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Why is roof crush analysis called a quasi static analysis .
2. What is the difference between dt noda and dt inter when do we use them
Thanking You in advance for the answers
Hi
The loading is deemed Quasi-static if it is long enough that the dynamic effect in the structure is reduced.
You can verify it comparing the internal energy and the kinetic energy. Small amount of kinetic energy means you have less inertia effect.
for 2. please refer to the documentation
https://2021.help.altair.com/2021/hwsolvers/rad/topics/solvers/rad/time_step_control_methods_r.htm
I hope this is helpful.
Regards
