online UPF Guide, but a 5.5 version, however the only one I could find in internet.
I think ifc, the fortran compiler is enough, why c/c++ one also necessary?
Mistake above:
~restart is wrong,
the right command should be:
~reset
after using this ~reset command, message reads:
~RESET was processed: The external command buffers have been cleared.
I used to use USRCAL, and it worked at least once. I've no idea why it now doesn't work anymore, since I...
Oh, I forgot to say: I do meshing with my own element, i.e, The input file for meshing is always the same. I modify the element quite often in order to get some valuable results to compare.
@feadude,
You are right, I deleted the calculating displacement transformation part in the program, there are 2 fixed nodes, but the others should have transformations on them.
I want to simplify the programm to the possiblly least.
@johnhors
I always have the right mesh, I just do some changes...
on UNIX Systems
I can compile the UPFs successfully, but I have problem in Activating UPFs.
each time after compiling I have to restart ANSYS, before I apply my customized user element.
I have tried by
Issuing the USRCAL command as UPF Guide says, and
~restart
Well,this command is not...
Could anyone be so kind to give a newbie, me, a short or detailed explaination of Active DOF? what is it? And how to use?
My problem: when I am using ANSYS to solve my problem, in the SOLU procedure, there is a warning said :
There are no active degrees of freedom.
SPARSE MATRIX DIRECT...
My 1st step:
a)modify uel101.F and test with testcases.
b)modify the uec101.F and uel101.F to be LINK1 element, so as to get some feeling.
2nd step:
try to write a similar element to my target element, for instance, a 4-node linear or quadraliteral element for 2D linear isotropic...
Since nobody replied. I'm going to give my steps. Maybe wrong, but I am trying. and will tell my results later. Cuz i myself don't know the results yet. and i believe many people have such experiences.
I want to creat a 4-node user element for 2D isotropic inhomogeneous material, the most important part is the stiffness matrix I need to offer. And later I want to extend it into 8-node element(like PLANE82, triangular option should also be available).
Any help or information will be greatly...
