CAJ | 학술논문

针对压弯成形制造带筋尤其高筋，整体壁板工艺仍然依赖工人的实际经验、缺乏科学理论指导的现状，开展对铝合金带筋整体壁板压弯成形过程变形机理深入的力学分析。对筋条在内弧的对称、非对称形状截面的结构特征，利用解析法得到了压弯过程中弯曲中性层的平移量和转动量，并通过有限元模拟进行验证；建立了回弹的计算模型，得出上模下压量与回弹量的关系表达式，并与有限元模拟和实验进行了对比验证。
침대압만성형제조대근우기고근，정체벽판공예잉연의뢰공인적실제경험、결핍과학이론지도적현상，개전대려합금대근정체벽판압만성형과정변형궤리심입적역학분석。대근조재내호적대칭、비대칭형상절면적결구특정，이용해석법득도료압만과정중만곡중성층적평이량화전동량，병통과유한원모의진행험증；건립료회탄적계산모형，득출상모하압량여회탄량적관계표체식，병여유한원모의화실험진행료대비험증。
Press bend forming is a main fabrication method for the high-stiffener integral panel .But the present press bend form-ing process relies completely on workers’ experiences instead of theoretical instructions ,which adds restrictions to the production of new aircrafts in China .According to the characteristics of the symmetric and asymmetric cross section specimens with ribs in-side ,the translation and the rotation of the bending neutral layer have been derived and verified by FEA simulation .The spring-back calculation model and the relation between the punch displacement and the springback amount are all deduced and verified by FEA simulation and experiments .