Non linear transient analysis

ketanpa

Hello,

I am trying to perform nonlinear transient analysis of a plate. But I am getting the following error.

 

 *** ERROR # 4937 ***
 Nonlinear direct transient subcase 1 requires activation of LGDISP.

 

Could I know in which situations do we have to include LGDISP card?

 

Thanks in advance.

Rahul Rajan_21763

Large Displacement (LGDISP) enables the recalculation of stiffness matrix to account for geometric nonlinearities. LGDISP can be applied globally or to a specific load case.

 

Could you please share the .out file of the run?

ketanpa

 

Unable to find an attachment - read this blog

Rahul Rajan_21763

Nonlinear Direct Transient Analysis: This solution sequence performs Large Displacement Nonlinear DirectTransient Analysis. 
To activate large displacement use PARAM ,LGDISP, 1

The predominant difference between NonlinearQuasi-static Analysis and Nonlinear TransientAnalysis is the inclusion of Inertia and Momentumterms in the solution of the Energy equation. 

ketanpa

Thanks a lot for your help.