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Course Description

Vibration is an important consideration in many engineering applications, including compressors, turbines, gears, and bearings. Modal analysis is used to predict the natural frequencies of the structure. Knowing these frequencies, the engineer can design the structure to avoid resonance leading to catastrophic failure. You will explore the big ideas in modal analysis by extending 3D elasticity concepts then apply those big ideas to solve a practical problem in Ansys: predicting the natural frequencies and mode shapes for a turbine disk with blades.

Professor Bhaskaran will walk you through solving the “turbine disk with blades" example problem in Ansys. The geometry will be provided to you as a CAD file. As you set up and solve this vibration simulation in Ansys, you'll continue to refer back to the big ideas in modal analysis to make sense of the Ansys inputs and outputs. You will follow along in Ansys as Professor Bhaskaran demonstrates best practices for simulating vibration problems. Your final simulation will be a product of your own efforts and will give you the confidence to create reliable vibration simulations.

You are required to have completed the following courses or have equivalent experience before taking this course:

  • Conceptual Foundations of Finite Element Analysis
  • Ansys Mechanical Concepts and Implementation
  • Elasticity Applications
  • Beam and Shell Applications

Faculty Author

Rajesh Bhaskaran

Benefits to the Learner

  • Construct the mathematical model underlying modal analysis for predicting natural frequencies and the numerical solution strategy used to solve the model
  • Solve an example problem in Ansys involving a turbine disk with blades undergoing vibration

Target Audience

  • Mechanical engineers
  • Simulation engineers
  • Civil engineers
  • Aerospace engineers
  • Prospective engineers
  • Biomedical engineers
  • Design engineers
  • Undergraduate and graduate students in engineering

Applies Towards the Following Certificates

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Cornell Engineering
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