30m^2双层非线性共振筛模态计算与动态性能评价

Modal analysis and evaluation of dynamic characteristic for the 30 m^2 nonlinear resonance screen with two decks

通过建立有限元计算模型, 对一种大型非线性双层共振筛进行了模态计算, 针对共振筛的非线性工作特性对系统动态性能进行了评估, 指出系统在工作状态中存在3倍超谐共振的可能性. 有限元模态计算结果与实测结果吻合, 说明模型建立以及参数的选择是合理的.

By setting up the finite element model, model analysis of a large-scale nonlinear resonating screen was studied.It is possible that there is there-times superharmonic resonance in the system by evaluating the nonlinear dynamic characteristic of the system. The model and parameters of the screen is rational because the results of computed is identical to the data of tests.