单盘转子系统受强动载荷作用的刚-塑性动力学响应  

Rigid,perfectly plastic dynamic behavior of a single disk rotor system subjected to a strong dynamic load

作　　者：宋慧斌[1] 张娅[1] 王维民[1] 

机构地区：[1]北京化工大学机电工程学院高端机械装备健康监控与自愈化北京市重点实验室,北京100029

出　　处：《北京化工大学学报（自然科学版）》2017年第3期70-75,共6页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家自然科学基金(51275028);国家自然科学基金重点项目(51135001);北京高等学校青年英才计划(YETP0495)

摘　　要：通常转子系统的响应分析是在弹性变形假设下进行的,但当转子受到强动载荷撞击时将产生塑性变形。本文结合转子动力学和塑性动力学,分析了单盘转子受强动载荷作用时的刚-塑性动力学响应。首先,将单盘转子系统简化为中间带质量块的简支梁,给出了在阶跃载荷作用下系统的各阶段响应模式。在此基础上,详细讨论了单盘转子在跨度中点受撞击时的动力学响应完全解,并结合龙格-库塔法得到了单盘转子的瞬态变形。所得结果可为转子系统的动力响应和失效分析提供依据。The response analysis of a rotor system is usually carried out based on the assumption of elastic deforma- tion, but when the rotor is subjected to strong dynamic loads, plastic deformation is unavoidable. In this paper, the rigid plastic dynamic response of a single disk rotor subjected to dynamic loads has been analyzed in terms of the rotor dynamics and plastic dynamics. The rotor system was simplified as a supported beam with intermediate mass, and the response modes of the system under the action of step loads are given. On the basis of this analysis, the complete solution of the dynamic response when the beam was impacted is discussed in detail. Furthermore, the instantaneous deformation profile of a single disk rotor was acquired using the Runge-Kutta method. The results lay a foundation for understanding the dynamic response and failure analysis of rotor systems.

关 键 词：单盘转子 塑性动力学响应 撞击 简支梁 

分 类 号：V231.92[航空宇航科学与技术—航空宇航推进理论与工程]