基于一维梁理论模型的金属单搭粘接贴片接头强度分析

摘要： 为了提高单搭粘接接头的强度，基于Goland和Reissner的一维梁理论模型，设计了单搭粘接贴片接头；对铝合金5052(AA5052)单搭粘接接头、AA5052单搭粘接贴铝片接头和AA5052单搭粘接贴铜片接头进行了拉伸 剪切试验，并通过有限元数值模拟获得3种接头破坏位置附近胶层的应力分布情况.结果表明：随着搭接端部刚度的增大，单搭粘接接头的强度逐渐增大，胶层中间部分的应力变化逐渐趋于平缓；与AA5052单搭粘接接头相比，AA5052单搭粘接贴铝片接头的强度提高了3.8%，AA5052单搭粘接贴铜片接头的强度提高了4.9%，从而验证了采用单搭粘接贴片接头的方法具有较好的可行性和有效性.

Analysis of Strength of Adhesive Bonding of Single Lap Joints of Metal with Reinforcements Based on One-Dimensional Beam Theory

Abstract： In order to enhance the strength of adhesive bonding of single lap joints (SLJs), the adhesive bonding of SLJ with reinforcements was designed based on Goland and Reissner’s one dimensional beam theory model. The adhesive bonding of SLJs whose adherends were aluminum alloy 5052 (Al5052), Al5052 with pasting aluminum and Al5052 with pasting copper were separately tested under tension shear loading, and stress distributions were acquired by means of finite element analysis. The results show that the strength of joints and the state of stress in the adhesive layer are influenced by the stiffness at the end of the overlap region. The strength of adhesive bonding of SLJ whose adherend is Al5052 with pasting copper is stronger than that of other kinds of joints. The feasibility and validity of adhesive bonding of SLJ with reinforcements are verified by these analysis results.
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