Dear Fmk,
Thank you to solve the problem quickly.
The openseesSP found a new problem with commend zeroLengthImpact3D. Once the model is used impact element ,the calculation will be failue.
For example, the following model can not run by SP correctly.
http://opensees.berkeley.edu/wiki/index ... F_3DOF.zip
Thank you for your help
zeroLengthImpact3D in SP
Moderator: selimgunay