基于細(xì)觀仿真建模的CFRP縱-扭超聲銑削材料去除機(jī)理研究

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關(guān)鍵詞：碳纖維增強(qiáng)樹脂基復(fù)合材料;縱-扭超聲振動(dòng);細(xì)觀仿真;材料去除機(jī)理;纖維方向角中圖分類號(hào)：TH162；V258DOI：10.3969/j.issn.1004-132X.2025.04.013 開(kāi)放科學(xué)（資源服務(wù)）標(biāo)識(shí)碼（OSID）：

Material Removal Mechanism of CFRP in Longitudinal-torsional Ultrasonic Milling Based on Mesoscopic Simulation Model

ZHANG ChaolREN Yinghui1，2*YU Xiaolin1LI Maojun2YU Chengyang2DU Xinliang1 1.School of Mechanical Engineering，Shenyang Ligong University，Shenyang，110159 2.College of Mechanical and Vehicle Engineering，Hunan University，Changsha，

Abstract： In order to reveal the material removal mechanism of CFRPs in longitudinal-torsional ultrasonic vibration milling，a simulation study of CFRP mesoscopic-cutting was carried out. The kinematic characteristics of longitudinal-torsional ultrasonic vibration miling were analyzed，and a 3D mesoscopic-cutting model of CFRPs was established. The fiber removal mechanism， matrix damage， chip morphology and cutting force of conventional cutting and longitudinal-torsional ultrasonic vibration cutting were compared under different fiber orientation angles. The results show that when the fiber orientation angle is 0° ， the longitudinal-torsional ultrasonic vibration cutting impact characteristics accelerate the fiber bending processes，and the fiber removal mechanism at the cuting-edge changes from conventional rolling to scratching. When the fiber orientation angle is 45° and 90° ，the impact characteristics enhance the shear effects of the cutting-edge on the fiber，especially when the fiber orientation angle is 90° . When the fiber orientation angle is 135° ，the fiber removal mechanism changes from large area bending to local fracture.Longitudinal-torsional ultrasonic vibration miling is beneficial to restrain matrix damage，improve chip morphology and reduce heat accumulation in the cutting areas and decrease the average cutting forces. The experiments verify the accuracy of the simulation analysis.

Key words：carbon fiber reinforced polymer（CFRP）；longitudinal-torsional ultrasonic vibration; mesoscopic simulation；material removal mechanism； fiber orientation angle

0 引言

碳纖維增強(qiáng)樹脂基復(fù)合材料（carbonfiberreinforcedpolymer，CFRP因強(qiáng)度高、質(zhì)量小、耐腐蝕和抗疲勞性好等優(yōu)勢(shì)，在航空航天、汽車制造及醫(yī)療等領(lǐng)域得到了廣泛應(yīng)用[1]。（剩余14014字）