Experiments and simulations of the mechanical performance of repaired panels |
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| Affiliation: | 1. School of Mechanic, Civil Engineering and Architecture, Northwestern Polytechnic University, Xi’an 710072, PR China;2. Department of Mechanical Engineering, Zhenzhou Institute of Aeronautical Industry Management, Zhengzhou 450015, PR China;1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130021, PR China;2. Department of Precision Machinery and Precision Instrumentation, School of Engineering Science, University of Science and Technology of China, Hefei 230036, PR China;3. Institute of Structural Mechanics, China Academy of Engineering Physics, Mianyang, Sichuan 621900, PR China;1. Department of Mechanics, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, PR China;2. College of Computer Science and Technology, Beijing Jiaotong University, Beijing 100044, PR China |
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| Abstract: | Firstly, the compress experiment is undertaken to investigate the efficiency of repaired panels in this paper, and then modeling of the mechanical behavior of the repaired composite panel under compressive static load is conducted by using of the finite element method. The effect of geometric non-linearity on the stress–strain response is considered in the numeric analysis. Fatherly, the user material subroutine (UMAT) is integrated with the ABAQUS package with the geometric non-linearity effect for studying the damage initiation and its progression in the composite structure, and quadrilateral, linear, thick shell elements (S8R) are adopted. Finally, the predicted strain distribution, damage evolution and strength of the laminate are compared with the test results. |
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