闭式齿轮传动系统内部动态响应的有限元法预测
发布时间：2018-10-24 14:37
【摘要】：针对闭式齿轮传动系统动态分析理论求解复杂,试验方法只能测得表面振动数据的问题,对某二级行星减速器进行三维建模生成有限元模型,完成有限元模态分析;通过模态试验,验证了模拟的正确性;利用ANSYS瞬态动力学分析的完全法(full),考虑时变啮合刚度、综合啮合误差、齿侧间隙及阻尼比等非线性因素的影响,实现了动态模拟和台架试验对比。研究结果表明:有限元法所得前六阶固有频率与试验结果接近,频率最大误差为8.12%,振型吻合;动态模拟结果与台架试验测得的振动加速度平均值误差较小,振动规律基本一致。以此为依据,获取了输入端与输出端的振动加速度和齿圈啮合点应力变化曲线,与工程实际相符,有限元预测方法可弥补试验法在分析内部振动响应方面的不足。
[Abstract]:To solve the problem that the dynamic analysis theory of closed gear transmission system is complex and the test method can only measure the surface vibration data, the finite element model is created by three-dimensional modeling of a two-stage planetary reducer, and the finite element modal analysis is completed. The correctness of the simulation is verified by modal test, and the influence of nonlinear factors, such as time-varying meshing stiffness, combined meshing error, tooth clearance and damping ratio, is considered by using the complete method of ANSYS transient dynamic analysis, (full),. Dynamic simulation and bench test are realized. The results show that the first six natural frequencies obtained by the finite element method are close to the experimental results, the maximum frequency error is 8.12 and the vibration mode is in agreement with the dynamic simulation results, and the average error of the vibration acceleration measured by the dynamic simulation method is smaller than that of the vibration acceleration measured by the bench test, and the vibration law is basically consistent. On this basis, the vibration acceleration curves of input and output ends and the stress change curves of gear ring meshing point are obtained, which are in accordance with the engineering practice. The finite element prediction method can make up the deficiency of the test method in analyzing the internal vibration response.
【作者单位】： 西安航空职业技术学院航空制造工程学院;
【基金】：国家自然科学基金资助项目(51305288) 西安航空职业技术学院2016-2017年度自选综合科研项目(16XHKY-001)
【分类号】：TH132.41
本文编号：2291693
[Abstract]:To solve the problem that the dynamic analysis theory of closed gear transmission system is complex and the test method can only measure the surface vibration data, the finite element model is created by three-dimensional modeling of a two-stage planetary reducer, and the finite element modal analysis is completed. The correctness of the simulation is verified by modal test, and the influence of nonlinear factors, such as time-varying meshing stiffness, combined meshing error, tooth clearance and damping ratio, is considered by using the complete method of ANSYS transient dynamic analysis, (full),. Dynamic simulation and bench test are realized. The results show that the first six natural frequencies obtained by the finite element method are close to the experimental results, the maximum frequency error is 8.12 and the vibration mode is in agreement with the dynamic simulation results, and the average error of the vibration acceleration measured by the dynamic simulation method is smaller than that of the vibration acceleration measured by the bench test, and the vibration law is basically consistent. On this basis, the vibration acceleration curves of input and output ends and the stress change curves of gear ring meshing point are obtained, which are in accordance with the engineering practice. The finite element prediction method can make up the deficiency of the test method in analyzing the internal vibration response.
【作者单位】： 西安航空职业技术学院航空制造工程学院;
【基金】：国家自然科学基金资助项目(51305288) 西安航空职业技术学院2016-2017年度自选综合科研项目(16XHKY-001)
【分类号】：TH132.41
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