Visualizing user-defined elements in Abaqus/CAE - Finite Element Modeling
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Fri, 09 Dec 2011 09:25:42 +0000Finite Element Modelingphonesystemshttps://polymerfem.com/community/finite-element-modeling-aa/visualizing-user-defined-elements-in-abaqus-cae/paged/2/#post-9978
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Sun, 25 Jan 2009 06:05:26 +0000Finite Element ModelingJorgenhttps://polymerfem.com/community/finite-element-modeling-aa/visualizing-user-defined-elements-in-abaqus-cae/paged/2/#post-6494Success
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Tue, 20 Jan 2009 04:37:38 +0000Some time ago, I had managed to sort this problem out. It was indeed a change in the shape function ordering. I verified the results with the work of a colleague of mine running the same code in Deal II. Our results are identical, and logical.]]>Finite Element Modelingaas0092https://polymerfem.com/community/finite-element-modeling-aa/visualizing-user-defined-elements-in-abaqus-cae/paged/2/#post-6470
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Thu, 13 Nov 2008 04:15:40 +0000I think it may have to do with the B-matrix, or node ordering. I have created shape functions in the standard order, so this should be correct.]]>Finite Element Modelingaas0092https://polymerfem.com/community/finite-element-modeling-aa/visualizing-user-defined-elements-in-abaqus-cae/paged/2/#post-6264
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Wed, 12 Nov 2008 20:54:59 +0000Finite Element ModelingJorgenhttps://polymerfem.com/community/finite-element-modeling-aa/visualizing-user-defined-elements-in-abaqus-cae/#post-6252overlay elements
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Mon, 10 Nov 2008 02:04:25 +0000Greetings I have managed to overlay the user element with a standard element, hence I can now visualize approximate deformation of user elements with more than just nodal displacements.I ran a single element uni-axial displacement test on the user element.(see image test05load.jpg) This was just a 100% displacement boundary condition on one of the faces of the cubic element. The opposite face is held fixed for all d.o.f.I have a problem with the results though. (see image 002fin.png)In this image, the X represents the initial node position, and the O, the deformed position. It appears that the deformation of the nodes in the lateral direction are incorrect. (Although, in the longitudinal direction, the result is fine) I think this may have to do with the node ordering convention, and shape function order. (I have stuck to standard convention, but have also tried different variations, with some change, but no correct solution.)I have attached images for the correct deformation on the standard element as well.Please advise on how I could fix this.Kind Regards]]>Finite Element Modelingaas0092https://polymerfem.com/community/finite-element-modeling-aa/visualizing-user-defined-elements-in-abaqus-cae/#post-6244
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Mon, 27 Oct 2008 21:53:46 +0000Finite Element ModelingJorgenhttps://polymerfem.com/community/finite-element-modeling-aa/visualizing-user-defined-elements-in-abaqus-cae/#post-6185Boundary conditions
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Mon, 27 Oct 2008 03:33:49 +0000Hi againMy current setup is a 1-element axial displacement test. I have modified the input file to apply the same boundary conditions on the overlaid element. This seems to have worked, and the overlaid element deforms with the user element.There are problems though:1. The stress values displayed are for the standard element, and not the UEL. (Although, I havent really defined stress in the UEL- I thought Abaqus would handle that part)2. I will be using many more elements soon, with my real mesh. Editing the input file like this, I assume, would be very tedious. Is there no other way of working with the input file?]]>Finite Element Modelingaas0092https://polymerfem.com/community/finite-element-modeling-aa/visualizing-user-defined-elements-in-abaqus-cae/#post-6183element deformation visualization
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Mon, 27 Oct 2008 01:41:10 +0000Hi I managed to overlay the UEL with standard element by adding it to the input file.The standard element does not deform, even though the nodes on the UEL do deform. I have tried changing the properties. (low stiffness for materials, but the overlaid element does not deform. Any suggestions on how to make it deform?RegardsDavinci (YK)]]>Finite Element Modelingaas0092https://polymerfem.com/community/finite-element-modeling-aa/visualizing-user-defined-elements-in-abaqus-cae/#post-6181
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Sun, 26 Oct 2008 22:23:53 +0000Finite Element ModelingJorgenhttps://polymerfem.com/community/finite-element-modeling-aa/visualizing-user-defined-elements-in-abaqus-cae/#post-6166