含滞迟缓冲器的螺栓法兰连接结构稳态随机响应  

STATIONARY RANDOM RESPONSE OF A BOLTED FLANGE CONNECTION STRUCTURE WITH HYSTERETIC BUFFER

作　　者：姜运哲 曾岩[1] 赵振军 李刚[1] 关振群[1] 周锦航 罗超[1] Jiang Yunzhe Zeng Yan Zhao Zhenjun Li Gang Guan Zhenqun Zhou Jinhang Luo Chao(State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, International Research Center for Computational Mechanics, Dalian University of Technology, Dalian 116023, China Belling Institute of Astronautical Systems Engineering, Beijing 100076, China)

机构地区：[1]工业装备结构分析国家重点实验室,大连理工大学工程力学系,国际计算力学研究中心,大连116024 [2]北京宇航系统工程研究所,北京100076

出　　处：《动力学与控制学报》2017年第3期236-241,共6页Journal of Dynamics and Control

基　　金：国家重点基础研究发展计划(2014CB046506);国家自然科学基金资助项目(11302035、11372061、11672052、11272074);中央高校基本科研业务费专项资金资助~~

摘　　要：基于螺栓法兰连接结构简化动力学模型,针对上部结构内包含滞迟缓冲机构的情况,通过蒙特卡洛数值模拟研究了高斯白噪声纵向载荷作用下的结构随机响应特性.在简化动力学模型中,通过拉压不同刚度的非线性弹簧表征螺栓法兰连接,上部缓冲机构用Yar-Hammond双线性滞迟系统描述,以便用于航天器对应舱段结构动力学响应的快速计算.在数值模拟之前对此系统进行了无量纲化,而后通过数值模拟分析了不同参数条件下的稳态响应概率密度函数,讨论了结构稳态随机响应的演化规律.Based on the simplified dynamic model of a bolted flange connection structure with hysteretic buffer, stationary random response of the structure under the longitudinal load of Gaussian white noise is studied through Monte Carlo simulation. In the simplified model, nonlinear springs with different stiffness of compression and tension are used to simulate the bolted flange connections, and the buffer in the upper part of the structure is modeled as a Yar-Hammond type bilinear hysteretic system. In this case, the rapid calculation of dynamical response structure can be completed by using such simplified model. After nondimensionlization of the equation of motion, probability densities of stationary response are obtained through numerical simulation to reveal the evolution of stationary random response for different values of parameters.

关 键 词：双线性滞迟 螺栓法兰连接结构 稳态随机响应 高斯白噪声 蒙特卡洛模拟 

分 类 号：TH131[机械工程—机械制造及自动化]