01_02_Introduction To MechCAD【荐】.ppt

Mechanical CADCh01 Ch02 Introduction to CAD/CAM/CAE Systems 袁清珂 博士 ? 教授Professor Qing K. Yuan (Ph.D) School of Mech. Electron. Engn.Guangdong University of Technology Conception CAD(Computer Aided Design) CAM(Computer Aided Manufacturing) CAE(Computer Aided Engineering) Memory capacity, fast processing speed, Interactive graphics user-interface Quality, Cost, Delivery Product cycle Solid model of example part Finite element analysis model of example part Rapid Prototyping (RP) Virtual Prototyping (VP) Prototyping Model in the past—using clay, wood, foam... Rapid prototyping—stereolithography /processes/rapid_prototyping/sla.cfm?search_string=stereolithography Virtual reality Construction Equipment from John Deere (Division Inc.) Analysis Property analysis Evaluates a design based on its physical properties, such as strength, size, volume, center of gravity, weight, and center of rotation, as well as on its thermal, fluid, and mechanical properties. Mechanism analysis Determines the motions and load associated with mechanical systems made of rigid bodies connected by joints. Property analysis Finite element method (FEM) or Finite difference method (FDM) or Finite volume method For static and dynamics responses Meshing ?boundary condition ?iteration Property analysis Mechanism analysis Assembly analysis Kinematics analysis Determines the motion of assemblies without regard to the loads, helps to determine the clearance and the range of motion video1 video2 Dynamics analysis Determines the loads that drive or create the motion of a mechanism Product data management Managing all of the information related to the product. Info stored: Part name, File name, Drawn by, Approved by, Design phase, Revision number, Date last revised…. Show a history of the product design evolution Allow multiple team members working in parallel in an accelerated design cycle. Networked computing environment / link to internet PDM CAD Creation, modification, analysis, optimiza