Model Calibration and Validation for Material Damping Using Finite Element Analyses
Model Calibration and Validation for Material Damping Using Finite Element Analyses
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DOI：
10.1007/978-1-4614-2425-3_5
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发表时间：
2012-01
期刊：
影响因子：
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通讯作者：
Ryan A. Menefee;J. Rinker;P. Shin;P. Schembri;A. Siranosian
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文献类型：
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作者：
Ryan A. Menefee;J. Rinker;P. Shin;P. Schembri;A. Siranosian
有限元分析是一种强大的工程工具，可以深入了解实验可能无法准确得出的工程系统的行为。在这些分析中包含阻尼可以产生更准确的模型，但由于难以确定使用哪种阻尼模型以及模型的适当参数，阻尼常常被忽略。本研究探讨了物理阻尼与其在 Abaqus 中的实现之间的关系，重点研究不同阻尼模型的不同效果。研究的三个阻尼模型是质量比例、刚度比例和粘弹性。使用来自简单“校准结构”的实验数据针对特定材料校准模型参数。通过将由相同材料制成的更复杂的“验证结构”的实验结果与使用校准阻尼参数生成的模拟结果进行比较，完成了对模型有效性的初步测试。
Finite element analyses are a powerful engineering tool that can yield insight into the behavior of engineering systems that experimentation may not accurately yield. Including damping in these analyses can yield more accurate models, but damping is often neglected due to difficulties in determining which damping model to use, and the appropriate parameters for the models. This research explored the relationship between physical damping and its implementation in Abaqus, with a focus on investigating the different effects of different damping models. The three damping models investigated were mass-proportional, stiffness-proportional, and viscoelastic. The parameters of the models were calibrated for a particular material with experimental data from a simple “calibration structure.” Preliminary testing on the validity of the models was completed by comparing experimental results of a more complex “validation structure,” made of the same material, with simulation results generated using the calibrated damping parameters.