Simulation and experimental study on dynamic response of milling aluminum alloy thin plate

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (11) : 63-68.

LI Guanglun1， JIANG Zhaoliang1,2， ZHAO Li1， CHEN Jia1

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Abstract

The dynamic stress and strain of the workpiece caused by periodically varying milling forces have an important influence on the residual stress and vibration. Defining the dynamic response during milling process can regulate the generation and redistribution of residual stress effectively. Taking the aluminum alloy thin plate as an example, a 3D dynamic milling simulation model was established based on simulation software ABAQUS. The distribution of stress field at different milling moment was obtained, and the dynamic response characteristics of the workpiece when milling different position were analyzed. By conducting milling experiment, the dynamic strain and milling force of the workpiece were measured, and the influence of the loading frequency on the dynamic response was analyzed. The results show that stress wave and stress concentration are more likely to occur when milling along edge; the fluctuation frequency of strain at different loading frequencies is constant at 267 Hz, and the strain varies within the range of 40 με; the dynamic response of the workpiece is tightly associated with the milling position.

Key words

milling process / aluminum alloy thin plate / dynamic response / FEM simulation

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LI Guanglun1， JIANG Zhaoliang1,2， ZHAO Li1， CHEN Jia1. Simulation and experimental study on dynamic response of milling aluminum alloy thin plate[J]. Journal of Vibration and Shock, 2020, 39(11): 63-68

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