| 单晓杭,汪佳成,张利,叶必卿.基于湍流弥散模型的批量薄壁孔件抛光数值模拟与分析[J].高技术通讯(中文),2022,32(3):270~282 |
| 基于湍流弥散模型的批量薄壁孔件抛光数值模拟与分析 |
| Numerical simulation and analysis of batch thin-walled hole polishing based on turbulence dispersion model |
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| DOI：10.3772/j.issn.1002-0470.2022.03.006 |
| 中文关键词: 软性磨粒流; 湍流理论; 湍流弥散模型; 正交实验; 统计分析; 批量均匀抛光 |
| 英文关键词: soft abrasive flow, turbulence theory, turbulence dispersion model, orthogonal experiment, sta-tistical analysis, batch uniform polishing |
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| 中文摘要: |
| 本文提供了一种针对薄壁孔类零件均匀批量抛光的研究思路,采用数值模拟方法分析夹具的几何参数以及入口流速的改变对抛光效果的影响。 为了更好地模拟湍流场中颗粒的无序运动以及颗粒碰撞效果,本文提出一种基于线性同余法修正磨粒速度并结合 Tanaka 碰撞模型以及 Nanbu 算法计算粒子碰撞的湍流弥散模型。 通过 Minitab 软件对仿真结果进行统计学分析,研究不同参数的影响规律,并找出最优的参数组合。 从优化结果来看,PV 值均方差、PV 平均值和离散度均有明显改善。 |
| 英文摘要: |
| This article provides an idea for uniform batch polishing of thin-walled hole parts, and the influence of the fix-ture geometry parameters and inlet velocity on the polishing effect is analyzed by numerical simulation method. In order to better simulate the chaotic motion of particles in turbulent field and particle collision effect, a turbulence dispersion model is proposed to calculate particle collisions, in which the wear particle velocity is corrected by the linear congruential method, and Tanaka collision model and Nanbu algorithm are also employed in the model. Minitab software is used to analyze the simulation results statistically, by analyzing its influence rules of different parameters the optimal parameter combination is obtained. Optimization results show that the mean square error of the PKVevyalwueo,rdthse average value of the PV, and the degree of dispersion of PV values are all significantly improved. |
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