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Anna University B.TECH - Polymer Technology - Semester 7 - PRODUCT DESIGN USING CAD
Posted Date: 10 Dec 2007 Resource Type: Articles/Knowledge Sharing Category: General
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Posted By: Bala Member Level: Diamond
Rating:  Points: 1
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PM702 PRODUCT DESIGN USING CAD
UNIT I
Plastics Product Design : Material Selection - Properties – Mouldability - Fits and Tolerance – Shrinkage – Warpage - Wall Thickness – Fillets - Sharp Corners - Ribs and Bosses - Holes- Moulded Threads - Inserts and Fasteners – Integral hinge – Lettering on Moulded Products.
Surface finish – Functional / Aesthetic aspects of part shape-Safety aspects of part shape - Safety aspects if the part should burn - Safety aspects if the part should fail - Use of color and design to promote safety.
UNIT II
Introduction to CAD – Computer Aided Drafting – Operating Systems – Wire frame, Surface and Solid Modeling – Using Auto CAD, Unigraphics, Ideas and Pro-E – NC Machines – NC Part Programming – Manual part programming – Computer assisted part programming – APT Language – Manual data input – NC Programming using CAD/CAM – Computer automated part programming.
UNIT III
Finite element analysis - introduction, types of analysis - need for approximation - Weight residual, Ritz and Galerkin method - Variational. Procedure for finite element analysis - stiffness matrix, solution procedure, details of finite element analysis package, model building, post processing, simple problems in 2D&3D Analysis and applications of FEM for plastic components.
UNIT IV
Introduction to CAE for plastics – MOLDFLOW Software – Design principles for part design, 3D Modelling using MF/view. Flow analysis, Cooling analysis, Shrink/Warp analysis, Stress analysis. Case studies – Interpretation of results.
Identification of Uneconomical design and redesign for manufacture.
UNIT V
Rapid Prototyping – Streolithography – Laminated Object Manufacturing, Selective Laser Sintering – Solider – Vacuum Casting – Resin injection – Application of rapid prototyping.Rapid Tooling – Cast – IT Epoxy Tooling System, Parts in Minutes – Vacuum grade Polyurethanes, Composite tooling board.
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Responses
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| Author: Bala 11 Dec 2007 | Member Level: Diamond Points : 1 | REFERENCE BOOKS:
1. R.D.Beck Plastics Product Design,
2. C-B & Liv C.N.K. Computer aided design & manufacture, East West Press.
3. Durvent W.R. The Lithographic Hand book, Narosa Pub., 1995.
4. Paul F. Jacob. Rapid Prototyping and manufacture Fundamentals of Stereolithography, 1985
5. MOLD FLOW Users Manual.
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