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  • Users: R.Guo
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  1. R.Guo

    , and why second order full integration is suitable to get this result. Besides, what

    How to calculate stress concentration in FEM, and why second order full integration is suitable to get this result. Besides, what the different for load-loading vs displacement-loading to calculate the stress concentration?
  2. R.Guo

    A question about rigid body in contact simulation?

    What kind of rigid body should be used as end points in three point bending, discrete rigid body or analytical rigid body. What the difference for these two?
  3. R.Guo

    Question about displacement and load control in a simulation?

    What the difference between displacement and load control to solve the answer in a simulation? For example, is there different for initial strain increment when use displacement control or load control?
  4. R.Guo

    How to Periodic Boundary Conditions in FEM

    I have some questions about periodic boundary(PBC) condition that is used in FEM. 1. How to add PBC condition in the model? this is a model named PBC to add shear condition. The case for up and down boundary as figures, named UP and DWON. we know the formula about PBC is . But how to...
  5. R.Guo

    the question about transverse shear stress for layered and stacked elements.

    Thanks. Dear friends
  6. R.Guo

    the question about transverse shear stress for layered and stacked elements.

    How to get the stress of 13 direction for the D point by simulation S8R elements? Besides, I don't know the reason that we cannot get stress of 13 direction of this D point by simulating stacked SC8R elements.
  7. R.Guo

    some problems about composite plates subjected to three point bending

    Hello, everyone, I did a simulation about composite plates including intralaminar and interlaminar subjected to three point bending. But the curve of load vs displacement is pretty error. I don't know how to analyze. About my mode: composite layup are made of continue shell and the...
  8. R.Guo

    seek help about document

    Hello, everyone, I am using abaqus, and two questions I have need your help. One is that I cannot search in document. I don't know the reason when I search on the box, the only result is 'User Assistance Full-Text Search'. Another is I have strongly thought to use python and fortran...
  9. R.Guo

    how to choose relevant version to link fortran and abaqus 2017

    Dear friends: I want to link fortran and abaqus2017. But I have a question is that how to choose a suitable version of visual studio and Intel Visual Fortran for any version of abaqus, including abaqus 2017. Sincerely, thanks.
  10. R.Guo

    the errors shown is no power

    Hello, everyone, I have made a sandwich composite under three point bending. The model is a 2D model. The interface between skin and core is adopted by cohesive element, and the skin and core meshed by solid elements. But there is a error which is show that the power is not specified or the...
  11. R.Guo

    the numerical results have large different with that of experiment.

    Dear friends, @Mustaine3 @DRM89 and , thanks for your help. Now, I have a new simulation by introducing cohesive element in a 2D model, which the skin and core meshed by solid elements. But there is a new error which is show that the power is not specified or the specied value is equal to or...
  12. R.Guo

    the numerical results have large different with that of experiment.

    Thank you for your help. I think the reason may interface between core and skin is not induced, besides, another wrong maybe the element type which I choose shell, but it's a bend. But I want to know the reason that the curve of load vs deflection is straight in abaqus, although I open...
  13. R.Guo

    the force is alway equal to zero for any nodes

    Sincerely thank you.
  14. R.Guo

    the numerical results have large different with that of experiment.

    Thank you for your remind, but I still cannot find question. These are displacement contours as followings, and hope you can get some more information. In Addition, the boundary condition seem is right, which is the two supports subject to U1=U2=U3=UR1=UR2=UR3=0, and loading head only subjected...
  15. R.Guo

    the numerical results have large different with that of experiment.

    There are two questions about the curve of load and displacement and one question about deformation result for FEM , 1. the load obtained by displacement controlled in abaqus is larger than experimental result, although the material elastic property is same as description in the literature, of...
  16. R.Guo

    non convergence for nonlinear analysis

    Sincerely thank you @Mustaine3 for your kind help.
  17. R.Guo

    non convergence for nonlinear analysis

    Hello everyone, I have simulated nonlinear characteristics of sandwich composite subjected to three points bending. But I have theses two questions. 1) how to solve this problem that is numerical singularities at one node. Besides, this warming seem on effect other iterations, how come? 2) how...
  18. R.Guo

    the force is alway equal to zero for any nodes

    Thank you for your answer. I simulated three point bending. Therefore, I applied a displacement/constraint at the reference point of the discrete rigid part not at node of the deformable part. Along with the deformation, there is no force value at any point of the deformable part. However, there...
  19. R.Guo

    the force is alway equal to zero for any nodes

    I don't know the reason that the force is equal to zero for any node. Of course, the job is success, and we can get displacement for any node.

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