中文摘要：

通过对不同喷射距离的射流抛光实验,研究了喷射距离影响材料去除函数的复杂表现和机理。喷射距离对材料去除函数的影响主要表现在材料的去除率变化和去除范围变化,其中,喷射距离对冲击去除区和壁面磨蚀区的材料去除率的影响作用是不同的。基于冲击射流理论分析,引入修正因子,分别对壁面磨蚀区和冲击去除区的材料去除函数受喷射距离的影响作用进行了理论分析和模型构建,比较实验数据曲线和理论函数曲线,结果显示,理论模型和实验结果符合较好。在此基础上,对射流抛光的材料去除分布函数进行了修正。

英文摘要：

The behavior and mechanism of material removal influences of standoff distance were studied with fluid jet polishing experiments.There were two main effects due to standoff distance： material removal rate and removal region,and the effect of standoff distance on the removal rate in impinging region was different from that in wall jet region.In order to comprehend the relation between standoff distance and material removal,the removal mechanism and correlative theory were analyzed,and two functions with the standoff distance were established for impinging region′s and wall jet region′s material removal by adopting a correctional factor.The results show that the theoretical removal functions are in line with experiments data.Then the material removal distribution function is revised.