A Study and Prediction on the Notched Strength of Hybrid Composite Plates with Different Woven Fabric

• Main Authors: Yi-Jheng Jhou, 周益正
• Other Authors: Chung-Li Hwan
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/71184991787718369335

碩士 === 逢甲大學 === 機械與電腦輔助工程學系 === 101 === The aim of this thesis is to simulate, predict and analyze the notched fracture strength of hybrid composite plates with different woven Fabric on the surface layer by Point Stress Criterion and Finite Element Software ANSYS. A modified point stress criterion (PSC) was adopted to predict the strength of notched plate in this study. First, the effective elastic moduli of specimens were predicted by stiffness averaging method. Those moduli were then put into ANSYS for analyzing the stress distribution in the notched plate. The characteristic length of each plate was then figured out by modified PSC, and the power law relationship between the characteristic length and the ratio of hole diameter to specimen width was also established. The characteristic length of different hole diameter can thus be predicted. Employing the theory of superposition in linear elasticity and the predicted characteristic length, the notched strength of woven hybrid composite plates were finally predicted and compared to experimental data. The results indicate that the notched strength of woven hybrid composite plates can be accurately predicted by the methodology in this study, and the error between the predicted value and its corresponding experimental data is within 3 %.