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Thank you very much, silvia. It seems that -time option doesn't work either. Maybe, there is still some kind of bug in this part.

Hello,

Is there something wrong with those commands? Why I got empty files?

(1) recorder EnvelopeElement -file ele0102forceenvelope.out -ele 1 2 globalForce

(2) recorder EnvelopeNode -file nodeall.out -node all -dof 1 2 3 disp

Thank you very much.

potato2006

Hello,

As for Ec (i.e., the initial stiffness), what should I use for confined and unconfined concrete?

Ec is the tangent modulus of elasticity of concrete, right?

Thank you.

Hi,

Can anybody tell me why the following commands returns nothing?

(1). recorder EnvelopeNode -file node5Evp.out -time -node 5 -dof 1 disp

(2). recorder EnvelopeElement -file ele1Evp.out -time -ele 1 globalForce

Thanks.

What is the meaning of damping tangent for elastic material?

sorry, not yet.

Anyone know the reference about this material model?

Hi, lish, thanks a lot!

Is there any way to change the support conditions (for example: to remove the rotational restraint of a node) for structure during transient analysis?

Hi, fmk,

I see. Thanks a lot for your reply.

Is there any way that we can output the system matrices (M, K, C) so that we can track the transient analysis process of the structural response?