The Research Of The Opening/Closing Mechanism Of The Hopper Car Door Based On The Virtual Prototype Technology

With the machinery development of high-speed and heavy-duty, the research of the kinematics and dynamics for the mechanical becomes more important. The traditional analytical method used to solve the complexity institutions, often need to solve the multiple, high-order nonlinear equations, the process is cumbersome, computation, and thus, can no longer satisfy the modern time-saving and efficient mechanical design requirements. Solution to this problem is to adopt advanced technology and tools based on the virtual prototype. It will focus on the early design stage in order to facilitate the initial screening and optimization program.This paper is about the kinematics and dynamics research of the opening/closing mechanism of the door of hopper car, first doing static analysis with diagram method to obtain the force of the component and the cylinder power in the open/closed state. And offer standard of defining the force when building the model based on virtual prototyping technology, and compare the results with the analysis of virtual prototyping technology, that makes the results more accurate and creditable. Build the model through Pro/E and then imported into ADAMS, build the simulation of the kinematics and the dynamic of the components, and compare the results to static analysis.As the elastic deformation of the component can't be ignored, at the same time, the traditional analytical methods treat the mechanism as rigid bodies and this can't meet the requirements of flexibility characteristics analysis of the component, thus a new method that included in the analysis of elastic dynamic analysis of a flexible component named Kineto-Elasto-Dynamics appeared. The paper uses ANSYS to build the Modal Neutral Document of the elastomer and imported into ADAMS, then build the rigid-flexible coupling model to analyze the effect of the elastic deformation in kinematics and the dynamic properties, and make comparison of the results of rigid body model. Finally using finite element software to analysis the key components of the stress and strain, and make a comprehensive analysis of the performance of the institutions.