【摘要】 将回传矩阵法引入到MTMD结构系统的瞬态响应分析中,采用经典轴向杆理论和Timoshenko梁理论考虑主体结构构件的轴向和弯曲运动,推导了具有MTMD的平面框架结构系统的回传矩阵列式,研究了结构附加MTMD后瞬态响应的变化及MTMD设计参数对减振效果的影响。计算分析表明,在结构上附加MTMD可以减小结构在承受突加荷载时的瞬态响应,达到振动控制的目的,但取用不同的MTMD设计参数对减振效果有较大的影响。算例同时表明回传矩阵法在求解附加MTMD结构系统的瞬态响应时具有计算精度高、求解代价小等优点。更多还原

【Abstract】 An extension of the reverberation matrix method is made to transient analysis of structures with MTMD.The dynamic joint coupling model of a continuous structural member is proposed for this type of structures.Formulations of the reverberation matrix method for planar framed structures with MTMD are derived.With them the transient response and influence of MTMD are investigated.Numerical example results indicate that MTMD can reduce the transient response effectively,and different parameters of MTMD have different effects on the reduction of the structural transient response.The advantages of high accuracy and less computational cost of the reverberation matrix method in the transient response analysis are also shown.更多还原