摘要
对柔性经编金属网眼织物进行预置中心切口处理(切口形式包括横向、斜向、纵向),并在低速拉伸条件下对其拉伸性能进行测试.对切口试样的破坏过程和拉伸负荷-伸长曲线进行对比分析,并在不同切口形式下,研究试样的切口敏感性.试验结果表明:预置切口的引入明显地劣化了金属网眼织物的力学性能;柔性经编金属网眼织物对横向切口具有较强的切口敏感性,对斜向和纵向切口不敏感,这是因为切口试样在拉伸过程中的"束腰"现象弱化了这两种切口形式的应力集中.
Notches on the center of flexible warp knitting metal mesh were preset （three directions include horizontal, diagonal and vertical） and the mesh＇s tensile property was tested in a low speed loading. The fracture process and tensile curves of the metal mesh were investigated as well as sensitivity of the notch in forms of different notch. The result showed that preset notch significantly degraded the mechanical properties of the metal mesh. The breakage of flexible warp knitting metal mesh was sensitive to the horizontal notch, while not sensitive to the diagonal and vertical notch. The reason was the ＂waist＂ phenomenon during tension could weaken the concentration of stress in the form of diagonal and vertical notch.
出处
《东华大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第1期17-21,42,共6页
Journal of Donghua University(Natural Science)
基金
上海市优秀学术带头人计划资助项目(12XD1400400)
中央高校基本科研业务费专项资金资助项目(13D110126)
东华大学青年教师科研启动资助项目(101-07-0053012)
东华大学硕士研究生学位论文创新资助项目(EG2013002)
关键词
柔性经编
金属网眼织物
拉伸性能
切口敏感性
预置切口
flexible warp knitting
metal mesh
tensile performance
notch sensitivity
preset notch
