刘石柏,刘继常,齐利军,卢娟华

• 1:湖南大学汽车车身先进设计制造国家重点实验室
• 2:湖南水利水电勘测设计研究总院

摘要(Abstract)：

运用光滑粒子流体动力学(smoothed particles hydrodynamics,SPH)法建立了激光熔凝过程的数值模型。并应用该模型对AISI304不锈钢的激光熔凝过程进行数值模拟,分析在不同激光功率和扫描速度下对熔池速度场、温度场及其宽度和深度的影响。结果表明:熔池的最高温度相对激光光斑中心偏移一定的距离,且偏移距离随扫描速度的增加而增大,但随激光功率的增加则保持不变。同时也为研究激光熔覆的自由表面形貌的形成过程提供SPH理论基础和数值分析方法。

关键词(KeyWords)： 光滑粒子流体动力学法;激光熔凝;数值模型;偏移距离

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(751215068)

作者(Author): 刘石柏,刘继常,齐利军,卢娟华

DOI: 10.13289/j.issn.1009-6264.2017.01.030

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