Research on Finite Element Model Updating in the High-Temperature Environment Based on the Global Approximate Function

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (19) : 145-150.

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Research on Finite Element Model Updating in the High-Temperature Environment Based on the Global Approximate Function

He Cheng, He Huan, Chen Guoping

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Abstract

In this paper，a method have been proposed to investigate the problem of finite element model updating in the high-temperature environment using the global approximate function. In this method the temperature field of the structures has been updating as the first stage, which is taken into the structures dynamic model as initial conditions. Then it has finished the whole updating process, an application example-a wing finite element model is implemented with this method. The results from this new method are compared with those obtained from the traditional model updating methods, which show that model using the classification method can significantly improve the model updating efficiency and precision.

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high-temperature environment / model updating / global approximate function / dynamics

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He Cheng;He Huan;Chen Guoping . Research on Finite Element Model Updating in the High-Temperature Environment Based on the Global Approximate Function[J]. Journal of Vibration and Shock, 2012, 31(19): 145-150