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A dynamic analysis on concrete frame structure under different strain rate is performed, in the OpenSees program, how to achieve a loading method considering the influence of strain rate. For example, to simulate the dynamic responses under the strain rates of 0.0001, 0.001, 0.004 and 0.01 1/sec, re...

Hello, everyone.
An experimental material model is put forward. Then, I want to put the new material model in the OpenSees software frame material library. Now I don't know how to add material code. Please give me a hand, and help me to recommend some of relevant references.
Many thanks to you!

Dear vesna, than you very much, could you help me review my code? it is very big, and exceeds the maximum word limit,so i can't post it. please give your email, and i will sent it to you. my email: c.q.wang@foxmail.com

In the numerical modelling of 3 dimension space concrete frame, the Concrete02 and Steel02 material model are adopted for concrete and steel bar, respectively. The FBE and fiber section model is used in the numerical model. The obtained base shear-roof displacement relation curve has obvious descend...

Thanks,
Is it recommendable to simulate the block masonry house with shell elements?

Dear vesna, Can the brick elements and the NDmaterials consider the nonlinear behavior of the masonry house structure well? I have completed the shaking table tests of a full scale two-storey block masonry house. I wonder whether the OpenSees can realize the numerical simulation of the masonry house...

To simulate the nonlinear seimic response of the block masonry structure,
what elements and material model should be adopted in the numerical model?
Where I can find relative example?
Can you help me?
Thanks

The residual deformation may occur after shaking table tests.
In order to match the experimental tests well,
how to consider the residual deformation in the OpenSees?

Dear vesna: The modified Kent-Park model cannot consider strength degradation in the Ref. [1], the following sentences quoted from the Ref.[1]: “The concrete damage considered in the present model is in the form of unloading and reloading stiffness degradation for increasing values of maximum strain...

Thank you very much, I will try according to your suggrestions.

In order to determine the time at which the plastic hinges occurred and the order that appear during the seismic waves inputting, what elements should be adopted in the analysis, FBE, DBE, BWH or others? How to realize that specifically? Can some examples or relative literatures be shared? Thank you

The same frame structure is subjected to two consecutive excitations of the same seismic wave and the lateral stiffness of the structure degraded. But it is found that the displacement response under the second excitation is smaller than the first. In my opinion, the displacement response should inc...

Thank you for your reply.
Is it accurate for the results, DBE is adopted instead of FBE assuming convergent to use DBE and not convergent to use FBE.
Thank you

In the OpenSees analysis, the concrete02 model and the hysteretic material model are used as the material model of the concrete and steel bar, respectively.
I wonder whether the stiffness degradation and strength degradation can be considered in the calculation.
Thank you

Dear vesna,
Thank you for your reply.
Is it accurate for the results, DBE is adopted instead of FBE assuming convergent to use DBE and not convergent to use FBE.
Thank you