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工程机械在各机构启动、制动以及运转过程中,在机构系统的零件及承载结构中总会伴随产生振动现象,需要运用机械振动理论来研究分析某一机构、结构或整台机器的动态特性与动力强度。迄今一般设计中,在动力计算时均运用工程实用的简化方法,即将整个机构或结构简化为一个或二、三个自由度的弹性系统力学模型,从而建立动力方程式并解出动态过程中的位移,速度与动载荷,一般应用推导
Construction machinery in each agency start-up, braking and operation process, the system components and bearing structure will always be accompanied by the phenomenon of vibration, the need to use mechanical vibration theory to study the analysis of a body, structure or the entire machine dynamic characteristics With dynamic strength. So far in general design, a simplified method of practical engineering has been applied in dynamic calculation. That is, the entire mechanism or structure is simplified into one or two or three degrees of freedom elastic system mechanical model to establish the dynamic equation and solve the displacement in the dynamic process , Speed and dynamic load, the general application of deduction