Analysis and Experiment of Composite I-Beams Under Three-Point Bending

• Main Authors: HUANG, KUAN-WEI, 黃冠惟
• Other Authors: HWANG, SHUN-FA
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/7dcw84

碩士 === 國立雲林科技大學 === 機械工程系 === 106 === In this study, the behavior of composite I beam under three-point bending is discussed numerically and experimentally. The composite I beams in this study are made of unidirectional prepreg. The focus is on the stacking angle in the laminate beam. The result of the experiment shows that the peak force of three-point bending decreases from 14476N to 13674N when the stacking angle is changed from [902/02/902/02]s to [452/-452/902/02]s. According this result, when the stacking angle of outer-most four layers is changed from [902/02] to [452/-452], the peak force of three-point bending will decrease slowly. Furthermore, finite element analysis is used to predict the behavior of the composite I beam under three-point bending and its peak force. The result shows that when the stacking angle is [902/02/902/02]s, the peak force of three-point bending is 12177N. When the stacking angle is [452/-452/902/02]s, the peak force of three-point bending is 11014N. The maximum relative error between the simulation and experiment is 15.8% when the stacking angle is [902/02/902/02]s. The maximum relative error between the simulation and experiment is 19.4% when the stacking angle is [452/-452/902/02]s.