Topology optimization of a plate coupled with acoustic cavity

W. Akl; A. El-Sabbagh; K. Al-Mitani; A. Baz

doi:10.1117/12.776435

18 April 2008 Topology optimization of a plate coupled with acoustic cavity

W. Akl, A. El-Sabbagh, K. Al-Mitani, A. Baz

Proceedings Volume 6928, Active and Passive Smart Structures and Integrated Systems 2008; 692811 (2008) https://doi.org/10.1117/12.776435
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

Abstract

Optimization of the topology of a plate coupled with an acoustic cavity is presented in an attempt to minimize the fluid-structure interactions at different structural frequencies. A mathematical model is developed to simulate such fluid-structure interactions based on the theory of finite elements. The model is integrated with a topology optimization approach which utilizes the Moving Asymptotes Method. The obtained results demonstrate the effectiveness of the proposed approach in simultaneously attenuating the structural vibration and the sound pressure inside the acoustic domain at several structural frequencies by proper redistribution of the plate material. The presented topology optimization approach can be an invaluable tool in the design of a wide variety of critical structures which must operate quietly when subjected to fluid loading.

Citation Download Citation

W. Akl, A. El-Sabbagh, K. Al-Mitani, and A. Baz "Topology optimization of a plate coupled with acoustic cavity", Proc. SPIE 6928, Active and Passive Smart Structures and Integrated Systems 2008, 692811 (18 April 2008); https://doi.org/10.1117/12.776435

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