摘要
应用振型叠加法对具有库仑摩擦力的结构进行动力分析 ,用假想力矢量表示因摩擦力引起的非线性 ,用有限元求解运动方程。在地震期间 ,地面上的结构可能滑移 ,相应的位移包括弹性位移和刚体运动 2部分 ,考虑刚体运动需要进行高模态的瞬态分析。算例分析了地震期间地面上平板的动力响应。
A modal superposition method for the dynamic analysis of a structure with coulomb friction is presented. The finite element method is used to derive the equation of motion, and the nonlinearities due to friction are represented by a pseudo-force vector. A structure standing freely on the ground may slide during a seismic event. The relative displacement response may be divided into two parts: elastic deformation and rigid body motion. The presence of rigid body motion necessitates the inclusion of the higher modes in the transient analysis. In a problem, the dynamic response of a platform standing freely on the ground is analyzed during a seismic event.
出处
《武汉理工大学学报》
CAS
CSCD
2003年第3期48-51,共4页
Journal of Wuhan University of Technology
基金
军队国防科研攻关项目 (W5 0 2 )
关键词
振型叠加法
库仑摩擦力
动力分析
核电站
modal superposition method
coulomb friction
dynamic analysis
nuclear power station
