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Introduction to CAD/CAM/CAE
CAD Lab.
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Introduction CAD(Computer Aided Design)
CAM(Computer Aided Manufacturing) CAE(Computer Aided Engineering) Memory capacity, processing speed, Interactive graphics Quality, Cost, Delivery
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Product cycle
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Solid model of example part
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Finite element analysis model of example part
Finite element meshes Load condition: case 1 Load condition: case 2
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Stress distribution on example part
Result for case1 Result for case2
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Fill time distribution for example part
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Physical prototype of example part
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Part drawing of example part
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Core, cavity, and side cores for example part
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Completely designed mold base
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NC tool paths to machine mold
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Product cycle에서 컴퓨터의 적용
신속한 Design concept의 제공 Computer aided drafting system Geometric modeling system Parametric modeling
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Product cycle에서 컴퓨터의 적용 – cont’
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Product cycle에서 컴퓨터의 적용 – cont’
강력한 해석기능의 제공 Stress analysis, interference checking Kinematic analysis, etc. Analysis model with proper abstraction Interactive generation of analysis model
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Product cycle에서 컴퓨터의 적용 – cont’
Design evaluation을 위한 prototype 제공 Rapid Prototyping (RP) Virtual Prototyping (VP)
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RP - Stereolithography Process
Cured Plastic XY Scanning Ultraviolet Laser Beam Photo-curable Resin(Liquid) Top of the Liquid Elevator Vat Platform
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Virtual Prototyping of Engine
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Virtual Prototype of Equipment
Construction Equipment from John Deere (Division Inc.)
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Product cycle에서 컴퓨터의 적용 – cont’
편리한 design documentation 기능 제공 Computer aided drafting system Automatic drafting program
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Product cycle에서 컴퓨터의 적용 – cont’
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Product cycle에서 컴퓨터의 적용 – cont’
Process plan의 자동 생성 NC program의 자동 생성 Robot, CMM 구동 프로그램의 자동 생성
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Definitions of CAD, CAM and CAE
Creation, modification, analysis, optimization Computer graphics + design을 위한 application program Tolerance analysis, mass property calculation Finite element modeling and analysis
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Definitions of CAD, CAM and CAE – cont’
CAD – cont’ Design geometry를 정의하는 것이 기본기능 Design geometry가 product development cycle의 핵심 Computer aided drafting system, geometric modeling system이 CAD system의 핵심
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Definitions of CAD, CAM and CAE – cont’
Plan, manage, control of manufacturing operations NC가 가장 활용도가 큼 Robot programming for material handling, welding, assembling, etc.
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Definitions of CAD, CAM and CAE – cont’
CAM – cont’ Process planning의 자동화 Group technology Feature recognition or feature based modeling MRP(Material Requirement Planning)
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Definitions of CAD, CAM and CAE – cont’
Analyze CAD geometry Simulate, refine and optimize the design Kinematic program, large-displacement dynamic analysis, etc.
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Definitions of CAD, CAM and CAE – cont’
FEM이 가장 대표적인 CAE software Stress, deformation, heat transfer, fluid flow, magnetic field, continuous field problem Abstract model과 mesh 필요
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Definitions of CAD, CAM and CAE – cont’
Abstract model은 detail을 없애거나 dimension을 낮춤 Mesh 생성은 preprocessor에 의해 계산 결과는 postprocessor에 의해 Optimization과 FEM의 결합 초기에 설계 결함 확인
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