| 雷振坤*,周降龙.压缩剪切测试中载荷传递行为的数字光弹性研究[J].实验力学,2010,25(4):379~385 |
| 压缩剪切测试中载荷传递行为的数字光弹性研究 |
| Study of Load Transfer in Compression Shear Test based on Digital Photoelasticity |
| 投稿时间：2010-02-28 修订日期：2010-04-18 |
| DOI： |
| 中文关键词: 压缩剪切测试 层间剪切 应力传递 数字光弹性 |
| 英文关键词:compressive shear test interlaminar shear load transfer digital photoelasticity |
| 基金项目:国家自然科学基金项目(10972047)和工业装备结构分析国家重点实验室项目 |
|
| 摘要点击次数: 418 |
| 全文下载次数: 315 |
| 中文摘要: |
他在实验力学测试技术的发展方面，以及在解决国家重要工程问题方面，都作出了突出的贡献，并多次获奖。他所领导的天津大学实验力学学科成为我国第一个实验力学博士点。他学识渊博，宽厚待人，在培养年轻学子和提携后辈方面，为大家树立了榜样，得到几代实验力学工作者的尊敬。
|
| 英文摘要: |
| An improved six-step phase-shifting method was proposed to calculate the full-field shear stress based on a four-step color phase-shifting method in digital photoelasticity. This method was verified by radial compression of a disk, then further study of interlaminar shear behavior in compressive shear test for connection structure made of homogeneity material was carried out. Experimental results reveal that isochromatic fringe order and shear stress are distributed continuously and increased with compression increasing. However, shear stress goes to zero and isochromatic fringe order decreases to valley-bottom at midline of the specimen. They reach peaks at two compressive shear sections, and especially the maximum values appear at four right-angle edges. It means that the cracking would be happened firstly at those edges. Under the load of 705.6N, the fringe peaks and shear stresses at right-angle edges reach to 3.5 orders and 2.4MPa, respectively. Stress transfer in a connection structure is mainly realized by interlaminar shear, while shear stress is basically balanced with the applied load at connection interface. |
| 查看全文 下载PDF阅读器 |
| 关闭 |
