inventor cad system integration michael trauttmansdorff michael@trauttmansdorff.ca 416 528 1253...

Inventor CAD System Integration

Michael Trauttmansdorff

michael@trauttmansdorff.ca416 528 1253

Engineering Group402-150 Eglinton Ave. E., Toronto ON M4P 1E8 * Phone: (416) 544-

8160

Introduction and Outline

1. Model of the Wildfire Spacecraft

2. Overview of CAD using Inventor– Parametric Modeling– Advanced Parameter Control

3. Optimization Process– Closing the design loop

1. Model of the Wildfire Spacecraft

The CAD Model serves several purposes:

a) Visualization

b) Determine mass & moments of inertia

c) Geometry for FEA Analysis

d) Final Production Drawings

1. Model of the Wildfire Spacecraft

Rendering of the model in AutoDesk Inventor 7

Engine

Aeroshell

Fuel Tank

Capsule

2. Overview of CAD using Inventor

Inventor is a fully parametric modeling environment

This means that part dimensions can be linked, and made interdependant

2. Overview of CAD using Inventor

This Dimension sets the height of

the truss

Parameterization In Action

Truss in rocket block connecting the solid motor to the primary fuel tank

2. Overview of CAD using Inventor

Parameterization In Action

Changing this dimension modifies

the entire truss.

Truss in rocket block connecting the solid motor to the primary fuel tank

2. Overview of CAD using Inventor

Advanced Parameters Control:

• AutoDesk Inventor can link all of its parameters to a spreadsheet

• Using excel, a parameter control sheet is created which contains all the dimensions which affect the model

• This sheet, instead of part specific dialog boxes, is where modifications to dimensions are made

Capsule Subsystem Parameter Sheet

Capsule Subsystem Parameter Sheet

RB Subsystem Parameter Sheet

RB Subsystem Parameter Sheet

Capsule Subsystem Parameter Sheet

Subsystem AnalysisAnd Calculation

Sheet

Subsystem AnalysisAnd Calculation

Sheet

2. Overview of CAD using Inventor

CAD Model

Subsystem AnalysisAnd Calculation

Sheet

Overall Design

Capsule DesignOverview

RB Subsystem Parameter Sheet

Subsystem AnalysisAnd Calculation

Sheet

Subsystem AnalysisAnd Calculation

Sheet

Subsystem AnalysisAnd Calculation

Sheet

RB DesignOverview

Concept Implementation Product

3. Optimization Process

• Design optimization is achieved by iteration

• Results from one level of analysis are used to refine the next level.

3. Optimization Process

Main tools in the design process

– Matlab Simulation– Inventor CAD– Ansys FEA Analysis

Integration is achieved by linking the outputs and inputs of these tools using spreadsheets

3. Optimization Process

Mission Simulation Analysis

Drawings

Model

Rocket

Information Flow in Computer Aided Design

Fully Integrated Design

3. Optimization Process

Closing the Design Loop

• The Forward flow of design parameters ensures consistency

• Adding feedback allows the design to converge to an optimal point

3. Optimization Process

• Current level of Integration :– Feedback between the Simulation and

CAD Model– Direct use of CAD Model in FEA using

Ansys Design Space

• Target Level:– Full Integration

3. Optimization Process

Mission Simulation Analysis

Drawings

Model

Rocket

- -

Information Flow in Computer Aided Design

Feedback Integrated Design

The End