黏弹性阻尼器的剪-扭耦合性能足尺试验研究

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中图分类号：TU352.1 文献标志码：A DOI： 10.15935/j.cnki.jggcs.202503.0017

AbstractIn theory，viscoelastic dampers （VEDs） disspate energy through shear deformation of viscoelastic materials，while in practical engineering，VEDs are usuall in complex stress states under shear force，axial force，bending moment，and their combinations.So，the actual stress state of VEDs is more complex than the theoretical stress state，which has a significant impact on the stiffness and energy dissipation of the structure. Based on this，the deformation of VEDs under complex stress states is decomposed into translational shear deformation and rotational shear deformation，and a shear-torsion coupled mechanical model is proposed. Through full-scale performance tests，the unique mechanical parameters of VEDs under shear-torsion coupled are studied.The test results show that the shear-torsion coupled test results match well with numerical analysis and mechanical models，and the test results verify the shear-torsion coupled mechanical model.Furthermore， the diffrences between the experimental and theoretical values of the proposed torque corrction coefficient are less than 5% ，indicating that the experimental and theoretical values of the torque correction coeficient arebasically consistent.In the deformation and frequency correlation tests，the relatively constant relationship between shear and torsional deformation in the test is verified.

Keywordsviscoelastic damper， complex stress state， shear-torsion coupled performance，ful-scale test

0 引言

黏弹性阻尼器（VED）的工作原理是交错钢板的相对运动引起黏弹性材料发生剪切或拉压变形来耗散能量[14]。（剩余11037字）