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液压起升机构非线性动力学特性分析
Analysis of Nonlinear Dynamic Characteristic of Hydraulic Hoisting Mechanism
【摘要】 本文建立了液压起升机构的含有刚度慢变参数的非线性多自由度动力学模型,并用模态分析和KBM方法得到了系统非线性方程的一次及改进的一次近似解。作为比较,又采用数值方法求得系统方程的数值解。分析了液压系统的动态特性,为起升机构的设计提供理论依据。
【Abstract】 This paper sets up a nonlinear multi degree of freedom dynamic model of hydraulic hoisting mechanism with slowly varying stiffness.The approximate solutions of nonlinear equations of system are obtained with the method of mode analysis and KMB.For comparison,the equations are also solved by numerieal method.The result of study provides a theoretical basis for hoisting mechanism.
【关键词】 起重机;
起升机构;
液压系统;
非线性振动;
渐进法;
动力学;
【Key words】 Crane; hoisting mechanism; hydraulic system; nonlinear Vibration; KMB method; dynamic;
【Key words】 Crane; hoisting mechanism; hydraulic system; nonlinear Vibration; KMB method; dynamic;
- 【文献出处】 建筑机械 ,CONSTRUCTION MACHINERY , 编辑部邮箱 ,1998年05期
- 【分类号】TH21,
- 【被引频次】5
- 【下载频次】116