Nonlinear Modeling and Identification of an Aluminum Honeycomb Panel with Multiple Bolts
This paper focuses on the nonlinear dynamics modeling and parameter identification of an Aluminum Honeycomb Panel (AHP) with multiple bolted joints. Finite element method using eight-node solid elements is exploited to model the panel and the bolted connection interface as a homogeneous, isotropic p...
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2016-01-01
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Series: | Shock and Vibration |
Online Access: | http://dx.doi.org/10.1155/2016/1276753 |
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doaj-05828b650ce14fe7bff66894756a6dd82020-11-24T22:52:38ZengHindawi LimitedShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/12767531276753Nonlinear Modeling and Identification of an Aluminum Honeycomb Panel with Multiple BoltsYongpeng Chu0Hao Wen1Ti Chen2State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing, Jiangsu 210016, ChinaState Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing, Jiangsu 210016, ChinaState Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing, Jiangsu 210016, ChinaThis paper focuses on the nonlinear dynamics modeling and parameter identification of an Aluminum Honeycomb Panel (AHP) with multiple bolted joints. Finite element method using eight-node solid elements is exploited to model the panel and the bolted connection interface as a homogeneous, isotropic plate and as a thin layer of nonlinear elastic-plastic material, respectively. The material properties of a thin layer are defined by a bilinear elastic plastic model, which can describe the energy dissipation and softening phenomena in the bolted joints under nonlinear states. Experimental tests at low and high excitation levels are performed to reveal the dynamic characteristics of the bolted structure. In particular, the linear material parameters of the panel are identified via experimental tests at low excitation levels, whereas the nonlinear material parameters of the thin layer are updated by using the genetic algorithm to minimize the residual error between the measured and the simulation data at a high excitation level. It is demonstrated by comparing the frequency responses of the updated FEM and the experimental system that the thin layer of bilinear elastic-plastic material is very effective for modeling the nonlinear joint interface of the assembled structure with multiple bolts.http://dx.doi.org/10.1155/2016/1276753 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yongpeng Chu Hao Wen Ti Chen |
spellingShingle |
Yongpeng Chu Hao Wen Ti Chen Nonlinear Modeling and Identification of an Aluminum Honeycomb Panel with Multiple Bolts Shock and Vibration |
author_facet |
Yongpeng Chu Hao Wen Ti Chen |
author_sort |
Yongpeng Chu |
title |
Nonlinear Modeling and Identification of an Aluminum Honeycomb Panel with Multiple Bolts |
title_short |
Nonlinear Modeling and Identification of an Aluminum Honeycomb Panel with Multiple Bolts |
title_full |
Nonlinear Modeling and Identification of an Aluminum Honeycomb Panel with Multiple Bolts |
title_fullStr |
Nonlinear Modeling and Identification of an Aluminum Honeycomb Panel with Multiple Bolts |
title_full_unstemmed |
Nonlinear Modeling and Identification of an Aluminum Honeycomb Panel with Multiple Bolts |
title_sort |
nonlinear modeling and identification of an aluminum honeycomb panel with multiple bolts |
publisher |
Hindawi Limited |
series |
Shock and Vibration |
issn |
1070-9622 1875-9203 |
publishDate |
2016-01-01 |
description |
This paper focuses on the nonlinear dynamics modeling and parameter identification of an Aluminum Honeycomb Panel (AHP) with multiple bolted joints. Finite element method using eight-node solid elements is exploited to model the panel and the bolted connection interface as a homogeneous, isotropic plate and as a thin layer of nonlinear elastic-plastic material, respectively. The material properties of a thin layer are defined by a bilinear elastic plastic model, which can describe the energy dissipation and softening phenomena in the bolted joints under nonlinear states. Experimental tests at low and high excitation levels are performed to reveal the dynamic characteristics of the bolted structure. In particular, the linear material parameters of the panel are identified via experimental tests at low excitation levels, whereas the nonlinear material parameters of the thin layer are updated by using the genetic algorithm to minimize the residual error between the measured and the simulation data at a high excitation level. It is demonstrated by comparing the frequency responses of the updated FEM and the experimental system that the thin layer of bilinear elastic-plastic material is very effective for modeling the nonlinear joint interface of the assembled structure with multiple bolts. |
url |
http://dx.doi.org/10.1155/2016/1276753 |
work_keys_str_mv |
AT yongpengchu nonlinearmodelingandidentificationofanaluminumhoneycombpanelwithmultiplebolts AT haowen nonlinearmodelingandidentificationofanaluminumhoneycombpanelwithmultiplebolts AT tichen nonlinearmodelingandidentificationofanaluminumhoneycombpanelwithmultiplebolts |
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1725665360687923200 |