Sharif University of Technology Scientia Iranica 1026-3098 Articles in Press 2024 11 19 Lateral Torsional and Longitudinal Buckling Analysis of Perforated Composite Plates 23746 10.24200/sci.2024.64130.8766 EN Ersin Demir Department of Mechatronics Engineering, Pamukkale University, Denizli, Turkiye Journal Article 2024 02 21 In this study, lateral and longitudinal buckling behaviors of perforated composite plates are investigated numerically. The composite plates are assumed to consist of two types of fabric, unidirectional and woven fabrics. The effects of changing the location, diameter and number of holes in the plate for unidirectional and woven fabric types on the lateral and longitudinal buckling strength are compared between the unperforated plate and each other. In addition, the effects of changing the fiber orientation angle on the lateral and longitudinal buckling load of the unidirectional fabric are also examined. Finally, the changes in the mode shape in two planes in lateral buckling and in a single plane in longitudinal buckling are shown, and the normalized amplitude change in the upper point of the free end of the plate is analyzed for different hole cases. In this study, the SolidWorks program is used for model design and the Simulation module of the SolidWorks program is used for numerical analysis. https://scientiairanica.sharif.edu/article_23746_ea1c35679221a367f4b76bdf05f25e4d.pdf