Nonlinear Dynamics of Structures with Material Degradation
Nonlinear Dynamics of Structures with Material Degradation
复制标题
材料降解结构的非线性动力学
DOI:
10.1088/1742-6596/744/1/012123
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
Soltani P
中科院分区:
文献类型:
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作者:
Soltani P
Structures usually experience deterioration during their working life. Oxidation, corrosion, UV exposure, and thermo-mechanical fatigue are some of the most well-known mechanisms that cause degradation. The phenomenon gradually changes structural properties and dynamic behaviour over their lifetime, and can be more problematic and challenging in the presence of nonlinearity. In this paper, we study how the dynamic behaviour of a nonlinear system changes as the thermal environment causes certain parameters to vary. To this end, a nonlinear lumped mass modal model is considered and defined under harmonic external force. Temperature dependent material functions, formulated from empirical test data, are added into the model. Using these functions, bifurcation parameters are defined and the corresponding nonlinear responses are observed by numerical continuation. A comparison between the results gives a preliminary insight into how temperature induced properties affects the dynamic response and highlights changes in stability conditions of the structure.
DOI:
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发表时间:
1991
期刊:
影响因子:
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作者:
C. Y. Yang;A. Cheng;R. Roy
通讯作者:
R. Roy
DOI:
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发表时间:
2004
期刊:
影响因子:
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作者:
K. Hedrih
通讯作者:
K. Hedrih
DOI:
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发表时间:
2005
期刊:
影响因子:
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作者:
K. Hedrih
通讯作者:
K. Hedrih