期刊
APPLIED MATHEMATICAL MODELLING
卷 31, 期 5, 页码 895-911出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.apm.2006.03.020
关键词
FEM pretension; bolted joint; contact element; structural analysis; marine diesel engine
In this work, in order to investigate a modeling technique of the structure with bolted joints, four kinds of finite element models are introduced; a solid bolt model, a coupled bolt model, a spider bolt model, and a no-bolt model. All the proposed models take into account pretension effect and contact behavior between flanges to be joined. Among these models, the solid bolt model, which is modeled by using 3D solid elements and surface-to-surface contact elements between head/ nut and the flange interfaces, provides the best accurate responses compared with the experimental results. In addition, the coupled bolt model, which couples degree of freedom between the head/nut and the flange, shows the best effectiveness and usefulness in view of computational time and memory usage. Finally, the bolt model proposed in this study is adopted for a structural analysis of a large marine diesel engine consisting of several parts which are connected by long stay bolts. (c) 2006 Elsevier Inc. All rights reserved.
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