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Thermal-mechanical coupled simulation on residual stress and distortion of high-strength aluminum alloy sheet after friction stir welding
Authors
于涛
张会杰
+4 more
张骁
朱智
杨广新
王敏
Publication date
1 January 2017
Publisher
Abstract
针对航空领域中常用的7B04高强铝合金,基于剪切摩擦生热理论,建立了适用于薄板搅拌摩擦焊(FSW)过程的自适应热源模型,利用有限元软件MSC.Marc建立了FSW过程的热力耦合有限元模型,并通过子程序二次开发,将建立的热源模型载入到有限元模型中,对7B04铝合金薄板的FSW过程进行瞬态热力耦合模拟。预测并分析了FSW过程中铝合金板材内部的温度分布与演化、焊接接头附近区域的残余应力分布及板材的最终变形情况,通过开展FSW工艺试验从温度场和残余应力两方面对模型的可靠性和模拟结果的准确性进行了验证。此外,利用经过验证的有限元模型对搅拌头机械载荷在残余应力和变形中的影响作用进行了深入分析
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Institutional Repository of Institute of Automation, CAS
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Last time updated on 12/08/2017
Shenyang Institute of Automation,Chinese Academy Of Sciences
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ir.sia.cn/:173321/20380
Last time updated on 12/02/2018