This work presents an innovative approach to dynamic design that has the significant advantage of allowing the dynamic requirements to be specified from the earliest design stage. The method applies genetic algorithms to optimize the dynamic behavior of the engine-subframe system and its links to the chassis. The optimization minimizes the sum of the amplitudes of the forces transmitted to the chassis from each mounting, while complying with the static and dynamic constraints. The genetic algorithm was applied to a multibody system model of the engine-subframe system and its links to derive new, improved configurations.

Issue Section:
Technical Papers
Keywords:
genetic algorithms, CAD, mechanical engineering computing, vibrations
Topics:
Engines, Genetic algorithms, Optimization, Design, Stiffness
1.
Concilio, A., De Vivo, L., and Sollo, A., 1996, “A Comparison of Different Strategies for Interior Active Noise Control by Piezoactuators,” Proceedings, ISMA21 Conference, Leuven, Belgium, pp. 247–258.
2.
Cooper, J. E., De Fonseca, P., and Swivers, J., 1996, “Optimal Random Excitation,” Proceedings ISMA21 Conference, Leuven, Belgium, pp. 903–913.
3.
Heylen, W., and Mas, P., 1996, “Optimization of Structural Modifications Based on Frequency Response Functions,” Proceedings, ISMA21 Conference, Leuven, Belgium, pp. 1843–1850.
4.
Chen, W., Fadel, G. M., and Sandurkar, S., 1997, “GAPRUS: Three-Dimensional Pipe Routing Using Genetic Algorithms and Tessellated Objects,” Proceedings, 1997 Design Engineering Technical Conferences, Sacramento, CA.
5.
Edge, K. A., and Kwong, A. H. M., 1996, “Minimization of Noise Transmission through Optimizing Hydraulic Pipe Mounting Locations,” Proceedings, ISMA21 Conference, Leuven, Belgium, pp. 549–558.
6.
Muscia, R., 1997, “Development of a Methodology for Vibration Elastomeric Isolators Design,” Proceedings, 10th International ADM Conference, Florence, Italy, pp. 255–264.
7.
Bregant, L. and Pediroda, V., 1998, “Optimal Unconstrained Damping Distributions for Vibrating Elements Using Algorithms,” Proceedings, ISMA23 Conference, Leuven, Belgium, pp. 1047–1054.
8.
Cant-Paz, E., Goldberg, D. E., Harik, G. R., and Miller, B. L., 1997, “The Gambler’s Ruin Problem, Genetic Algorithms, and the Sizing of Populations,” Proceedings, 1997 IEEE Conference on Evolutionary Computation, IEEE Press, New York, NY.
9.
Giguere, P., and Goldberg, D. E., 1998, “Population Sizing for Optimum Sampling with Genetic Algorithms: A Case Study of the Onemax Problems,” Proceedings, 3rd Annual Conference on Genetic Programming, San Francisco, CA.
10.
Levin, R. I., and Lievin, N. A. J., 1997, “Dynamic Finite Element Model Updating Using Simulated Annealing and Genetic Algorithms,” Proceedings, 15th International Modal Analysis Conference, Orlando, FL, pp. 1195–1201.
11.
Goldberg, D. E., 1989, Genetic Algorithms in Search Optimizations and Machine Learning, Addison-Wesley, New York, NY.
12.
Rivin, E. I., 1985, “Passive Engine Mounts—Some Directions for Further Developments,” SAE Paper #850481.
13.
Schmitt, R. V., and Leingang, C. J., 1976, “Design of Elastomeric Vibration Isolation Mounting Systems for Internal Combustion Engines,” SAE paper #760431.
14.
Swanson, D. A., Miller, L. R., and Norris, M. A., 1992, “Multi-dimensional Mount Effectiveness for Vibration Isolation,” AIAA/ASME/AHS/ASC, Proceedings, 33rd Conference on Structures, Structural Dynamics, and Materials, Dallas, TX.
15.
Zhu, J., Haghighi, K., and Krutz, G. W., 1988, “Dynamic Analysis of an Engine Chassis Mount Bracket Using the Finite Element Method,” SAE paper #881854.
16.
Heisler, H., 1999, “Vehicle and Engine Technology,” SAE Edition, Warrendale, PA.
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 by ASME
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