Deformation Characteristics and Delamination Strength of Adhesively Bonded Aluminium Alloy Sheet under Plastic Bending
Deformation Characteristics and Delamination Strength of Adhesively Bonded Aluminium Alloy Sheet under Plastic Bending
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粘结铝合金板塑性弯曲变形特性及分层强度
DOI：
10.1299/jsmea.46.68
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
F. Yoshida
中科院分区：
文献类型：
--
作者：
M. Takiguchi;F. Yoshida
冲压成形的金属薄板零件通常在装配的最后阶段粘合在一起。研究了一种新的板材冲压成形工艺，取代了传统的冲压成形工艺。在这一过程中，首先将平板粘合在一起，然后压成最终形状。通过对粘接铝合金板材的V型弯曲试验，发现粘结层在弯曲过程中发生了较大的剪切变形，在某些情况下会导致分层。从实验观察和数值模拟两个方面得出结论：采用足够大跨度的空气弯曲，而不是模具接触的V型弯曲，可以抑制胶层的大剪切变形。
Press-formed sheet metal parts are usually adhesively bonded together at the final stage of assembly. Instead of such a conventional process, a new technique of press-forming of adhesively bonded sheet metals was investigated. In this process, first flat sheets are adhesively bonded, and then press-formed into final shapes. From V-bending experiments on adhesively bonded aluminium alloy sheets, it was found that large shear deformation occurred in the adhesive layer during the bending, which in some cases lead to the delamination. Both from the experimental observations and numerical simulation, it is concluded that the large shear deformation of the adhesive layers can be suppressed when performing air-bending of enough long span, rather than die-contact V-bending.