⚙️ Ansys Tutorial: Random Vibrations Analysis | Stress, Displacement & Fatigue (Sigma Criteria)
Ansys Tutorial: Random Vibrations Analysis | Stress, Displacement & Fatigue (Sigma Criteria)
In this tutorial, we’ll perform a Random Vibration Analysis of a four-deck rack using ANSYS Mechanical. You’ll learn how to set up *modal and random vibration systems*, apply a *PSD base excitation*, and evaluate results in terms of stress, displacement, and fatigue life using the *1σ, 2σ, and 3σ criteria*.
We’ll cover every step — from geometry creation in SpaceClaim and shared topology setup, to modal analysis, PSD input definition, and fatigue evaluation based on Steinberg theory.
📌 What You’ll Learn:
✅Geometry and mesh setup in ANSYS SpaceClaim
✅Coupling modal analysis with random vibration
✅Applying PSD acceleration as base excitation
✅Evaluating deformation and stress using sigma criteria
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💡 Keywords: #Randomvibrationanalysis, #ANSYStutorial, #modalanalysis, #PSDacceleration, #fatiguelife, #sigmacriteria, #mechanicalvibration
0:00 4:42 Introduction
4:43 11:42 Geometry
11:43 14:02 Modal analysis
14:03 15:36 Results: Mode Shapes
15:37 17:02 Random Analysis
17:03 19:00 Boundary Conditions
19:01 19:99 Displacement & Stress
20:00 22:24 PSD Response
22:25 24:38 Fatigue Analysis