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Recent content by ABD01

  1. ABD01

    Extract stress intensity factor from J-Integral in non linear geometric analsyis

    Mustaine3 Thanks for your comment I thought there is a way to compare the linear & non-linear K-factor. However, you still can see the concept of nonlinear SIF is used with non-linear material Link
  2. ABD01

    Extract stress intensity factor from J-Integral in non linear geometric analsyis

    Hi Setting the geometric non-linearity option on, the calculated SIFs are not accurate (Abaqus warning)as agreed they are specifically valid for a linear elastic material. In such an analysis case when the geometric noo-linearity is considered (elastic material, so far) the J integral can be...
  3. ABD01

    Abaqus warning-Geometric non linearity for solutions of crack problems

    Mustaine3 Provided that we calculated the J-integral from the nonlinear geometric analysis. can we derive the SIFs from the J-integral in Abaqus, please? It seems that the deviation for linear cases available, in such cases NLGEOM is it same derivation of SIF from J integral? Thanks
  4. ABD01

    Abaqus warning-Geometric non linearity for solutions of crack problems

    so what's common to use in case of NLGEOM instead of K1? Is J-Int still valid in this case? If I want to compare 2-cases with/and without NLGEOM which fracture parameter could be adopted from FE results? Thanks
  5. ABD01

    Checking the material orientation

    Hi Is there a way to check the material orientation after assigning it to the material and before having the output. Also, if I reassign the orientation of the material over an already defined orientation is the last action considered. I found out that we can check the assigned orientation...
  6. ABD01

    Abaqus warning-Geometric non linearity for solutions of crack problems

    Hi Is there any points to consider while conducting geometric non-linearity in cracked plates when the aim is SIF calculations. Abaqus issued the following warning which raised my concerns K factors output has been requested in a large deformation (*step, nlgeom) analysis. The results might...
  7. ABD01

    Engineering properties of composite material CFRP

    Hi I am looking for the Engineering properties (E1, E2, E3,,,G12, G13, G23,) of CFRP Laminates of E1 around (+/- 10%) 200GPa. You may suggest a Material database website or Mat library built-in software or from your experiences, if you run into a paper used such material. thickness=1.4mm...
  8. ABD01

    matching/copying mesh of attached solid parts

    Hi, In an assembly of two attached solid plates, how to match the mesh of from one component to the other components attached to. Component -1 3D solid plates with thickness t1 - It is partitioned for meshing purpose Component -1 3D solid plates with thickness t2 - I need there mesh to...
  9. ABD01

    What's wrong with Abaqus.inaccurate results without errors/warnings (seam crack)

    So I have been with this problem for more than a week now. There is a big issue with Abaqus (I know this is a big allegation to be made by a learning user) See the attached first (2 Figures), please You can see that there is an element that one of his nodes are separated from the adjacent...
  10. ABD01

    Reading & comparing Input files

    Hi I am calculating the stress intensity factor for cracked models. General procedure for modeling crack using Abaqus example with photo here Link In My model, The program runs correctly for one case (crack length =x). for other cases when the crack length increased, I got unexpected &...
  11. ABD01

    merge meshed parts with a crack in Abaqus

    rb1957 Thank you for your comment Yes, matching the mesh/seeds on the edges is essential, but the trouble comes as I want to assign seam crack later to the merged mesh (dependent parts/mesh). The seam crack could be assigned only to independent assembled parts. Therefore this procedure did not...
  12. ABD01

    sweep mesh in circular partition around crack tip- Abaqus

    rb1957 Thanks for your comments Yes, I wanted the mesh to sweep through thickness. otherwise you got a triangle elements which are prohibited (Error) in the contour region. The issue solved by creating another partition (yellow lines in the attache) around the core (cylindrical partition) around...
  13. ABD01

    The Seam crack open partially!:modelling issue

    Hi As you can see in the attache that the seam crack opened partially. just the part near crack tip. This part is partitioned circle merged in an assembly of same material. You can see that the element separated at the line of partition. There is no error. warning some far element distorted...
  14. ABD01

    sweep mesh in circular partition around crack tip- Abaqus

    Hi Wish you all happy new year! I am new here, I hope you can help me with my question: see the attachment, please The partition around the crack tip is circular divided in 4 quarters. I want to sweep the mesh through the depth and keep it as it is in the circumference direction. this part is...
  15. ABD01

    merge meshed parts with a crack in Abaqus

    Hi I am in a situation I found it's better to mesh parts and then merge them. the parts are one block around the crack tip partitioned for mesh facilitation, and the whole plate and the crack. So the procedure was: mesh parts, merge (geometry&parts) and the results were as wanted. But when I...
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