Autodesk 466B1-05A761-1304 - AutoCAD Inventor Simulation Suite... Manual de usuario

Autodesk Inventor Simulation 2010

Getting Started

January 2009Part No. 466B1-050000-PM01A

reproduced in any form, by any method, for any purpose.

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Contents

Stress Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Chapter 1 Get Started With Stress Analysis . . . . . . . . . . . . . . . . . . 3

About Autodesk Inventor Simulation . . . . . . . . . . . . . . . . . . . 3

Learn Autodesk Inventor Simulation . . . . . . . . . . . . . . . . . . . . 4

Use Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Use Stress Analysis Tools . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Understand the Value of Stress Analysis . . . . . . . . . . . . . . . . . . 6

Understand How Stress Analysis Works . . . . . . . . . . . . . . . . . . 7

Analysis Assumptions . . . . . . . . . . . . . . . . . . . . . . . . 7

Interpret Results of Stress Analysis . . . . . . . . . . . . . . . . . . . . . 9

Equivalent or Von Mises Stress . . . . . . . . . . . . . . . . . . . . 9

Maximum and Minimum Principal Stresses . . . . . . . . . . . . 10

Deformation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Safety Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Frequency Modes . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Chapter 2 Analyze Models . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Do a Static Stress Analysis . . . . . . . . . . . . . . . . . . . . . . . . . 13

Enter Environment and Create a Simulation . . . . . . . . . . . . 14

Exclude Components . . . . . . . . . . . . . . . . . . . . . . . . 15

Specify Material . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Add Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

iii

Add Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Add Contact Conditions . . . . . . . . . . . . . . . . . . . . . . 19

Generate a Mesh . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Run the Simulation . . . . . . . . . . . . . . . . . . . . . . . . . 20

Run Modal Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Chapter 3 View Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Use Results Visualization . . . . . . . . . . . . . . . . . . . . . . . . . 23

Edit the Color Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Read Stress Analysis Results . . . . . . . . . . . . . . . . . . . . . . . . 26

Interpret Results Contours . . . . . . . . . . . . . . . . . . . . . 26

Animate Results . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Set Results Display Options . . . . . . . . . . . . . . . . . . . . . 28

Chapter 4 Revise Models and Stress Analyses . . . . . . . . . . . . . . . . 31

Change Model Geometry . . . . . . . . . . . . . . . . . . . . . . . . . 31

Change Solution Conditions . . . . . . . . . . . . . . . . . . . . . . . 32

Update Results of Stress Analysis . . . . . . . . . . . . . . . . . . . . . 34

Chapter 5 Generate Reports . . . . . . . . . . . . . . . . . . . . . . . . . 35

Run Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Interpret Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Model Information . . . . . . . . . . . . . . . . . . . . . . . . . 36

Project Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Save and Distribute Reports . . . . . . . . . . . . . . . . . . . . . . . . 38

Saved Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Print Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Distribute Reports . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Chapter 6 Manage Stress Analysis Files . . . . . . . . . . . . . . . . . . . 39

Create and Use Analysis Files . . . . . . . . . . . . . . . . . . . . . . . 39

Understand File Relationships . . . . . . . . . . . . . . . . . . . 39

Resolve Missing Files . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Dynamic Simulation . . . . . . . . . . . . . . . . . . . . . . . . 41

Chapter 7 Get Started with Simulation . . . . . . . . . . . . . . . . . . . 43

About Autodesk Inventor Simulation . . . . . . . . . . . . . . . . . . . 43

Learning Autodesk Inventor Simulation . . . . . . . . . . . . . . . . . 44

Use Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Understand Simulation Tools . . . . . . . . . . . . . . . . . . . . . . . 45

iv | Contents

Simulation Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . 45

Interpret Simulation Results . . . . . . . . . . . . . . . . . . . . . . . 45

Relative Parameters . . . . . . . . . . . . . . . . . . . . . . . . . 45

Coherent Masses and Inertia . . . . . . . . . . . . . . . . . . . . 46

Continuity of Laws . . . . . . . . . . . . . . . . . . . . . . . . . 46

Chapter 8 Simulate Motion . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Understand Degrees of Freedom . . . . . . . . . . . . . . . . . . . . . 47

