Hi all

I'm finding several example problems of UMAT. 

In the abaqus manual (http://130.149.89.49:2080/v6.14/books/ver/default.htm?startat=ch04s01abv296.html#ver-sub-umatuhyper), there are several example fortran files for UMAT like J2 plasticity and viscoelasticity.

I'm wondering that these examples are corresponding to the materials' laws of ABAQUS built-in material's laws.

If I simulate the problems using the materials' law based on the ABAQUS GUI, are the results same with the simulations by the UMAT files?

Thanks for your reply in advance.  

Abaqus ​​​​​​​