等效阻尼对弛张筛筛面动力学特性的影响分析

发布时间：2018-03-10 15:15

本文选题：惯性式弛张筛　切入点：动力学　出处：《机械设计与制造》2017年05期 　论文类型：期刊论文

【摘要】：通过考察惯性式弛张筛的结构特点,对弛张筛系统进行动力学分析,建立了包含等效阻尼系数的振动方程并求解。根据弛张筛的设计参数,求出等效阻尼存在和为零时,固定筛框和浮动筛框的运动方程。在此基础上,利用SAMCEF Field非线性有限元软件中的隐式非线性模块,成功实现了对弛张筛筛面动力学特性的仿真,获得了阻尼比b=0和b=0.1时筛面中点的位移,速度和加速度随时间的变化曲线。研究结果表明,等效阻尼对筛面加速度影响较大,阻尼越小越有利于振动强度的提高。
[Abstract]:By investigating the structural characteristics of the inertial relaxation screen, the dynamic analysis of the relaxation screen system is carried out, and the vibration equation including equivalent damping coefficient is established and solved. According to the design parameters of the relaxation screen, the existence of equivalent damping is obtained and the equivalent damping is 00:00. On the basis of the motion equations of the fixed and floating sieve frames, the simulation of the dynamic characteristics of the relaxation sieve surface is successfully realized by using the implicit nonlinear module in the SAMCEF Field nonlinear finite element software. The curves of the displacement, velocity and acceleration of the midpoint of the sieve surface at the damping ratio bn0 and b = 0.1 are obtained. The results show that the equivalent damping has a great influence on the acceleration of the sieve surface, and the smaller the damping is, the better the vibration strength is.
【作者单位】：太原理工大学新型传感器与智能控制教育部重点实验室;太原理工大学机械工程学院;
【基金】：山西省国际科技合作计划项目(2014081030) 山西省自然科学基金项目(2014011024-2)
【分类号】：TH237

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