FAQ 000088 ZH

计算 RF-FE-LTB FE-LTB

When I tried to pick the imperfections in FE-LTB, the message "Diagonal coefficient of matrix < 0"="" was=""> What have I done wrong?

回答

This message shown in FE-LTB means that your system is numerically unstable.

Often, such an instability in FE-LTB can be explained by inaccurate support conditions or release definitions.

The determination of the critical load factor provides the stability load of the analyzed structural system.

In the numerical calculation, this stability load is characterized by the fact that either the determinant of the stiffness matrix becomes zero, or that very high deformations occur for very small load increases in the calculation.

联系我们

联系 Dlubal

您找到想找的问题和解答了吗?
如果没有,请联系我们或者把您的问题通过网上表格递交给我们。

+49 9673 9203 0

(可要求接中文热线)

info@dlubal.com

RFEM 钢结构和铝合金结构
RF-FE-LTB 5.xx

附加模块

杆件弯扭屈曲有限元分析

RSTAB 钢结构和铝合金结构
FE-LTB 8.xx

附加模块

杆件弯扭屈曲有限元分析