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  1. MatthieuM

    Several surface-to-surface contact interaction or only one ?

    Ok, thank you for your response
  2. MatthieuM

    Several surface-to-surface contact interaction or only one ?

    I thought, because of my problem's size, that surface-to-surface with smaller contact pairs could decrease the calculation time ?
  3. MatthieuM

    Several surface-to-surface contact interaction or only one ?

    Hello, I have to model a 3D metallic structure in which several (around 30) slave surfaces are in contact with several master surfaces (around 30 too). I use "hard contact" for normal behaviour and "penalty" for tangential behaviour. Each slave surface is composed of approximately 10 000 3D...
  4. MatthieuM

    Variation of the initial matrix during fminsearch computing

    Hello, I'm using the "fminsearch" function on Scilab. My function "f" to minimize depends of two parameters, say "p1" and "p2" My problem is that the variation of "p1" and "p2" during the fminsearch is very low. For example, if p1=10 and p2=50, the first try of fminsearch will be p1'=10.5 and...
  5. MatthieuM

    incompatibility between elements

    Thanks for the answer, I know that linear tetrahedron are really too stiff, however with quadratics like C3D10M I get good results (but the computing time is high). Besides, i read that for plasticity and contact, the modified tetrahedral (and triangular) elements are better to avoid shear and...
  6. MatthieuM

    incompatibility between elements

    Hello, I'm using the "coupled temperature-displacement" procedure for creep with two kinds of elements : -C3D10MT -C3D4T (where the Von Mises stress is low) to reduce the computing time. My problem is that Abaqus gives me this error message :"the selected geometry order will introduce an...
  7. MatthieuM

    Axial pressure in Generalized Plane Strain

    Hello everyone, I try to model in 2D a part under isostatic pressure which means I need to put a pressure in the direction 3 too. However with Generalized plane strain elements it is only possible to put a concentrated load on the reference point. Does someone know how i could enforce an axial...

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