Finite Element Modeling for Static and Dynamic Analysis of Structures with Bolted Joint

Abstract:

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.

• Periodical: Key Engineering Materials (Volumes 306-308)
• Pages: 547-552
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.306-308.547
• Online since: March 2006
• Authors: Young Doo Kwon, Hyun Wook Kwon, Ji-Hoon Hwangbo, Suck Ho Jang
• Keywords: Bolted Joint, Finite Element Model (FEM), Practical Model, Preload, Stick Friction

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