【作者】 周新晶； 唐经文； 周菁； 王锋；

【Author】 ZHOU Xin-jing,TANG Jing-wen,ZHOU Jing,WANG Feng (College of Power Engineering,Chongqing University,Chongqing 400044,China)

【机构】 重庆大学动力工程学院；

【摘要】 利用非线性有限元分析软件ANSYS/LSDYNA,通过模拟几种不同材料的单颗冷喷涂粒子与基体的碰撞过程,分析了材料特性对粒子和基体变形的影响;此外还通过改变粒子入射角度分析了冷喷涂颗粒与基体非垂直碰撞的过程,研究其对粒子和基体的变形影响以及碰撞过程中塑性应变。模拟结果表明:粒子和基体的材料性质是影响涂层形成过程中的重要因素,选择与基体材料性质类似的颗粒,可达到更好的喷涂效果;而非垂直碰撞过程中,粒子入射速度的法向分量对碰撞过程和粒子沉积起到非常重要的作用。更多还原

【Abstract】 In this paper,the deposition process of single powder particle on the substrate was simulated by nonlinear finite element software ANSYS/LS-DYNA.The effect of material property on the impact process of the particle was studied.And the spraying angle on the deposition was also discussed.Results showed that material properties of both particle and substrate have an important effect on the coating formation.It is better for the coating formation with the similar property of the feedstock and substrate.And the vertical component of impact velocity takes an important role in the impacting process and formation of bonding under oblique collision.更多还原