ABSTRACT

In applications such light train application, sandwich materials require mechanical joints. One major load produced at the mechanical joining is the pull-out load. The scope of this literature review includes pull-out test results, failure mode during the pull-out test, failure load parameters, and an analytical method to determine the maximum pull-out load. The pull-out resistance of the mechanical joint on sandwich material is determined by the failure load and the maximum load. The failure modes on sandwich material include core buckling, shear cracking, tensile rupture and delamination. The failure load of mechanical joints on the sandwich material will increase as insert depth, insert diameter, core thickness and core density increase. Meanwhile, two analytical methods (Aerospace Engineering and Zenkert Methods) are studied, and it is found that the Aerospace Engineering is more accurate. The multiplier for the maximum load value has been found to determine the failure load.

摘要

在轻型列车等应用中，夹层材料需要机械接头。机械连接处产生的一种主要载荷是拉出载荷。本文献综述的范围包括拉出试验结果、拉出试验期间的失效模式、失效载荷参数以及确定最大拉出载荷的分析方法。夹层材料机械接头的拉出阻力由失效载荷和最大载荷决定。夹层材料的失效模式包括芯部屈曲、剪切开裂、拉伸断裂和分层。机械接头在夹层材料上的失效载荷将随着插入深度、插入直径、芯厚度和芯密度的增加而增加。同时，研究了两种分析方法（航空航天工程和曾克特方法），发现 Aerospace Engineering 更准确。已找到最大载荷值的乘数来确定失效载荷。