wrong 4.1.11_structural user element in verification manual?
wrong 4.1.11_structural user element in verification manual?
(OP)
Hi,
Currently I am reading the example (4.1.11_structural use element)in verification manual. In uellinea.inp, the stiffness matrix in *MATRIX, TYPE=STIFFNESS are given, but there are many zero terms. Is it right?
Thanks,
mapi
Currently I am reading the example (4.1.11_structural use element)in verification manual. In uellinea.inp, the stiffness matrix in *MATRIX, TYPE=STIFFNESS are given, but there are many zero terms. Is it right?
Thanks,
mapi





RE: wrong 4.1.11_structural user element in verification manual?
RE: wrong 4.1.11_structural user element in verification manual?
In this example, the nodes are number from left to right as 1,2,3,4,5,6. But the stiffness shows that A22=A33=A55=A66=0 and others such as A12=A21=A23=A32=...=A65=0. I thinks there terms should not be zero.
Thanks.
RE: wrong 4.1.11_structural user element in verification manual?
RE: wrong 4.1.11_structural user element in verification manual?
I write the syntax here so other might find it also if they search.
(from the file uellinea.inp under 4.1.11 in verification manual)
*USER ELEMENT,NODES=2,TYPE=U1001,LINEAR,UNSYMM
1,2,3
*MATRIX,TYPE=STIFFNESS
1.05E9, 0. , 0. ,-1.05E9
0. , 0.
**
0. , 0. , 0. , 0.
0. , 0.
**
0. , , 0.0 , 0.
0. , 0.
**
-1.05E9, 0. , 0. , 1.05E9
0. , 0.
**
0. , 0. , 0. , 0.
0. , 0.
**
0. , 0. , 0. , 0.
0. , 0.0