A Study on the Fracture Criterion of Composite Plates with Lateral Cutouts

• Main Authors: Ming-Chun Hsu, 徐銘俊
• Other Authors: Chung-Li Hwan
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/06737713015560654107

碩士 === 逢甲大學 === 機械工程學所 === 97 === This study uses the finite element software ANSYS, experiment and the spring model theory to investigate the fracture phenomenon of braided composite plates with lateral cutout. First, we calculate the engineering moduli of braided composite plates by means of the Spring Model Method. Secondly, by the use of those calculated engineering moduli and measured fracture strengths of braided composite plates with lateral cutout, ANSYS is applied to obtain the stress distribution around the cutout of braided composite plates with different radius. And, the average stress criterion is then employed to calculate the characteristic lengths for the composite plates with different size of hole. Finally, the functional relationships between characteristic length and radius of cutout are established by the least-square method. These functions are shown to be able to accurately predict the characteristic length of other composite plate with different size of hole experimentally.