Project

Project Created

Thursday, July 11, 2002 at 11:37:42 AM

Project Last Modified

Friday, October 04, 2002 at 10:50:32 AM

Report Created

Monday, November 04, 2002 at 11:34:39 AM

Software Used

ANSYS DesignSpace 7.0

Database

D:\Models\DesignSpace\Frame.dsdb

1. Summary

This report documents design and analysis information created and maintained using the ANSYS DesignSpace^® engineering software program. Each scenario listed below represents one complete engineering simulation.

Scenario 1

• Based on the Inventor assembly "D:\Models\Inventor\Incision\IncisionR5\1208-20\1208-B-20-0001.iam".
• Considered the effect of part-to-part contact, structural loads and structural supports.
• Calculated structural and frequency results.
• No convergence criteria defined.
• No alert criteria defined.
• See Scenario 1 below for supporting details and Appendix A1 for corresponding figures.

2. Introduction

The ANSYS DesignSpace CAE (Computer-Aided Engineering) software program was used in conjunction with 3-D CAD (Computer-Aided Design) solid geometry to simulate the behavior of mechanical parts under thermal/structural loading conditions. ANSYS DesignSpace automated FEA (Finite Element Analysis) technologies from ANSYS, Inc. to generate the results listed in this report.

Each scenario presented below represents one complete engineering simulation. The definition of a simulation includes known factors about a design such as material properties per part, contact behavior between parts (in an assembly), and types and magnitudes of loading conditions. The results of a simulation provide insight into how the parts may perform and how the design might be improved. Multiple scenarios allow comparison of results given different loading conditions, materials or geometric configurations.

Convergence and alert criteria may be defined for any of the results and can serve as guides for evaluating the quality of calculated results and the acceptability of values in the context of known design requirements.

• Solution history provides a means of assessing the quality of results by examining how values change during successive iterations of solution refinement. Convergence criteria sets a specific limit on the allowable change in a result between iterations. A result meeting this criteria is said to be "converged".
• Alert criteria define "allowable" ranges for result values. Alert ranges typically represent known aspects of the design specification.

The discussions below follow the organization of information in the ANSYS DesignSpace "Explorer" user interface. Each scenario corresponds to a unique branch in the Explorer "Outline". Names emphasized in "double quotes" match preferences set in the user interface.

All values are presented in the "SI Metric (m, kg, Pa, °C, s)" unit system.

Notice

Do not accept or reject a design based solely on the data presented in this report. Evaluate designs by considering this information in conjunction with experimental test data and the practical experience of design engineers and analysts. A quality approach to engineering design usually mandates physical testing as the final means of validating structural integrity to a measured precision.

3. Scenario 1

3.1. "Model"

"Model" obtains geometry from the Inventor assembly "D:\Models\Inventor\Incision\IncisionR5\1208-20\1208-B-20-0001.iam".

• "1208-C-20-0021.ipt:1", "1208-C-20-0023.ipt:1", "1208-C-20-0024.ipt:1", "ISO 4762 - M8 x 50.ipt:1", "ISO 7090 - 8 - 140 HV.ipt:1", "ISO 4762 - M8 x 50.ipt:2", "ISO 7090 - 8 - 140 HV.ipt:2", "ISO 4762 - M8 x 50.ipt:3", "ISO 7090 - 8 - 140 HV.ipt:3", "ISO 4762 - M8 x 50.ipt:4", "ISO 7090 - 8 - 140 HV.ipt:4", "ISO 4762 - M8 x 50.ipt:5", "ISO 7090 - 8 - 140 HV.ipt:5", "ISO 4762 - M8 x 50.ipt:6", "ISO 7090 - 8 - 140 HV.ipt:6", "ISO 4762 - M8 x 25.ipt:1", "ISO 7090 - 8 - 140 HV.ipt:7", "ISO 4762 - M8 x 25.ipt:2", "ISO 7090 - 8 - 140 HV.ipt:8", "ISO 4762 - M8 x 25.ipt:3", "ISO 7090 - 8 - 140 HV.ipt:9", "ISO 4762 - M8 x 25.ipt:4", "ISO 7090 - 8 - 140 HV.ipt:10", "ISO 4762 - M8 x 25.ipt:5", "ISO 7090 - 8 - 140 HV.ipt:11", "ISO 4762 - M8 x 25.ipt:6", "ISO 7090 - 8 - 140 HV.ipt:12", "ISO 4762 - M8 x 25.ipt:7", "ISO 7090 - 8 - 140 HV.ipt:13", "ISO 4762 - M8 x 25.ipt:8", "ISO 7090 - 8 - 140 HV.ipt:14", "ISO 4762 - M8 x 50.ipt:7", "ISO 7090 - 8 - 140 HV.ipt:15", "ISO 4762 - M8 x 50.ipt:8", "ISO 7090 - 8 - 140 HV.ipt:16", "ISO 4762 - M8 x 50.ipt:9", "ISO 7090 - 8 - 140 HV.ipt:17", "ISO 4762 - M8 x 50.ipt:10", "ISO 7090 - 8 - 140 HV.ipt:18", "ISO 4762 - M8 x 50.ipt:11", "ISO 7090 - 8 - 140 HV.ipt:19", "ISO 4762 - M8 x 50.ipt:12", "ISO 7090 - 8 - 140 HV.ipt:20", "ISO 4762 - M8 x 25.ipt:9", "ISO 7090 - 8 - 140 HV.ipt:21", "ISO 4762 - M8 x 25.ipt:10", "ISO 7090 - 8 - 140 HV.ipt:22", "ISO 4762 - M8 x 25.ipt:11", "ISO 7090 - 8 - 140 HV.ipt:23", "ISO 4762 - M8 x 25.ipt:12", "ISO 7090 - 8 - 140 HV.ipt:24", "ISO 4762 - M8 x 25.ipt:13", "ISO 7090 - 8 - 140 HV.ipt:25", "ISO 4762 - M8 x 25.ipt:14", "ISO 7090 - 8 - 140 HV.ipt:26", "ISO 4762 - M8 x 25.ipt:15", "ISO 7090 - 8 - 140 HV.ipt:27", "ISO 4762 - M8 x 25.ipt:16" and"ISO 7090 - 8 - 140 HV.ipt:28" were suppressed. Suppressed parts do not effect the results in this scenario in any way.
• The bounding box for all positioned parts in the model measures 1.18 by 0.76 by 0.34 m along the global x, y and z axes, respectively.
• The model weighs a total of 72.11 kg.

