一种多层结构在冲蚀磨损中的数值研究  

作　　者：刘鑫 徐中[1] 

机构地区：[1]大连理工大学机械工程学院

出　　处：《内燃机与配件》2019年第21期10-14,共5页Internal Combustion Engine & Parts

摘　　要：本文设计了一种针对冲蚀磨损的解决方案.利用多层材料的不同性能,达到减少冲蚀磨损的效果,这种结构具有一定的主动减摩性能.在不同的冲蚀条件下进行了仿真模拟,主要针对不同冲蚀速度进行研究,并且获得了较好的冲蚀磨损率.对于数值模拟,在计算流体动力学框架内采用了离散经验模型和用于材料侵蚀的Oka模型,仿真研究表明,这种多层材料在冲蚀速率100m/s以内的磨损率最多可以达到1.2×10-5kg/m2·s-1,具有良好的抗冲蚀磨损特性.In this paper,we design a solution to erosion wear,which is reduced by using the different properties of multilayer materials,and has a performance of active anti-erosion.In this paper,simulations are carried out under different erosion factors,which mainly contain the erosion speed,and the better erosion reduction rate is obtained.For numerical modeling,the Discrete Empirical Model and Oka's model applied to material erosion are employed within the computational fluid dynamics framework.The results of simulation show that the multilayer material has a good performance on erosion reduction,and its erison rate can be up to 1.2×10^-5kg/m2·s^-1 within the rate of 100m/s.

关 键 词：多层材料 冲蚀 主动 流体动力学 

分 类 号：TG1[金属学及工艺—金属学]