Finite Element Modeling for Static and Dynamic Analysis of Structures with Bolted Joint
Finite Element Modeling for Static and Dynamic Analysis of Structures with Bolted Joint
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DOI：
10.4028/www.scientific.net/kem.306-308.547
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发表时间：
2006-01
期刊：
影响因子：
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通讯作者：
Young-Doo Kwon;Hyun-Wook Kwon;Ji-Hoon Hwangbo;S. Jang
中科院分区：
文献类型：
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作者：
Young-Doo Kwon;Hyun-Wook Kwon;Ji-Hoon Hwangbo;S. Jang
为了准确预测螺栓连接的性能，需要详细的三维建模，考虑接触摩擦，预载荷和接头的非线性行为。然而，由于复杂的形状，带有间隙元素的详细模型不能确保收敛，并且它不适合于动态分析。因此，本文提出了螺栓连接结构的三种模型：（1）详细模型，（2）实用模型，（3）简单模型，可根据分析目的选择。通过使用应变片的静态实验，验证了详细模型的准确性，并将模态测试结果与简单模型的结果进行了比较，以确认其在动态分析中的有效性。在使用简单模型进行静态分析的情况下，对于距离螺栓中心2.5d的部分，分析结果与详细模型的分析结果几乎一致。在所提出的模型中，简单模型的自由度最小，所需的内存比详细模型少59%。
To predict the accurate behavior of bolted joints, detailed 3-D modeling is needed that considers the contact friction, preload, and nonlinear behavior of joints. However, a detailed model with gap elements cannot ensure convergence due to the complicated shape, plus it is inappropriate for a dynamic analysis. Accordingly, this paper suggests three kinds of model for structures with bolted joints: (1) detailed model, (2) practical model, and (3) simple model, which can be selected based on the purpose of the analysis. Through a static experiment using a strain gauge, the accuracy of the detailed model was verified, and the results of a modal test compared with the results of the simple model to confirm its effectiveness in a dynamic analysis. In the case of a static analysis using the simple model, the analysis results almost corresponded with those of the detailed model for a part 2.5d away from the center of the bolt. Among the proposed models, the simple model has the least degree of freedom and requires 59% less memory than the detailed model.