焊接摩擦过程对加劲板屈曲性能的影响作用分析

先进焊接方法的引进可视为对传统铆接工艺的一个替代方法,在生产中它可以减少制作成本并且减轻结构重量。然而,焊接过程会导致残余应力的产生和构件的扭转,以及焊接连接件的局部失效。本文旨在确定摩擦焊接组装方法对于加劲板强度性能的影响作用。通过试验验证的有限元分析证实,焊接导致的残余应力有很重要的影响,破坏行为及影响量级没有板的初始屈曲行为敏感。

The Characterisation of Friction Stir Welding Process Effects on StiffenedPanel Buckling Performance

The introduction of advanced welding methods aan alternative joining process to riveting in the manufacturof primary aircraft structure has the potential to realise re-ductions in both manufacturing costs and structural weightHowever, welding processes can introduce undesirable re-sidual stresses and distortions in the final fabricated compo-nents, as well as localised loss of mechanical properties athe weld joints. The aim of this research is to determine ancharacterise the key process effects of friction ...