Seismic Response Simulation of Tubular Truss

Product name:	Seismic Response Simulation of Tubular Truss
Keywords:	Seismic Response Simulation of Tubular Truss
Industry:	Transportation - Rail transportation
Process:	Sheet metal - Welding
Material:	Carbon steel

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Numerical Simulation and Parameter Setting‌
A finite element model of a tubular truss is established using OpenSees. The El Centro wave (PGA=0.4g) is input to simulate seismic action. The load distribution is reflected by the MASS21 element concentrated mass method. The truss displacement, stress, and damage index (DM≤0.5) are analyzed.

Dynamic Response and Seismic Verification‌
The model shows that under intensity 9, the maximum displacement of the structure reaches 17.19cm, the peak stress is 5.71×10⁷N/m², and the damage index meets the repairable standard for moderate earthquakes (0.25<DM<0.5).

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