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根据实际使用情况利用ANSYS软件对自卸车车厢做了模态分析,得出前10阶固有频率,同时选取D、E、F三种道路路面等级,对自卸车进行了空载状态下的车厢激励响应分析,并与模态分析结果进行了对比分析,得到车厢在3种路面激励作用下最低响应频率高于自卸车车厢10阶模态下的最大固有频率,研究表明,该自卸车行驶在D、E、F三种等级路面不会发生共振。
According to the actual situation, ANSYS software was applied to the modal analysis of the dump truck compartment. The first 10 natural frequencies were obtained. At the same time, D, E and F road surface rankings were selected, and the dumper truck under no-load condition was stimulated Analysis and comparison with the results of modal analysis, the minimum natural frequency of the car under the three kinds of pavement excitation is obtained, which is higher than that of the ten-car mode. E, F three levels of the road will not resonate.