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  • Users: seihin
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  1. seihin

    Non-linear displacement from temperature load

    Hi all, I have a simple model with one B23 element (unit length) cantilevered, with coeff. of expansion of 1.0. When a temperature load of -0.5 is applied (NLGEOM option turned on), I expect the final strain (E) to be -0.5 and the free end nodal displacement (U1) to be -0.5. ABAQUS gives me...
  2. seihin

    Postbuckling analysis by RIKS not converging

    After knowing my structure is going to buckle at a certain point using linear buckling analysis, I proceed to find the postbuckling behaviour. No matter what I do, the analysis fails to continue after the buckling point. I have tried RIKS, STABILIZE, dampers and even increasing the tolerances by...
  3. seihin

    axial and flexural energies

    Hi all, I am modelling the nonlinear behaviour of a truss structure by temperature load. I wish to know if there is a way to get abaqus to output the axial and/or flexural energies separately. Currently I can only get elastic/total..etc energies in my output. My work requries me to find out what...
  4. seihin

    "tangent" stiffness matrix

    Hello friends, I am running a static, nonlinear geometry analysis of a 2D grid structure. The grid (kagome grid, made up of equilateral triangles) has about 36000 members each with five nodes, making the analysis very big. What I am trying to find out is the behaviour of the structure when I...

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