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Session 3268

Using Finite Element Software For Enhancing A Vibration Analysis Curriculum Cyrus K. Hagigat Engineering Technology Department College of Engineering The University of Toledo Toledo, Ohio 43606

I: Introduction The theme of this article is using finite element software as a supplemental teaching tool in a vibration analysis curriculum. There are several commercially available finite element software packages. Examples of commercially available software packages are ALGOR, ANSYS and NASTRAN. The choice of the software package is influenced by a variety of technical and financial factors. The discussion of suitability of a particular software package is outside the scope of this article. In this article, using ANSYS as a supplemental teaching tool in vibration analysis is discussed.

ANSYS is a finite element software package containing extensive structural analysis capabilities. ANSYS is extensively used in rotating equipment design and analysis in aerospace and power industries. Examples of rotating equipments are jet engines and power plant pumps and turbines.

Most real world vibration analysis problems do not have a closed form mathematical solution. Before proliferation of inexpensive computer hardware and relatively inexpensive computer software, approximate solutions were used for solving most practical vibration analysis problems. These classical and approximate techniques usually involve analyzing a simpler but similar structure that has a closed form mathematical solution. Often times, expensive prototype construction and testing were necessary to check the validity and accuracy of the approximate solutions.

Using the finite element technique in solving vibration analysis problems eliminates the need for developing approximate mathematical solutions. Furthermore, using a computerized technique such as the finite element analysis enables one to obtain solutions to computationally intensive problems such as transient dynamic analyses. Using the classical techniques for solving computationally intensive problems can be time consuming and at times even impossible.

This article points out the use of finite element technique as a supplement rather than a substitute for classical vibration analysis. Included are three analyses – modal, harmonic and transient dynamic as examples of problems solved by ANSYS finite element software.

Suggestions for including the finite element analysis technique in a vibration analysis curriculum are made.

Proceedings of the 2004 American Society for Engineering Education Annual Conference & Exposition Copyright 2004, American Society for Engineering Education

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Hagigat, C. (2004, June), Using Finite Element Software For Enhancing A Vibration Analysis Curriculum Paper presented at 2004 Annual Conference, Salt Lake City, Utah. 10.18260/1-2--13845