Performing Random Vibration Fatigue Analysis Using Ansys Mechanical — Lesson 4

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Vibration can be found everywhere in the environment, from a moving bicycle to a spacecraft in orbit. Even though the vibrations generate low stresses in the components, continuous loads often cause fatigue. As a result, it is critical to do a fatigue study to assess the damage caused by the vibrations and to compute the estimated life of the concerned part. In this video, we'll go through the importance of performing a random vibration fatigue study and how to accomplish it in Ansys Mechanical.

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0:00 - Intro
1:20 - Random vibration analysis - general
2:04 - Stress Life and Strain Life fatigue analysis
2:44 - Ansys Fatigue Tool – general
3:05 - SN Fatigue Analysis
3:22 - Engineering Data – defining a material
6:38 - Cycle Counting Methods for vibration induced fatigue analysis
8:37 - Statistical frequency definition
8:52 - Random vibration Analysis Settings
10:40 - Mode superposition workflow on the project page
11:16 - Mesh sizing
11:28 - Modal Analysis - analysis settings
11:51 - Modal Analysis - boundary conditions
12:10 - Random vibration – loads
12:48 - Random vibration – analysis settings
13:01 - Random vibration analysis results