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带有移动摆载荷柔性梁的动力学分析

DOI: doi:10.3969/j.issn.1006-7043.2011.05.020

Keywords: 移动摆载荷, 耦合振动, 数值仿真

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Abstract:

工程中移动载荷作用下梁的耦合振动问题日益突出,针对移动载荷动力作用引起梁结构产生疲劳、降低强度及影响系统运行安全性问题,研究移动摆载荷作用下柔性梁的振动位移响应.基于Hamilton原理推导带有移动摆载荷柔性梁耦合动力学微分方程,利用假设模态法对移动摆载荷柔性梁耦合系统动力学方程进行离散,采用Newmark逐步积分法,利用Matlab语言对离散后动力学方程进行数值仿真及可视化处理,结果表明移动物体质量、速度及加速度等因素对柔性梁振动的位移响应有不同程度的影响.

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