现代制造技术与装备
現代製造技術與裝備
현대제조기술여장비
MODERN MANUFACTURING TECHNOLOGY AND EQUIPMENT
2011年
3期
42-43,63
,共3页
熔化极气体保护焊%动态模拟模型%流场%脱离机制
鎔化極氣體保護銲%動態模擬模型%流場%脫離機製
용화겁기체보호한%동태모의모형%류장%탈리궤제
MIG welding%dynamic simulation model%flow field%from mechanism
以流体动力学、电磁理论及VOF法（Volume of Fluid Method）为基础建立了熔滴过渡的动态模拟模型,模型中考虑电磁收缩力、表面张力、等离子流力的影响。利用建立的模型模拟了熔滴的形成、长大及脱离过程,计算了电流对过渡熔滴尺寸及频率的影响,计算结果与实验结果吻合较好。计算了不同阶段的熔滴中的流场,并利用计算的流场分析了熔滴的脱离机制。
以流體動力學、電磁理論及VOF法（Volume of Fluid Method）為基礎建立瞭鎔滴過渡的動態模擬模型,模型中攷慮電磁收縮力、錶麵張力、等離子流力的影響。利用建立的模型模擬瞭鎔滴的形成、長大及脫離過程,計算瞭電流對過渡鎔滴呎吋及頻率的影響,計算結果與實驗結果吻閤較好。計算瞭不同階段的鎔滴中的流場,併利用計算的流場分析瞭鎔滴的脫離機製。
이류체동역학、전자이론급VOF법（Volume of Fluid Method）위기출건립료용적과도적동태모의모형,모형중고필전자수축력、표면장력、등리자류력적영향。이용건립적모형모의료용적적형성、장대급탈리과정,계산료전류대과도용적척촌급빈솔적영향,계산결과여실험결과문합교호。계산료불동계단적용적중적류장,병이용계산적류장분석료용적적탈리궤제。
Based on fluid dynamics,electromagnetic theory and VOF method （Volume of Fluid Method）,the dynamic simulation model of metal transfer had established,electromagnetic contraction force were considered in the model,surface tension,and the impact force of plasma flow. Using the established model to simulate the formation,growth and detachment process of the metal transfer,it calculated the impact of the current on droplet size and frequency,computing Results are in good agreement with the experimental results. Calculating flow field in different stages of droplet and using computational flow field it analyzed from mechanism of droplet.
