碰撞是一复杂的非线性问题,为了研究碰撞作用下结构的响应,合理的碰撞模型是非常必要的。针对隔震结构的碰撞现象,本文结合改进的Kelvin模型和Hertz-damp模型构造了一个新的阻尼函数,提出了改进的Hertz-damp碰撞模型,并对新碰撞模型的可靠性进行了数值验证。通过现有的碰撞试验和其他碰撞模型对比,表明改进后的Hertz-damp碰撞模型较其他碰撞模型具有较高的精度,能更精确地模拟结构的碰撞响应。
Abstract
Pounding is a complicated nonlinear problem. In order to investigate the structural responses under the impact of the collision, a reasonable collision model is very necessary. For the impact phenomenon of base-isolated structure, a new damping function is constructed by combining the modified Kelvin model and the Hertz-damp model. The modified Hertz-damp model is proposed, and the reliability of the new impact model is verified by numerical simulation. Comparing with other impact models through the existing pounding tests, it can be shown that the modified Hertz-damp model is more accurate than the other impact models, and can accurately simulate the pounding responses of the structure.
关键词
数值分析 /
Hertz-damp模型 /
结构碰撞 /
地震
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Key words
numerical analysis /
Hertz-damp model /
structural pounding /
earthquake
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