This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Modal Modeling Techniques for Vehicle Shake Analysis
Annotation ability available
Sector:
Language:
English
Abstract
A modal model is a concise and convenient way to describe the dynamic characteristics of a structural subsystem of a vehicle, such as a frame or a body structure. Techniques have been developed for obtaining a modal model by fitting the model to measured frequency responses. These modal models are then used as “building blocks” and coupled to mathematical models of the vehicle's other subsystems (the suspensions, the engine mounting system, etc.) to simulate the total vehicle system.
This paper explains the basic theory of modal modeling, including the concepts of mode shape scaling and residual compliances. Some sample vehicle shake simulation studies are also discussed.
Recommended Content
Authors
Citation
Davis, J., "Modal Modeling Techniques for Vehicle Shake Analysis," SAE Technical Paper 720045, 1972, https://doi.org/10.4271/720045.Also In
References
- Klosterman A. L. Lemon J. R. “Building Block Approach to Structural Dynamics.” Paper presented at ASME Vibrations Conference Philadelphia March 1969
- Meirovitch L. “Analytical Methods in Vibrations.” New York The Macmillan Company 1967
- Noble B. “Applied Linear Algebra.” Englewood Cliffs, N. J. Prentice-Hall 1969 142 39 46
- Snowdon J. C. “Vibration and Shock in Mechanical Systems.” New York John Wiley & Sons, Inc. 1968 17
- Karhopp D. C. “Computer Representation of Continuous Vibratory Systems Using Normal Modes and Bond Graph Techniques.” Technical Journal of Simulation Councils, Inc. 10 3 March 1968