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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, 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...
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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 ?
  11. VaidehiChennubhotla

    Minitab

    Hi Engineering tips, I am very new to Minitab. I have run a response surface design using C1 to C3 columns as input and C4to C6 columns as output. After running the response optimizer I have got few values for C1, C2,C3. But it doesnt meet my requirement. So I have added few more data in the...
  12. VaidehiChennubhotla

    Hyperfoam material model - Compression Test

    Hi, A Hyperfoam material model was used for compression test on a 50x50x50 mm block. The compression test data (FS curve) was overlaid on the CAE data. It doesnt correlate in the initial portion as shown in below picture. Hyperfoam material in general has uniaxial test data(compression and...
  13. VaidehiChennubhotla

    Hyperelastic material

    Hi, A Hyperelastic material model was used for compression test on a 50x50x50 mm block. The compression test data (FS curve) was overlaid on the CAE data. It fails to replicate the test data behavior miserably, shown in below picture. Hyperelastic material in general has uniaxial test data...
  14. VaidehiChennubhotla

    Crushable foam

    Hi, A Crushable foam material model was used for compression test on a 50x50x50 mm block. The compression test data (FS curve) was overlaid on the CAE data. The test data seems a little softer as it we go down the curve, compared to what I am getting in the analysis. I have played around with...

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