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Introduction to CADWhat Do Those Letters Mean toYou?MAE 455 Computer-Aided Design and Drafting
Painting “The Big Picture” What is Computer-Aided Design (CAD)?– Creating drawings on a computer– Creating 3D shapes on a computer– Visualization Checking how things fit together to make sure they don’t interfere Checking how product will look to the customer– Doing simulations AnimationDynamicsStructural AnalysisFluid FlowHeat TransferMAE 455 Computer-Aided Design and Drafting2
The Design ProcessClarify the ProblemDesign Requirements SpecificationConceptual DesignDesign ConceptsEmbodiment DesignDesign Layout, ConfigurationDetail DesignManufacturing Drawings What is Computer-Aided Design (CAD)?Using computers to help execute the design process.MAE 455 Computer-Aided Design and Drafting3
More Specific Definitions Computer-Aided Design (CAD) is the technologyconcerned with the use of computer systems to assist inthe creation, modification, analysis, and optimization of adesign. [Groover and Zimmers, 1984] Computer-Aided Manufacturing (CAM) is the technologyconcerned with the use of computer systems to plan,manage, and control manufacturing operations. Computer-Aided Engineering (CAE) is the technologyconcerned with the use of computer systems to analyzeCAD geometry, allowing the designer to simulate andstudy how the product will behave.MAE 455 Computer-Aided Design and Drafting4
Components of CAD SystemsCAD/CAM/CAE SystemHardwareSoftwareComputing machineSolid ModelingData storage devicesAssembly ModelingMotion SimulationCommunicationdevicesFinite ElementAnalysisUser input devicesUser output devicesMAE 455 Computer-Aided Design and Drafting5
Components of CAD Systems Input DevicesImage from YouTubeImage from DesignerTechniques.com –Allan MacdonaldImage from YouTubeImage from Mitutoyo (UK) LtdMAE 455 Computer-Aided Design and Drafting6
Components of CAD Systems Output DevicesImage from Interworld Electronics& Computer Industries Inc.Image from InkSystemMAE 455 Computer-Aided Design and DraftingImage from 3D Printing Geeks7
Components of CAD Systems Integrated Input/Output Devices – Virtual RealityImage from LinkedIn – Noora Al HasaniImage from IGI BlogImage from EH PublishingImage from Engineering.comMAE 455 Computer-Aided Design and DraftingImage from Engineering.com8
Components of CAD Systems Integrated Input/Output Devices – Virtual RealityImage from www.middlevr.comImage from AtCruxImage from Thomas Publishing CompanyImage from Tech TimesImage from GeomagicImage from IndiaMART InterMESH Ltd.MAE 455 Computer-Aided Design and Drafting9Image from Thomas Hulin
SolidWorks versus other CADsoftwareSolidWorksAutodesk InventorSolid EdgeAutoCADMAE 455 Computer-Aided Design and aftingSiemens PLM NX
SolidWorks vs. AutodeskInventor vs. Solid Edge Programs are similar but not equivalent:– Same class of software– Same types of tools available– Same general techniques used in each– Specific buttons, menus and input sequencesdifferent– Customer lists different Today vs. tomorrow– User interfaces will change– Fundamentals will stay the sameMAE 455 Computer-Aided Design and Drafting11
Course Goals Basic and Advanced Shape Modeling Parametric Modeling Working in Teams Advanced Top-Down Design Methodology Use of Solid Models for DownstreamApplications– Design Documentation– Mechanism Analysis– Finite Element Analysis/Shape Optimization– Computer-Aided ManufacturingMAE 455 Computer-Aided Design and Drafting12
Course Expectations Learning through doing (hands-onlearning) Learning by studying theory Benefits from course– How to model products well, using state ofthe art CAD software– Understanding how computer is leveragedin design processMAE 455 Computer-Aided Design and Drafting13
Computer-Aided Design (CAD) is the technology concerned with the use of computer systems to assist in the creation, modification, analysis, and optimization of a design. [Groover and Zimmers, 1984] Computer-Aided Manufacturing (CAM) is the technology concerned with the use of comput
