NUMERICAL STUDY OF EFFECT OF FLANK WEAR ON HEAT TRANSFER ABILITY IN HIGH-SPEED ULTRASONIC VIBRATION CUTTING INTERFACES

IF 0.6 Q4 ENGINEERING, MECHANICAL MM Science Journal Pub Date : 2023-11-15 DOI:10.17973/mmsj.2023_11_2023107
Xiangyu Zhang, Dongyue Wang, Zhenlong Peng
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Abstract

High-speed ultrasonic vibration cutting shown great advantages by cutting temperature reduction due to periodic opened cutting interfaces for direct heat convection with coolants. To figure out accurate heat transfer ability, a 2-dimensional simplified model was developed and computational fluid dynamics (CFD) was used to calculate heat flux and Nusselt number. Three flank wear lengths for initial, initial-stable transition and stable stages were chosen and comparisons made between CFD results and wear progresses indicated that heat transfer ability demonstrated better performance during the stable wear stage at low cutting speed. As cutting speed increased the effect of ultrasonic vibration was weakened.
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高速超声振动切削界面齿面磨损对传热能力影响的数值研究
高速超声振动切割由于与冷却剂直接热对流的周期性开放切割界面而降低切割温度,显示出巨大的优势。为了精确计算传热能力,建立了二维简化模型,并利用计算流体力学(CFD)计算热流密度和努塞尔数。选择了初始、初稳过渡和稳定阶段的3种翼面磨损长度,并将CFD结果与磨损过程进行了比较,结果表明,在低切削速度的稳定磨损阶段,换热能力表现得更好。随着切削速度的增加,超声振动的作用减弱。
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来源期刊
MM Science Journal
MM Science Journal ENGINEERING, MECHANICAL-
CiteScore
1.30
自引率
42.90%
发文量
96
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