CAJ | 학술논문

基于ABAQUS有限元软件平台建立5B02铝合金管件90°推弯成形有限元模型，并进行成形过程的有限元模拟。将模拟结果与实验结果进行对比，结果表明，两者形貌、弯曲部位壁厚分布一致，验证有限元模拟的可信性。通过分析不同成形阶段弯曲内侧与外侧的金属流动与应变场，揭示出5B02铝合金管件90°推弯成形后壁厚分布不均匀的机理。利用模拟方法对比研究内压大小（填料的弹性模量）对壁厚分布的影响，找出了有益于壁厚均匀分布的工艺条件，为实际生产中5B02铝合金管件经90°推弯工艺后壁厚均匀性的控制提供理论依据。
기우ABAQUS유한원연건평태건립5B02려합금관건90°추만성형유한원모형，병진행성형과정적유한원모의。장모의결과여실험결과진행대비，결과표명，량자형모、만곡부위벽후분포일치，험증유한원모의적가신성。통과분석불동성형계단만곡내측여외측적금속류동여응변장，게시출5B02려합금관건90°추만성형후벽후분포불균균적궤리。이용모의방법대비연구내압대소（전료적탄성모량）대벽후분포적영향，조출료유익우벽후균균분포적공예조건，위실제생산중5B02려합금관건경90°추만공예후벽후균균성적공제제공이론의거。
Based on ABAQUS software ,the finite element model of push‐bending in 90° of 5B02 aluminum alloy tube was estab‐lished .The simulation results were compared with the experimental results and it was found that both the profile shape and the wall thickness distribution of the two results agreed well .So the credibility of the finite element simulation was validated .By ana‐lyzing the metal flow and strain fields of the inner and outer side of the bending tube ,the uneven thickness distribution forming mechanism of the push‐bending in 90° of 5B02 aluminum alloy tube was revealed .The effect of the inner pressure (the elastic modulus of filler) on the wall thickness distribution was investigated by the simulation method .Then ,the process condition for u‐niform wall thickness distribution was found .This investigation provides a theoretical basis for the wall thickness uniformity con‐trolling in 5B02 aluminum alloy tube push‐bending process .