Modal Parameter Simulation and Model Updating for some Launch Platform

Chang Lin Hu; Li Yuan Ma; Yong Jun Li; Hui Li

doi:10.4028/www.scientific.net/AMR.490-495.1009

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 490-495Modal Parameter Simulation and Model Updating for...

Modal Parameter Simulation and Model Updating for some Launch Platform

Abstract:

The frequencies and vibration modes of a launch platform are acquired through finite element simulation, and their actual values are obtained through modal test. On this basis, constructing objective function for the structure modal parameter relative residual error to be minimum, can transform model updating problem into optimization problem. Then the trust region algorithm is adopted to solve this optimization problem. This algorithm bears better robustness and computing efficiency. Through model updating, the frequency and vibration mode errors are reduced, supplying a basis for further simulation.

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Periodical:

Advanced Materials Research (Volumes 490-495)

Pages:

1009-1013

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.490-495.1009

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Online since:

March 2012

Authors:

Chang Lin Hu, Li Yuan Ma, Yong Jun Li, Hui Li

Keywords:

Finite Element, Launch Platform, Model Updating, Optimization, Trust Region

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