3.1.1. Contact

• "Contact" uses a tolerance of 0.0 for automatic detection.
• "Contact" is set to use symmetric contact.

3.1.2. Mesh

• "Mesh"(Figure A1.1) , associated with "Model" has an overall relevance of 0.
• "Mesh" contains 110064 nodes and 53143 elements.

No mesh controls specified.

3.2. "Environment"

"Environment"(Figure A1.2) contains all loading conditions defined for "Model" in this scenario.

The following tables list local loads and supports applied to specific geometry.

3.2.1. Structural Loading

3.2.2. Structural Supports

3.3. "Solution"

"Solution" contains the calculated response for "Model" given loading conditions defined in "Environment".

It was selected that the program would choose the solver used in this solution.

3.3.1. Structural Results

• Convergence tracking not enabled.

3.3.2. Frequency Results

Frequency results apply to all active parts in "Model".

• Convergence tracking not enabled.

Appendixes

A1. Scenario 1 Figures

Figure A1.1. "Mesh" Geometry

Figure A1.2. "Environment" Geometry

Figure A1.3. "Equivalent Stress" Contours

Figure A1.4. "Total Deformation" Contours

A2. Definition of "Structural Steel"

• Description: "Fatigue Data at zero mean stress comes from 1998 ASME BPV Code, Section 8, Div 2, Table 5-110.1"
• Material data file: "C:\Program Files\ANSYS Inc\v70\AISOL\CommonFiles\Language\en-us\EngineeringData\Materials\Structural_Steel.xml"

Table A2.1. Thermal Conductivity vs. Temperature

Table A2.2. Alternating Stress vs. Cycles

A3. Glossary

Alert Criteria

Alerts cause ANSYS DesignSpace to flag results that exceed minimum or maximum allowable values.

Bonded Contact

Prevents contacting regions on selected surfaces from sliding or separating. "Glues" the surfaces together.

Bounding Box

A three-dimensional cube aligned to the global x, y and z axes that exactly contains a part or assembly.

Convergence Tracking

Convergence tracking causes ANSYS DesignSpace to iteratively refine the solution until the criteria for allowable change in the result is met or the maximum number of loops is exhausted.

Frictionless Contact

Models standard nonlinear unilateral contact. Allows free sliding and gaps to form at contact interface.

No Separation

Prevents contacting regions on selected surfaces from separating. Frictionless sliding may occur.

Relevance

Defines the acceptable accuracy for a part and valuates the importance of parts in an assembly. The relevance range extends from -100 to +100, where -100 implies maximum software speed and +100 implies maximum accuracy in calculating results.

Rough Contact

Nonlinear contact that allows gaps to form at contact interface but does not allow sliding (infinite coefficient of friction).

Scope

Filters a result to selected geometry. If combined with convergence tracking, focuses refinement activity on the selected geometry.

Simplification

A software technique for removing negligible geometry for parts to improve reliability, increase speed and reduce overhead. The simplification range extends from -100 to +100, where -100 implies aggressive simplification and +100 implies highly selective simplification.

Visible

A user preference that controls the visibility of parts in figures in this report. Unlike suppressed parts, invisible parts are fully considered in the calculation of results.

A4. Distributing This Report

The following table lists the files that you need to include for posting this report to an Internet or Intranet web server or for moving this report to a different location. Store all files in the same folder as the HTML page.

This report was originally generated in the folder "C:\Documents and Settings\boc\Application Data\Ansys\v70\".