Modelling of rubber bumper installed between expansion joints

[jumana]

Hello,
I am working on pounding mitigation between adjacent bridges. I need to implement a rubber bumper between two girders using a multilinear strain hardening model. Is there any way to do it using link elements?
any input regarding this?

[seismosoft]

In SeismoStruct there are 30 hysteretic curves that can be used with the nonlinear link element (NLlink). Please refer to the manual or the help of the program for the specific details and input parameters on each curve. Specifically for your needs (multilinear model with strain hardening), you can refer to one of the following curves:
Bilinear symmetric curve - bl_sym
Bilinear asymmetric curve - bl_asm
Bilinear kinematic hardening curve - bl_kin
Trilinear symmetric curve - trl_sym
Trilinear asymmetric curve - trl_asm
Quadrilinear symmetric curve - quad_sym
Quadrilinear asymmetric curve - quad_asm
Pinched asymmetric curve - pinched_asm
Modified Ibarra-Medina-Krawinkler Deterioration curve with Bilinear Hysteretic Response – MIMK_bilin
Modified Ibarra-Medina-Krawinkler Deterioration Model with Peak-Oriented Hysteretic Response – MIMK_peak
Modified Ibarra-Medina-Krawinkler Deterioration Model with Pinched Hysteretic Response – MIMK_Pinched
Nonlinear elastic curve - nlin_el
Plastic curve - plst
Simplified bilinear Takeda curve - Takeda
Asymmetric bilinear Takeda curve - Takeda_asm
Multi-linear curve - multi_lin
Generic Hysteretic Curve – gen_hyst

Alternatively you could simply employ the curves that model impact:
Gap-hook curve - gap_hk
Impact response curve – pound_hz

Seismosoft Support