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Damage Detection Using Finite Element Model Updating

유한요소 모델 개선기법을 이용한 손상추정

Min, Cheon-Hong;Choi, Jong-Su;Hong, Sup;Kim, Hyung-Woo;Yeu, Tae-Kyeong
민천홍;최종수;홍섭;김형우;여태경

  • Received : 2012.07.02
  • Accepted : 2012.10.08
  • Published : 2012.10.31

Abstract

In this study, a damage detection method that uses sensitivity-based finite (FE) element model updating with the natural frequency and zero frequency was proposed. The stiffness matrix for a structure was modified using the sensitivity-based FE model updating method. A sensitivity analysis was used to update the FE model, and the natural frequencies and zero frequencies were considered as target parameters to supplement the information on the vibration characteristics. The locations and values of the damages were estimated from the modified stiffness matrix. Several numerical examples were considered to verify the performance of the proposed method.

Keywords

FE model updating;Damage detection;Zero frequency;Riser

References

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Cited by

  1. Conceptual Design of a Riser for 10 MW OTEC vol.18, pp.1, 2015, https://doi.org/10.7846/JKOSMEE.2015.18.1.29
  2. Study on Damage Detection Method using Meta Model vol.29, pp.5, 2015, https://doi.org/10.5574/KSOE.2015.29.5.351

Acknowledgement

Grant : 심해저 광물자원 통합 채광시스템 개발 연구

Supported by : 국토해양부