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  1. VaidehiChennubhotla

    How to offset a shell mesh which is irregular in shape ?

    Hi, I am working on a composite layered structure with a shell layer-solid layer-Shell layer sandwich structure. How to offset the shell layers on both sides by 0.25mm without having to re-create shell offset layer and rebuild the boundary conditions, surfaces, nodes on that shell layers ? The...
  2. VaidehiChennubhotla

    Error element normal material orientation

    Hi , I am getting the following error in the .msg file. How to overcome this ? ***ERROR: The user defined normal of the material orientation of 46000 elements, as defined in *ORIENTATION, is orthogonal to the GASKET, COHESIVE, SHELL or MEMBRANE normal direction. Check...
  3. VaidehiChennubhotla

    Multiple load cases in different steps

    Hi FEA way, The 4 static linear perturbations doesn't seem to allow me to deactivate the contact pairs in successive load cases. And it is showing as built into base state both in interaction module and step module. Will the load cases give results independent of previous load case ?
  4. VaidehiChennubhotla

    Multiple load cases in different steps

    Thank you guys for the quick reply. Hi Mustaine, I have different load plates. So the contact pairs also should be changed. The linear perturbation seems to allow choosing only the load and boundary conditions but not the contacts. Is there any way to apply selected contact pairs even within...
  5. VaidehiChennubhotla

    Multiple load cases in different steps

    Hi, I have 4 load cases which I want to run in 4 steps in the same model of abaqus. While activating and deactivating necessary loads, contact pairs and boundary conditions. I am running a static linear analysis. Should I have the 4 load cases in 4 consecutive steps or have unloading steps in...
  6. VaidehiChennubhotla

    How to remove free edges in Abaqus ?

    I have a CAD model which was imported into Abaqus Software. I am using appropriate partitioning strategies to convert orange part(unmeshable) into meshable part(Yellow for solid, pink for shell). I am observing some free edges which as I understand are preventing the region to convert from...
  7. VaidehiChennubhotla

    What should be section thickness when there is nodal equivalence between shell and Solid parts ?

    Hi FEA way, Shell section assignment using thickness From section option and mid surface is having convergence issues. I have not used variable shell thickness. Contact pairs are giving convergence errors so I used general contact.
  8. VaidehiChennubhotla

    What should be section thickness when there is nodal equivalence between shell and Solid parts ?

    Hi FEA way, Using tie the nodes which are tied are like attached and rest of the element is becoming wavy. I didnt use variable shell thickness based on nodal distribution.
  9. VaidehiChennubhotla

    What should be section thickness when there is nodal equivalence between shell and Solid parts ?

    Hi FEA way, I used merge instances to merge the shell and solid part into one single part. Then in the part module, I merged the nodes at the interface of the shell and the solid. I don't have access to Hypermesh but I think Hypermesh nodal equivalence helps to have nodal equivalence between...
  10. VaidehiChennubhotla

    What should be section thickness when there is nodal equivalence between shell and Solid parts ?

    I have a shell structure and solid structure with merged nodes (Nodal equivalence) in Abaqus. The thickness of the shell structure is 1.5 mm . What should be the section thickness that I should assign in *section ?Generally we select the mid-surface for assigning the section thickness. I dont...
  11. VaidehiChennubhotla

    Effect of control cards on the FS curve

    Hi FEA way, I reduced the stabilize value from 0.0008 to 0.0003 below that it is not converging. The model doesn't converge when i tried any random stabilize value from 0.0002 to 0.000001 The model I am running is a static compression test so stabilize shouldn't have any effect ? But I have...
  12. VaidehiChennubhotla

    Effect of control cards on the FS curve

    Hi, I have a dual layered structure. When a general ILD(Indentation force deflection) test is done on the part, a smooth FS curve is expected as per test data. But inorder to achive convergence, I have used control cards. Does that affect the FS curve? *Step, name=Step-1, nlgeom=YES...
  13. VaidehiChennubhotla

    Can Step file be imported into Abaqus as Analytical rigid body ?

    I imported a step file into Abaqus software. By default it is 3D deformable part. So when I try to change from deformable to Analytical rigid, it doesnt allow. I have converted it into analytical rigid in part module. But even then it is not allowing me to chnage from 3D deformable to Analytical...
  14. VaidehiChennubhotla

    Error in defining or computing beam section normal in 12 elements.

    Hi FEA way, Thanks for the quick reply. I read the manual and checked the 'show normals' option. t is beam element tangent vector n1, n2 are beam section axes. In the property module, I have identified the 12 elements by showing the element labels and the beam orientation from...
  15. VaidehiChennubhotla

    Error in defining or computing beam section normal in 12 elements.

    Does anyone know how to remove this error ? The model consists of wireframe(B31 elements) resting on brackets(S4R elements). I don't know what this error means. Can anyone help ? Error in defining or computing beam section normal in 12 elements. The elements have been identified in element...
  16. VaidehiChennubhotla

    How to create a beam MPC or attachment lines between a wire and shell structure in abaqus ?

    Hi , Found a plug in abaqus. Will try and see. https://kb.dsxclient.3ds.com/mashup-ui/page/resultqa?id=QA00000008241e
  17. VaidehiChennubhotla

    How to create a beam MPC or attachment lines between a wire and shell structure in abaqus ?

    Hi Mustaine3 and FEA way, Thanks for the quick reply. I had selected all 1300 nodes one by one and created Beam MPC carefully between 2 nodes. But at the very end my model got crashed and couldnt save the work. Could you please share the python script ? It will be really helpful. Thanks, Vaidehi
  18. VaidehiChennubhotla

    How to create a beam MPC or attachment lines between a wire and shell structure in abaqus ?

    Hi, I have a wireframe of B31 elements and a S4R shell structure. I am trying to connect the node to node (1-1) either as a coupling or a beam MPC or attachment line. How to achieve this ? I tried the create attachment by projecting points option in Interaction module. Is this the Beam MPC...
  19. VaidehiChennubhotla

    How to create a wire in between 2 wires in abaqus part module

    Is it not possible to translate the wire by the radius of the pipe ?
  20. VaidehiChennubhotla

    How to create a wire in between 2 wires in abaqus part module

    Hi, I am trying to idealize pipe as wire in abaqus. I used create wire from edge option. But it creates 2 wires. How to create a singe wire in between 2 wires in abaqus part module ?

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