Macroscopic strength and failure properties of flow-drill screw connections
Macroscopic strength and failure properties of flow-drill screw connections
复制标题
DOI：
10.1016/j.jmatprotec.2015.02.031
复制
发表时间：
2015-08
影响因子：
6.3
通讯作者：
Johan Kolstø Sønstabø;Petter Henrik Holmstrøm;D. Morin;M. Langseth
中科院分区：
文献类型：
--
作者：
Johan Kolstø Sønstabø;Petter Henrik Holmstrøm;D. Morin;M. Langseth
在各种准静态加载条件下，研究了使用流钻螺钉连接铝板的连接件的力-位移响应和破坏行为。这包括在拉伸、剪切以及拉伸和剪切组合载荷下的单连接器测试，在新的测试装置中使用交叉试样，以及剥离和单搭接接头测试。节点的强度随着剪切荷载的增加而增加，而延性则随着剪切荷载的增加而降低。没有影响的各向异性的片材上的行为，在单一的连接器tests. Axial破碎试验的铝单帽部分连接流钻螺钉也进行了。在这些测试中发现了在单连接器测试期间未观察到的两种连接失效模式。为了进行比较，对自冲铆钉连接进行了等效的单个连接器和组件试验。两种节点在延性、最大受力和力-位移曲线形状方面的变化趋势相似，但局部破坏模式不同。
Force–displacement responses and failure behaviour of connections using flow-drill screws to join aluminium sheets were investigated under various quasi-static loading conditions. This included single connector tests under tensile, shear and combined tensile and shear loadings, using cross test coupons in a new test set-up, and peeling and single lap-joint tests. The strength of the connection increased with the amount of shear loading, while the ductility decreased. No effect of the anisotropy of the sheets on the behaviour in the single connector tests was found. Axial crushing tests of aluminium single-hat sections joined with flow-drill screws were also performed. Two connection failure modes not observed during the single connector test were found in these tests. For comparison, equivalent single connector and component tests were carried out for self-piercing rivet connections. Similar trends with respect to the ductility, maximum force and shape of force–displacement curves were observed for the two connections, but the local failure modes were different.