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C-MOLD Shrinkage & Warpage User's Guide


C-MOLD
ITHACA, NEW YORK, U.S.A.
Copyright © 1995, 1997 Advanced CAE Technology, Inc.
All rights reserved.

No part of this document may be reproduced in any form or by any means without written permission from Advanced CAE Technology, Inc. (doing business as C-MOLD).
For further information, contact: C-MOLD, 31 Dutch Mill Road, Ithaca, NY 14850 U.S.A. Phone: (607) 257-4280

For information about C-MOLD, contact:
C-MOLD · Europe · Tel: +31-53-483-6331 · Fax: +31-53-483-6332
C-MOLD · North America · Tel: +1-502-423-4350 · Fax: +1-502-423-4369
C-MOLD · Pacific · Tel: +886-2-695-6443 · Fax: +886-2-695-6447
E-mail: info@cmold.com
Web site: http://www.cmold.com

C-MOLD is a registered trademark of Advanced CAE Technology, Inc.
All other trademarks are the property of their respective owners.

Product Number: D-723
Version Number: 9780397

All computer simulations in this book employ C-MOLD software.

Preface

Overview of C-MOLD
Using this Manual
Conventions and Symbols
Typographic
Command
Before You Begin
Assumptions about Using C-MOLD
C-MOLD Products
Interactive Software Products
Design/Optimization Software Products
Analysis Software Products
C-MOLD Database
C-MOLD QuickFill
Dr. C-MOLD
Documentation of C-MOLD Applications

Chapter 1

Introduction

Integrated Analysis
Overview
Objectives
Features
Background
Residual Stress
Structural Analysis
Mechanisms of Shrinkage and Warpage
Service Loading and Constraints
Where to Find Further Information

Chapter 2

Preparing the Design

Overview
Mesh, Service Loadings, and Constraints
Specifying Mesh
Specifying Service Loadings and Constraints
Material Properties
Specifying Material Properties
Material Properties Specific to C-MOLD Shrinkage & Warpage
Process Conditions
Specifying Process Conditions
Process Conditions for C-MOLD Integrated Shrinkage & Warpage
Saving the Design

Chapter 3

Executing the Analysis

Procedures for Executing the Analysis
Parameters
Specifying Parameters
The Parameter File
Parameters Specific to C-MOLD Shrinkage & Warpage

Chapter 4

Evaluating the Results

Overview
Output Data Sets
Displacement
Isolation of the Mechanisms of Shrinkage and Warpage, for Displacement Data
Displacement Data Sets
X-, Y-, Z-Displacement Data Sets
Displacement Plot
Best Fit: C-MOLD's Default Displacement Plot View
Defining an Anchor Plane
Plots for X-, Y-, Z-Displacement Data
Inquiring Displacement and Distance
Additional Displacement Data Set
Stresses
Tensor Plot of Stress Tensors
Text Output Data Sets
Output Files

Chapter 5

Performing a Service Loading Analysis

Overview
Preparing the Design
Specifying Mesh
Specifying Service Loadings and Constraints
Specifying Material Properties
Saving the Design
Executing the Analysis
Evaluating the Results
Output Files

Chapter 6

Case Study Examples

Example 1: Service Loading
Geometry, Mesh, and Material
Requirements
Results and Discussion
Example 2:
Shrinkage & Warpage, and Service Loading:
Post-Molding Analysis of a Fiber-Reinforced Part
Results and Discussion

Chapter 7

Shrinkage & Warpage Example Log File

Chapter 8

Service Loading Example Log File

Appendix A

Numerical Model for Structural Analysis

Finite-Element Model of Injection-Molded Parts
Material Models
Formulation of the Shell Finite Element
Solution of the Set of Linear Algebraic Equations: Direct and Iterative Procedures

Appendix B

Determination of Constraints

Separation of Mechanically Independent Substructures
Application of Statically Determinate Constraints
The Best Fit Transformation of the Results

Appendix C

Stress Calculation

Bibliography

Appendix D

Load Calculation

Appendix E

Launching Analyses from the Keyboard

Launch With Command-Line Arguments
Create a Launch Execution File
List of Analyses

Index



[Contents] [Prev] [Next] [Index]

Copyright © 1995, 1997 Advanced CAE Technology, Inc. All rights reserved.