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Volume 1, Number 1, June 2019 , pages 71-90 DOI: https://doi.org/10.12989/cme.2019.1.1.071 |
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Length effect on the stress concentration factor of a perforated orthotropic composite plate under in-plane loading |
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Nima Bakhshi and Fathollah Taheri-Behrooz
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| Abstract | ||
| In this manuscript, a comprehensive numerical analysis is conducted to assess the accuracy of the Tan's model of obtaining the stress concentration factor, for a plate with finite dimensions containing an open hole. The influence of plate length on the stress distribution around the hole is studied. It is demonstrated that the plate length has a significant impact on the degree of accuracy of the method. Therefore, a critical length is proposed for this approach. Critical length is defined as the minimum length the plate requires, to ensure that the SCF which is obtained from the Tan's model will have sufficient accuracy. Finally, the approach of finite-width correction factor is adapted to develop a new model which is applicable for plates under biaxial loading conditions. In this method, biaxial loading is considered as a dominant axial force along the x-direction and lambda times the load (-1<= lambda <=1), along the y-direction. A comparison between the SCFs obtained from the proposed analytical method and the SCFs obtained from the extensive FE studies, revealed an excellent agreement when the plate-width to hole-diameter ratio is more than 3 and the lambda is between -0.5 and 1. | ||
| Key Words | ||
| stress concentration factor (SCF); composite plate; circular hole; correction factors; finite element analysis | ||
| Address | ||
| School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, 16846-13114, Iran | ||
