Nonlinear Dynamics Research Of Crushing Equipment And Fem Analysis Of Key-Module

Broken and grinding equipment is an important tool in mineral resources disintegrate field. Since breaking operations can achieve large broken with less power consumption than grinding, that much broken less grinding and using broken instead of grinding becomes the priority development goals, when the national energetically advocate saving and low carbon economy. Therefore, improvement or developing new crusher became necessary choice, it is necessary to research theories and equipment related crusher. The focus of this paper is on the dynamics of dual chamber Jane put jaw type vibration crusher base on single DOF, multi DOF and virtual prototype models, which are given in Chapter 2 to 5.Through simplified the simple pendulum crusher , the single DOF system model is created, based on the material layer relationship of delayed piecewise linear between the process of crushing and recovery.The bilateral impact nonlinear lag dynamic differential equation of the single crusher DOF model is established. Then, the original equation is solved which is used Matlab software to program by adopting Runge-Kutta fourth-order algorithm, shrinking step length at impact point and iterative method of the hysteretic point. After analyze the response curve and phase diagram of the circumstances under different excitation frequency, dissimilar gaps and so on, the change rule of the system movement with clearance and excitation frequency is obtained.Considering the 4-DOF model of the crusher, the system of kinetic and potential energy is derived through the coordinate transformation. Also, using Lange Lagrangian approach derivation, the 4-DOF vibration differential equation is obtained. The numerical method by using Maple is employed to study the vibration crusher system of the dynamic response, and various points trajectory of the centroid of the pendulum and the body and the point of the pendulum in the crushing cavity.In order to analyze crusher's dynamic characteristics, the virtual prototyping model is established by using ADAMS. Based on the mechanics information and boundary conditions under work condition of key-module, Finite element method is used to key-module for static structure analysis. Finally,these key-module's securities is test.