强化喷射研磨接触区射流激波非均衡传播与互扰动效应抑制研究

对喷射研磨接触区中多相流激波非均衡传播与互扰动效应进行抑制是提高强化研磨效率和表面加工质量的必然途径和重要基础。以多相研磨射流介质为研究载体，基于激波矢量-速度同向理论模型探讨激波非均衡传播诱发条件及流体动力响应特征；在获得激波动态数据的基础上，对复杂多相流激波传播影响模式及其抑制流型进行构建和量化描述；建立研磨表面微观形貌变化对湍流激波传播形态的干扰作用模型，通过探索流场磨料质点动态运动刚度、接触区激波扰动边界条件、形貌几何参数弹性力学响应间量化关系，结合模糊集函数运算进行喷射流激波互扰动效应对研磨形貌的破坏效果评价以及提出其抑制策略。项目重点揭示了高强度加工负荷条件下射流激波非均衡传播诱发条件，提出其传播抑制方法及机理思路，同时在跨尺度条件下探讨激波互扰动效应与多相流形态间耦合作用规律，为其对研磨表面微观形貌的作用影响及抑制策略提供评价判据，并奠定复杂多相流机理研究创新理论和方法基础。

Inhibition research on the disequilibrium propagation and mutual disturbance effect of shock wave in the contact zone of strengthen jet flow grinding, proposes a necessary way and inevitable foundation for improving the performance efficiency of strengthen grinding and the finishing quality of machined surface. In this research, the medium of multiphase grinding flow was targeted to investigate the induced disequilibrium propagate condition of shock wave and the response characteristics of fluid dynamic power, with the help of a newly-proposed co-motion theoretical model operated between shock wave vector and flow velocity; Furthermore, based on the captured dynamic data of wave pattern, a series of quantitatively descriptions can be realized for the influential mode of shock wave propagation and the physical pattern of inhibition flow; Besides, a disturbance effect model will be established between the topographic variance of grinded surface and the propagation pattern of shock wave, through studying the interactive correlations among several participant influential factors, such as the dynamic motion stiffness of abrasive particles, the disturbance boundary conditions of shock wave in contact zone, and the mechanical responses characterized by the geometric parameters of machined topography, thereafter the topographic damage caused from the mutual-disturbance effect of shock wave in jet flow can be evaluated by calculating fuzzy set function, with the inhibition strategies of them will be proposed also. This research pays major attentions on the induced disequilibrium propagate conditions of shock wave in a high-pressure loading environment, as the method and mechanism of its inhibited propagation were specially focused, this research also paves a way for the coupling rules between the mutual disturbance effect of shock wave and the micro morphology of multiphase jet flow in a multi-scale condition simultaneously, which results to the provision of evaluation criterion for its influential effects and inhibition strategies in return. Thus an innovative theoretical foundation was established for the research developments on complex multiphase fluid eventually.