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文章结合计算流体力学的方法(CFD)和有限元分析的方法(FEA),对工程车辆常用的双筒减振器建立了非线性的数学模型。模型中的阀片变形部分通过有限元方法得到,各部分流量特性通过计算流体力学方法得到。减振器的模型通过由CFD计算得到的各部分流量组合得到。在此基础上,应用Matlab软件开发了仿真程序。仿真和实验的结果表明,在参数变化较大范围内,均可以得到令人满意的吻合曲线。
Combining the methods of Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA), a nonlinear mathematical model is established for the dual-tube shock absorber used in engineering vehicles. The deformation of the valve plate in the model is obtained by the finite element method. The flow characteristics of each part are obtained by computational fluid dynamics. The model of the shock absorber is obtained by combining the flow rates of the various sections calculated by the CFD. On this basis, the simulation program has been developed by Matlab software. The simulation and experimental results show that the satisfactory agreement curve can be obtained in a wide range of parameters.