切削式吸能热力耦合研究

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (14) : 93-99.

论文

切削式吸能热力耦合研究

刘国伟1，夏茜2, 王千叶1，董如玲3

作者信息 +

Thermal-structure coupled analysis of cutting energy-absorbing process

LIU Guo-wei 1，XIA xi 2，WANG Qian-ye 1，DONG Ru-ling3

Author information +

文章历史 +

摘要

据非线性动态模拟及热力耦合理论，利用有限元软件LS-DYNA对切削式吸能过程进行热力耦合研究。通过分析切削式吸能过程中切削力及能量耗散随切削行程的变化曲线，所得切削式吸能过程的力学特性十分稳定，撞击力未出现较大峰值；切削热耗散能量约占撞击总能量的21%，模拟中需考虑切削热影响。在热力耦合基础上分析撞击速度、切削截面参数及刀具参数对切削式吸能力学特性的影响规律。

Abstract

Based on the non-linear dynamic simulation principle and the theory of thermal-structure coupling, a complete thermal-structure coupled analysis of this energy-absorbing process was made in finite element software LS-DYNA. The cutting force and energy dissipation curve was obtained, The results showed that peak value didn’t appear in the impact force curve，and the force value kept stable in the calculate. The energy dissipated by cutting heat accounted for 21% of the total impact energy, then, the influence of cutting heat should be considered during the simulation of cutting energy-absorbing process. Based on thermal-structure coupled analysis, The affection regularity of impact speed, cutting section parameters and tool parameters to mechanical characteristics of cutting energy-absorbing process was studied.

导出引用

刘国伟1，夏茜2, 王千叶1，董茹玲3. 切削式吸能热力耦合研究[J]. 振动与冲击, 2015, 34(14): 93-99

LIU Guo-wei 1，XIA xi 2，WANG Qian-ye 1，DONG Ru-ling3. Thermal-structure coupled analysis of cutting energy-absorbing process[J]. Journal of Vibration and Shock, 2015, 34(14): 93-99

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