基于自适应耦合算法的石材锯切过程仿真研究

doi:10.16182/j.issn1004731x.joss.201802017

系统仿真学报 ›› 2018, Vol. 30 ›› Issue (2): 497-505.doi: 10.16182/j.issn1004731x.joss.201802017

基于自适应耦合算法的石材锯切过程仿真研究

田永军^1,2, 段国林^1,*, 康军广¹, 刚建华¹

1.河北工业大学机械工程学院,天津 300130;
2.天津职业技术师范大学工程实训中心,天津 300222

收稿日期:2016-01-13 出版日期:2018-02-08 发布日期:2019-01-02
通讯作者: 段国林,男,河北,博士,教授,研究方向为CAD/ CAE/ CAM。
作者简介:田永军(1988-),男,山东,博士,讲师,研究方向为CAE、机械设计制造
基金资助:
天津市自然科学基金(11JCZDJC23100); 河北省自然科学基金(F2014202241)

Simulation of Stone Cutting Process Based on Adaptive Coupling Method

Tian Yongjun^1,2, Duan Guolin^{1, *}, Kang Junguang¹, Gang Jianhua¹

1.School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China;
2.Tianjin University of Technology and Education,Engineering Training Center, Tianjin 300222, China

Received:2016-01-13 Online:2018-02-08 Published:2019-01-02

摘要/Abstract

摘要： 针对石材锯切过程中复杂的动态力学行为及有限元法在处理大变形时数值不稳定等问题,依据连续损伤力学理论,采用混合单元自适应耦合算法建立了锯片-石材切割系统的加工模型,模拟了石材锯切过程。分析发现:石材去除过程是一个间断循环的过程;锯切过程中,切割力从零开始,接触石材后迅速增大,随后又减小,最后在一定范围内平稳波动;根据锯片表面和石材内部等效应力分布情况,确定了模型最易破坏的区域;并通过与实验对比,锯片横向振动速度数据吻合度较高。

关键词: 混合单元自适应耦合, 石材切割, 圆锯片, 脆性材料

Abstract: Aiming at complex nonlinear dynamic behaviors of stone-cutting process with circular saw and handling large mesh deformation instability in FEM, according to brittle material fracture mechanism, an adaptive coupling algorithm was established for calculating the cutting process of circular saw-stone materials system. The results show that the material removal process is a process of intermittent cycle; the cutting force is zero at the beginning of the process, and the force increases rapidly when the blade contacts with the stone, then decreases, eventually varies in a stable fluctuation. According to von-Mises stress distributions of saw blade and stone, the easily damaged region is determined. Through comparison, it is found that the blades’ transverse vibration velocity simulation data are consistent with the experimental results.

Key words: adaptive hybrid element adaptive coupling method, stone cutting, circular saw blade, brittle material

中图分类号:

TP29
TH122

田永军, 段国林, 康军广, 刚建华. 基于自适应耦合算法的石材锯切过程仿真研究[J]. 系统仿真学报, 2018, 30(2): 497-505.

Tian Yongjun, Duan Guolin, Kang Junguang, Gang Jianhua. Simulation of Stone Cutting Process Based on Adaptive Coupling Method[J]. Journal of System Simulation, 2018, 30(2): 497-505.

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基于自适应耦合算法的石材锯切过程仿真研究

Simulation of Stone Cutting Process Based on Adaptive Coupling Method

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