Understand Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Convert Assembly Constraints . . . . . . . . . . . . . . . . . . . . . . 49

Run Simulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Chapter 9 Construct Moving Assemblies . . . . . . . . . . . . . . . . . . 55

Retain Degrees of Freedom . . . . . . . . . . . . . . . . . . . . . . . . 55

Add Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Impose Motion on Joints . . . . . . . . . . . . . . . . . . . . . . . . . 58

Run Simulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Chapter 10 Construct Operating Conditions . . . . . . . . . . . . . . . . . 61

Complete the Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Add Friction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Add a Sliding Joint . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Contents | v

Stress Analysis

Part 1 of this manual presents the getting started information for Stress Analysis in the Autodesk

Inventor®Simulation software. This add-on to the Autodesk Inventor assembly, part, and

sheet metal environments provides the capability to analyze the static stress and natural

frequency responses of mechanical designs.

Get Started With Stress

Analysis

Autodesk Inventor®Simulation software provides a combination of industry-specific tools

that extend the capabilities of Autodesk Inventor®for completing complex machinery and

other product designs.

Stress Analysis in Autodesk Inventor Simulation is an add-on to the Autodesk Inventor

assembly, part, and sheet metal environments.

Static Analysis provides the means to simulate stress, strain, and deformation.

Modal Analysis provides means to find natural frequencies of vibration and mode shapes of

mechanical designs.

You can visualize the affects in 3D volume plots, create reports for any results, and perform

parametric studies to refine your design.

This chapter provides basic information about the stress analysis environment and the

workflow processes necessary to analyze loads and constraints placed on a part or assembly.

About Autodesk Inventor Simulation

Built on the Autodesk Inventor application, Autodesk Inventor Simulation

includes several different modules. The first module included in this manual is

Stress Analysis. It provides functionality for Structural Static and Modal analysis

of mechanical product designs.

This manual provides basic conceptual information to help get you started and

specific examples that introduce you to the capabilities of Stress and Modal

Analysis in Autodesk Inventor Simulation.

Learn Autodesk Inventor Simulation

We assume that you have a working knowledge of the Autodesk Inventor

Simulation interface and tools. If you do not, use Help for access to online

documentation and tutorials, and complete the exercises in the Autodesk

Inventor Simulation Getting Started manual.

At a minimum, we recommend that you understand how to:

■Use the assembly, part modeling, and sketch environments and browsers.

■Edit a component in place.

■Create, constrain, and manipulate work points and work features.

■Set color styles.

Be more productive with Autodesk®software. Get trained at an Autodesk

Authorized Training Center (ATC®) with hands-on, instructor-led classes to

help you get the most from your Autodesk products. Enhance your productivity

with proven training from over 1,400 ATC sites in more than 75 countries.

For more information about training centers, contact [email protected]

or visit the online ATC locator at www.autodesk.com/atc.

We also recommend that you have a working knowledge of Microsoft®

Windows®XP or Windows Vista®. It is desirable, but not required, to have a

working knowledge of concepts for stress analysis of mechanical assembly

designs.

Use Help

As you work, you may need additional information about the task you are

performing. The Help system provides detailed concepts, procedures, and

reference information about every feature in the Autodesk Inventor Simulation

modules as well as the standard Autodesk Inventor Simulation features.

To access the Help system, use one of the following methods:

■Click Help ➤Help Topics, and then use the Table of Contents to navigate

to Stress Analysis topics.

■Press F1 for Help with the active operation.

■In any dialog box, click .

4| Chapter 1 Get Started With Stress Analysis

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