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作 者:邹妮娴
机构地区:[1]烟台汽车工程职业学院机电工程系,烟台265500
出 处:《机械强度》2015年第6期1030-1034,共5页Journal of Mechanical Strength
基 金:山东省自然科学基金(ZR2010AM002);山东省科技攻关项目(2012G0030011)资助~~
摘 要:地面传感器是基于地面响应而工作的,地面位移和加速度是震源波动在近地地壳中传播的结果,综合考虑入射波扰动和振动系统的地震响应机制是一个必须解决而又复杂的动力学问题。利用波函数展开法、平面波展开式和牛顿动力学方程研究了反平面入射波扰动下地面振动系统的地震响应相对位移随着入射波入射角及其扰动频率的变化规律,算例结果表明了共振响应现象的存在,且与振动力学的结论吻合。The ground seismic sensors is working basing on the dynamic response of the ground,the ground displacement and acceleration are the results of the propagation of the seismic focus in the crust,it is a complex dynamic problem of comprehensive consideration of the incident wave disturbance and the seismic response of the oscillatory system mechanism which needs to be solved. In this paper,the method of wave function series,the plane wave expansion and Newtonian dynamics equation were used to study the seismic response of the oscillatory system under the disturbance of the out-of-plane incident wave,and the variations of the relative displacement of the mass to the ground along with the disturbance frequency,incident angle are investigated,the numerical results of the given example show that the existence of the phenomenon of sympathy,and accord with the conclusion of vibration mechanics.
关 键 词:半空间 地面振动系统 波函数展开法 振子响应位移 应力集中系数
分 类 号:O23[理学—运筹学与控制论]
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