get element num/id in the user element subroutine

[ace21]

Dear Feap community

I wanted to know is it possible to get the element number/id in feap user element routine. I want to use the element id to retrieve its material properties ( the element id will then be argument for an array defined as common block containing material properties  e.g  property(number of elements)  ) b/c in my problem the material properties are different for every element ( heterogeneous case)

Or there is some other way to do this task

I am using feap version 8.2

thanks

[K.Li]

I assume your material subroutine is called at every Gauss point. The  current element number is defined as integer n and it is saved in eldata.h.

So if you include eldata.h in your subroutine, n will be the current element.

[Prof. R.L. Taylor]

An alternative to you managing the storage for the material properties is to let feap use "history variables" to store your parameters.  See the programer manual on use.  Use the "nh3" storage as it does not change with time increments.  Allocate what you need under isw = 1 and set the values when isw = 14.  Then you can extract for all the other isw values.  Feap will set the values for each element individually in the array hr(nh3+0:numnh3) which is passed with the include 'hdata.h'

[ace21]

Thanks K.Li and Prof Taylor for the useful suggestions