.<\/p>\n


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In conclusion, we need help to solve this problem with a force of 50 000 N. We can also send you the Ansys file if needed. Thank you in advance for your help and your time.<\/p>\n

 <\/strong><\/p>\n

Best regards,<\/p>\n

https:\/\/we.tl\/t-brcfDXa829<\/a><\/p>\n","protected":false},"template":"","class_list":["post-357280","topic","type-topic","status-closed","hentry","topic-tag-non-linear"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t