Experimental study on mechanical properties of locally weakened shear panel damper
On both sides of the energy dissipation steel plate,the long strip and the arc transition between the upper and lower ends are locally weakened along the thickness direction,and the weakening bands are uniformly distributed along the width direction of the steel plate.It forms a locally weakened shear panel damper(LWSPD).Three different specimens are designed for quasi-static test.The hysteretic curve,skeleton curve,equivalent viscous damping coefficient,total accumulated energy consumption,strength degradation and stiffness degradation performance indexes of the damper are analyzed in detail.The numerical simulation analysis and parametric analysis are carried out with ABAQUS finite element software.The results show that the locally weakened shear panel damper has full hysteretic curve,stable energy dissipation performance and good follow-up bearing capacity.The thickness of the weakening strip has a greater influence on the energy dissipation performance of the damper than the weakening strip height.The energy dissipation capacity of the damper can be improved by appropriately increasing the ratio of the thickness of the energy dissipation steel plate to the thickness of the weakening strip.The numerical simulation results are in good agreement with the experimental results.
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