Analysis of a 4 Bar Crank-Rocker Mechanism （分析4条根据机制）.pdf

Analysis of a 4 Bar Crank-Rocker Mechanism Using COSMOSMotion ME345: Modeling and Simulation Professor Frank Fisher Stevens Institute of Technology Last updated: June 29th, 2009 Table of Contents 1. Introduction 2. Creation of Linking Bars 3. Creation of SolidWorks Assembly 4. Simulation 5. Verifying the results 6. Further Work 1 Analysis of a 4 Bar Crank-Rocker Mechanism Using COSMOSMotion Objective: To create a simple mechanism in Cosmos Motion. Elements to use: Solid Works Cosmos Motion Four Bar Program Dynamics/Machine Design Books Description: This tutorial introduces Students to Cosmos Motion Software, which is embedded in Solid Works. A simple four bars crank rocker mechanism will be used as an example. Student will create the solid models by using Solid Works and later they will use cosmos motion to animate and calculate the absolute velocities on different points of these. Cosmos Motion: This software is useful to study the behavior of Solid Works assemblies in motion, so that the designer can detect any design problems before building hardware prototypes. This software simulates the mechanical operations of motorized assemblies and the physical forces they generate This software can perform the following calculations: - Detect interferences between parts. - Show forces and effects of collisions between parts. - Output force data to Cosmos Works FEA Package for structural analysis. - Use XY plots to graph quantities. - Animate motion on screen in wireframe, hidden-lines remo