变速多移动质量耦合作用下柔性梁系统振动响应分析
首发时间:2010-01-12
摘要:多移动质量耦合作用下柔性梁的振动响应分析,对于桥梁的结构设计及弹丸射击精度的优化分析产生重要影响。根据柔性梁振动理论,考虑移动质量间相互运动的耦合影响及与柔性梁弹性振动之间的耦合作用,建立了多移动质量-柔性梁系统的振动方程。采用时变力学系统数值求解方法,对多移动质量以各种运动形式作用下柔性梁系统的振动响应进行求解分析。数值结果表明:移动质量间相互运动的形式不同对梁的振动效果不同,相互间的耦合作用增大了对梁振动的整体效应。
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Vibration response analysis of elastic beam under masses moving with variable speeds
Abstract:The vibration response analysis of elastic beam under coupling effect among moving masses will produce some important influences to structure design of bridges and optimization analysis of firing precision. By considering the coupling effect among the moving masses and coupling effect between rigid movement of moving mass and elastic vibration of beam, the vibration equation of masses-elastic beam system is established. The vibration response of elastic beam under masses moving with various forms is calculated by solution method of time-variant mechanical system. Results show that the vibration response of elastic beam is different under different moving forms among masses, and the coupling effect among moving masses increase the vibration response of elastic beam.
Keywords: multi-moving masses flexible beam inertial load vibration response coupling effect
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