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Frame Design Analysis Under Complete Vehicle Boundary Conditions
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English
Abstract
In recent years, significant advances have been made in analysis and testing of vehicle frames. In particular, sophisticated finite element techniques have been developed that enable the designer to predict and evaluate frame design from the drawing board stage. However, most applications of this technology have, until very recently, been aimed at evaluating static response of the frame to certain “program” loads. This paper describes applications of an approach that considers interaction between the frame and remaining vehicle components (suspension-power train-body structure) during dynamic loading of the entire vehicle.
Techniques and applications of dynamic frame modeling are presented, including discussions of open section beam modeling, cutouts, joint flexibilities, and attachment considerations. Methods for determining dynamic properties of remaining vehicle components, including concepts of digital Fourier analysis and constrained modal testing, are described and illustrated by means of actual applications. Concepts for assembling and solving the total vehicle governing equations are presented for static, periodic, transient, and random in-service loadings.
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Citation
McClelland, W., Hay, J., and Klosterman, A., "Frame Design Analysis Under Complete Vehicle Boundary Conditions," SAE Technical Paper 741142, 1974, https://doi.org/10.4271/741142.Also In
References
- Hay J. K. Blew J. M. “Dynamic Testing and Computer Analysis of Automotive Frames.” Paper 720046 SAE Automotive Engineering Congress and Exposition Detroit January 1972
- Martz J. W. McClelland W. A. Lemon J. R. Kinsey D. W. “Improved Techniques for Dynamic Analysis of Earthmoving Equipment.” Paper 740425 SAE Annual Earthmoving Industry Conference Peoria April 1974
- Sisson T. Zimmerman R. Martz J. “Determination of Modal Properties of Automotive Bodies and Frames Using Transient Testing Techniques.” Paper 730502 SAE National Automobile Engineering Meeting Detroit May 1973
- Klosterman A. L. “A Combined Experimental and Analytical Procedure for Improving Automotive System Dynamics.” SAE Transactions 81 1972 paper 720093
- Klosterman A. L. McClelland W. A. “Combining Experimental and Analytical Techniques for Dynamic System Analysis.” Tokyo Seminar on Finite Element Analysis November 1973
- Klosterman A. L. “On the Experimental Determination and Use of Modal Representations of Dynamic Characteristics.” University of Cincinnati 1971
- McClelland W. A. Klosterman A. L. “Using NASTRAN for Dynamic Analysis of Vehicle Systems.” Paper 740326 SAE International Conference on Vehicle Structural Mechanics Detroit March 1974