A global bolted joint model for finite element analysis of load distributions in multi-bolt composite joints |
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| Authors: | PJ Gray CT McCarthy |
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| Affiliation: | 1. Key Lab. for Precision and Non-traditional Machining Technology of Ministry of Education, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China;2. School of Automotive Engineering, Dalian University of Technology, Dalian 116024, China;3. Shanghai Aircraft Manufacturing Co. Ltd., Shanghai 200120, China;1. School of Astronautics, Beihang University, Beijing 100191, PR China;2. College of Aerospace Engineering, Chongqing University, Chongqing 400044, PR China |
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| Abstract: | This paper presents the development and validation of a global bolted joint model (GBJM), a highly efficient modelling strategy for bolted composite joints. Shell elements are used to model the composite laminates and the bolt is represented by a combination of beam elements coupled to rigid contact surfaces. The GBJM can capture effects such as bolt–hole clearance, bolt-torque, friction between laminates, secondary and tertiary bending in the laminates as well as the load distribution in multi-bolt joints. The GBJM is validated using both three-dimensional finite element models and experiments on both single- and multi-bolt joints. The GBJM was found to be robust, accurate and highly efficient, with time savings of up to 97% realised over full three-dimensional finite element models. |
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