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应用大型有限元商业计算软件ANSYS,计算得到了板弹簧导向结晶器振动系统刚度系数在不同的变形条件下并非常数这一结论,从而引出板弹簧导向结晶器振动系统的非线性特征。通过对系统模态的分析以及瞬态分析计算,得到了系统在低阶激励频率下具有高阶频率共振响应的结果,并通过将计算得到的水平位移-垂直位移图谱与文献中测试得到的结果比较,进一步验证了模型的合理性。此外,对可能引起超谐波响应的系统阻尼非线性机制及原因进行了讨论。
Using the finite element commercial software ANSYS, the conclusion is drawn that the stiffness coefficient of the vibration system of the leaf spring guided mold is not constant under different deformation conditions, which leads to the nonlinear characteristics of the vibration system of the leaf spring guided mold. Through the analysis of modal system and transient analysis and calculation, the results of high-order frequency resonance response of the system at low-order excitation frequency are obtained. By comparing the calculated horizontal displacement-vertical displacement spectrum with the results obtained in the literature Comparison further verifies the rationality of the model. In addition, the system damping nonlinearities that may cause superharmonic response and the reasons are discussed.