Analytical and experimental investigations into active control of wave transmission through gearbox struts

Ion Pelinescu; Balakumar Balachandran

doi:10.1117/12.388866

22 June 2000 Analytical and experimental investigations into active control of wave transmission through gearbox struts

Ion Pelinescu, Balakumar Balachandran

Proceedings Volume 3985, Smart Structures and Materials 2000: Smart Structures and Integrated Systems; (2000) https://doi.org/10.1117/12.388866
Event: SPIE's 7th Annual International Symposium on Smart Structures and Materials, 2000, Newport Beach, CA, United States

Abstract

Experimental and analytical investigations conducted into active control of longitudinal and flexural waves transmitted through a cylindrical gearbox strut are presented in this article. The development of an experimental model of a finite length active cylindrical strut instrumented with sensors, piezoelectric, and magnetostrictive actuators is described. The strut is included in an experimental arrangement where vibratory loads are applied along the strut's longitudinal and transverse directions while it is subjected to an axial static loading. Modal analysis studies are carried out in the frequency range of 10 Hz to 5 kHz with a finite element model of the cylindrical strut and the experimental model. During wave transmission through the strut, coupling between different types of modes is predicted by analysis and observed in the experiments. Actuator and sensor systems issues are discussed with relevance for control of vibrations transmitted through helicopter gearbox struts.

Citation Download Citation

Ion Pelinescu and Balakumar Balachandran "Analytical and experimental investigations into active control of wave transmission through gearbox struts", Proc. SPIE 3985, Smart Structures and Materials 2000: Smart Structures and Integrated Systems, (22 June 2000); https://doi.org/10.1117/12.388866

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