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首页> 外文会议>Fatigue and fracture mechanics XXV >Analysis of Strain Distribution in Notch Zone in Aluminium FSW Joints for Irregular Fatigue Loading Conditions
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Analysis of Strain Distribution in Notch Zone in Aluminium FSW Joints for Irregular Fatigue Loading Conditions

机译：不规则疲劳载荷条件下铝制FSW接头缺口区的应变分布分析

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摘要

Joining aluminium alloys with the use of welding techniques often impairs their strength properties and in some cases it is very difficult or even impossible. An alternative method for joining this type of material is friction welding including FSW welding. The airplane aluminium alloy 2024-T3 is an example of material that can be welded using this method. Heat emitted during the process, which contributes to the material plasticisation in the zones of welding, causes significant changes in the material structure, thus affecting the joint properties. Fatigue life calculations of this type of joint can be performed according to different approaches. One of them is a local approach which requires knowledge of local strains or stresses within the notch zone. This paper is a presentation of exemplary results of experimental and numerical tests of strain in the zone of notch that occur in a joint under time variable loading.
机译：使用焊接技术将铝合金连接起来通常会削弱其强度性能，在某些情况下这是非常困难的，甚至是不可能的。连接这种材料的另一种方法是摩擦焊接，包括FSW焊接。飞机铝合金2024-T3是可以使用此方法焊接的材料的示例。在此过程中散发的热量有助于焊接区域中的材料增塑，导致材料结构发生重大变化，从而影响接头性能。这种接头的疲劳寿命计算可以根据不同的方法进行。其中之一是局部方法，需要了解缺口区域内的局部应变或应力。本文介绍了在时变载荷下在接头中发生的缺口区域应变的实验和数值测试的示例性结果。

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