CAJ | 학술논문

基于DEFORM-3D有限元分析软件，采用刚黏塑性热力耦合有限元模拟技术，对4032铝合金销轴热挤压成形过程进行了模拟与分析，获得了金属流动、挤压载荷、等效应变以及坯料内部温度等相关场量的变化规律。结果表明：4032铝合金销轴热挤压变形时，坯料心部金属的流动速度大于表层金属；内部变形可分为4个区域，即未变形区、变形区、已变形区和死区；坯料在凹模模口附近变形最为剧烈，挤压载荷急剧增加，等效应变梯度最大，局部温升明显。
기우DEFORM-3D유한원분석연건，채용강점소성열력우합유한원모의기술，대4032려합금소축열제압성형과정진행료모의여분석，획득료금속류동、제압재하、등효응변이급배료내부온도등상관장량적변화규률。결과표명：4032려합금소축열제압변형시，배료심부금속적류동속도대우표층금속；내부변형가분위4개구역，즉미변형구、변형구、이변형구화사구；배료재요모모구부근변형최위극렬，제압재하급극증가，등효응변제도최대，국부온승명현。
Based on DEFORM-3D finite element analysis software ,using the rigid viscoplastic finite el-ement simulation technology ,the deformation behavior of 4032 Aluminum during hot extrusion was simula-ted and analyzed to obtain the metal flow ,squeezing load ,equivalent strain and the internal temperature variation and other related fields blank amount .The results showed that :during hot extrusion ,the flow rate of metal in the central of the billet was faster than that in the surface .The internal deformation of billet could be divided into four regions :none deformation zone ,deforming zone ,deformed zone and dead zone .Se-vere plastic deformation was imposed on the billet when it passed through the dead zone ,causing the rapid increase of load and local temperature as well as the maximum strain gradient .