CAJ | 학술논문

摩擦因子预测的准确性是模拟结果能否反映现实的关键,对指导实践具有重要意义。通过对不同摩擦系数下30CrMnSi热反挤压杯形件的成形力的模拟与实验进行对比研究,利用误差平方和以及多项式的最小二乘法对模拟数据进行处理,反推出工况下润滑剂油基石墨的摩擦因子,并加以匹配分析。另外针对不同摩擦因子对模具磨损程度的影响进行了对比研究。经分析与对比研究成功预测出了实况下的摩擦因子值及摩擦与磨损的关系。
마찰인자예측적준학성시모의결과능부반영현실적관건,대지도실천구유중요의의。통과대불동마찰계수하30CrMnSi열반제압배형건적성형력적모의여실험진행대비연구,이용오차평방화이급다항식적최소이승법대모의수거진행처리,반추출공황하윤활제유기석묵적마찰인자,병가이필배분석。령외침대불동마찰인자대모구마손정도적영향진행료대비연구。경분석여대비연구성공예측출료실황하적마찰인자치급마찰여마손적관계。
The prediction accuracy of friction factor is a important significance for guiding practice. Through the key of the simulation results to reflect the reality and has the comparative study of simulation and experiment on form- ing force of 30CrMnSi hot backward extrusion cup under different friction coefficients, the sum of error square and least squares method of polynomial were used for processing the simulation data, then the friction factor of the lubri- cant oil-based graphite under working conditions were inversed and a matching analysis was made. In addition, the influencing extent of different friction factors on mold wear was comparatively studied. The friction factor value and the relationship between friction and wear under actual cases were predicted from the above analysis and compara- tive study.