Edu Cat en Gpe Fx v5r16 Toprint

Generative Part Structural Analysis Expert

CATIA Training Exercises

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Generative Part Structural Analysis Expert Version 5 Release 16 November 2005 EDU-CAT-EN-GPE-FX-V5R16

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Table of Contents Advanced Pre-Processing Recap Exercise Do it Yourself

Results Visualization Recap Exercise Do it Yourself

Master Exercise: Frequency Analysis

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Crank Shaft Frequency Analysis: Presentation Frequency Analysis on a Crank Shaft (1): Pre-Processing Frequency Analysis on a Crank Shaft (2): Computation Frequency Analysis on a Crank Shaft (3): Visualizing the Results

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Exercise ‘Pre-Processing’ Recap Exercise 20 min.

In this exercise you will practice different tools that you have seen in the pre-Processing lesson. You will :

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Define a Virtual Part Define the Restraints Apply two different types of Loads: An Acceleration A Force Density

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Do It Yourself (1/2) Load: Recap_Exercise_1_startup.CATAnalysis Define a contact virtual part between the bottom surface of the hanger and the vertex below. Apply a clearance of 1mm. Clamp the vertex

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Apply ‘Advanced Restraints’ on the highlighted surface: Restrain all three translations Restrain ‘rotation 1’ Select mesh named ‘Mesh to work with’

vertex

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Do It Yourself (2/2)

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Apply Loads: Apply an acceleration = – 9.8m/s2 on Z direction Apply a Vector Force = – 5000N on Z direction Select mesh named ‘Mesh to work with’

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Exercise ‘Results Visualization’ Recap Exercise 10 min.

In this exercise you will use different visualization tools to view the analysis results that you have computed in the previously recap exercise. You will:

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Visualize the Principal Stress Visualize the Precision Plot Use the Cut Plane Analysis tool

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Do It Yourself… Load: Results_Visualization_recap.CATAnalysis Display Principal Stress Image

Display Precision Image

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Use Cut Plane Section for both images Check the Clipping option in Cut Plane Analysis

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Master Exercise: Frequency Analysis You will practice concepts learned throughout the course by building the master exercise and following the recommended process

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Crank Shaft Frequency Analysis: Presentation Frequency Analysis on a Crank Shaft (1): Pre-Processing Frequency Analysis on a Crank Shaft (2): Computation Frequency Analysis on a Crank Shaft (3): Visualizing the Results

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Exercise Frequency Analysis: Presentation

P2 Exercises marked with this callout will work in P2 configuration only

30 min

In this exercise you will run a frequency analysis on a Crank Shaft. You will:

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Define the Restraints and the Loads. Compute the Analysis. Visualize the modal frequencies and their associated deformation tendencies

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Design Intent: Frequency Analysis on a Crank Shaft

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You will perform the free frequency Analysis of crank shaft with flywheel mass. A Frequency Analysis allows to know the modal frequencies of a part whether it is free or restrained. The flywheel is modeled using virtual parts on both sides of and mass is applied on virtual parts. No restraint is applied to the crank shaft. This analysis type is called ‘Free Frequency Analysis’.

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Design Process: Frequency Analysis on a Crank Shaft 1

Analysis Pre-Processing

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2

3

Modal Frequencies Visualization

Analysis Computation

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Exercise Frequency Analysis on a Crank Shaft (Step1): Pre-Processing 15 min

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Objectives: Define the distributed mass

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Do it Yourself Load: catgps_crank_shaft.CATPart

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Define Distributed Mass. Enter the GPS workbench and insert a Free Frequency Analysis Apply Rigid Virtual Part on both sides of crankshaft. The mass of the flywheel and the damper geometry must be taken into account: Apply 2kg mass equipment, on both ends using virtual part as support. (2Kg mass on each virtual part) The flywheel and damper gravity centers are represented and have to be used as part handler points.

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Exercise Frequency Analysis on a Crank Shaft (Step2): Computation 5 min

Objective:

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Compute the frequency analysis

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Do It Yourself Edit the computation parameters and ask for 11 modes Double-click ‘Frequency Case Solution’

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Compute the frequency analysis

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Exercise Frequency Analysis on a Crank Shaft (Step3): Results 10 min

Objective:

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Look at the different deformations tendencies for the 5 last modal frequencies

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Do It Yourself

Display the deformed mesh for 7th- 11th modal frequencies

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Watch the animation

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