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Hello Everyone, I found why there was a difference in results when cmpared to Abaqus. For Hex8, Abaqus does both Full Integration using 8 Gauss Points plus Reduced Integration using 1 Gauss point. The stiffness term is split into two parts - dilational and deviatoric (dont know the exact meaning).

Thanks Everyone for your answers. @rb1957, I need to do this displacement transfer for Fine Hex8 to Coarse Hex8. Will Linear Interpolation work fine ? @ThomasH, Actually I need to write a program in C++ to do this transfer from one mesh to another. Is there any algorithm available ?

Hello Experts, I need to transfer displacement results from fine mesh to coarse mesh. Also the vice-versa is also needed - coarse to fine. The transfer of results should be very much close to the actual simulation results. Thanks,

Thanks Doug and Whitwas for your suggestions. @whitwas, The row sum came to be zero. I will try your suggestions and update. Thanks a lot.

Hello Everyone, I am calculating stiffness matrix for a hexahedron element using C code and I am using gauss points. However if I compare my output with the stiffness matrix output by Abaqus, I see some differences ? Is it normal ? Also I am trying to transfer element nodal forces from one mesh...