CAJ | 학술논문

磨削加工过程中，工件表面材料的去除是磨粒冲击、切削、划擦等综合作用的结果。为了研究磨削过程中的冲击现象，针对45#钢工件，运用 DEFORM-3D 软件对单颗磨粒对工件表面的冲击强化过程进行有限元仿真，获得了工件内部应力场的分布情况，对磨削过程中工件表面等效应力与应变率进行了分析，得到了磨削参数对磨削过程的影响规律。对等效应力的分析表明：磨削过程中，工件受力是由很多脉冲力合成的。对应变率的分析表明：磨粒对工件表面的冲击强化效应显著。实验研究结果验证了理论与仿真分析结果的正确性，采用的仿真方法可有效分析与预测工件表面强化层指标。
마삭가공과정중，공건표면재료적거제시마립충격、절삭、화찰등종합작용적결과。위료연구마삭과정중적충격현상，침대45#강공건，운용 DEFORM-3D 연건대단과마립대공건표면적충격강화과정진행유한원방진，획득료공건내부응력장적분포정황，대마삭과정중공건표면등효응력여응변솔진행료분석，득도료마삭삼수대마삭과정적영향규률。대등효응력적분석표명：마삭과정중，공건수력시유흔다맥충력합성적。대응변솔적분석표명：마립대공건표면적충격강화효응현저。실험연구결과험증료이론여방진분석결과적정학성，채용적방진방법가유효분석여예측공건표면강화층지표。
The removal of surface material is the comprehensive result of impact cutting and scratches by abrasive grains in the process of grinding In order to study the impact during the grinding process we took 45 # steel as the research object and carried on finite element simulation about the impacting process to the workpiece??s surface by DEFORM-3D software The impact was functioned by single abrasive grain Through the simulation we got the distribution of stress field of internal workpiece analyzed the equivalent stress and strain rate of surface of workpiece in the process of grinding and obtained the influence of grinding parameter on grinding The analysis of equivalent stress reflected that grinding force is made up of a lot of surging force The analysis of strain rate indicated that the impact and hardening effect to the surface of workpiece by abrasive grains is remarkable existing The results of the experiment verified the correctness of the results of theoretical analysis and simulation The DEFORM-3D simulation method could analyze and predict the parameter of surface hardened layer effectively.