CAJ | 학술논문

采用NUMISHEET2002会议提出的杯形件拉深Benchmark试验方案,在不同压边力工况下,对铝合金板6111-T4的拉深性能、各向异性行为、起皱缺陷进行了试验研究.研究表明:各向异性系数小并未对铝合金板的成形性能产生较大影响,通过增大压边力能有效解决起皱问题,铝合金板6111-T4具有良好的冲压成形性能.基于自主研发的冲压成形CAE软件KMAS平台,对Benchmark试验进行了仿真验证,与试验结果对比表明:KMAS软件采用的Barlat-Lian各向异性屈服准则和动力半显式算法能够准确模拟铝合金板的冲压成形.
채용NUMISHEET2002회의제출적배형건랍심Benchmark시험방안,재불동압변력공황하,대려합금판6111-T4적랍심성능、각향이성행위、기추결함진행료시험연구.연구표명:각향이성계수소병미대려합금판적성형성능산생교대영향,통과증대압변력능유효해결기추문제,려합금판6111-T4구유량호적충압성형성능.기우자주연발적충압성형CAE연건KMAS평태,대Benchmark시험진행료방진험증,여시험결과대비표명:KMAS연건채용적Barlat-Lian각향이성굴복준칙화동력반현식산법능구준학모의려합금판적충압성형.
Adopting the Benchmark test scheme of a cylindrical cup deep drawing proposed by NUMISHEET2002, the deep draw ability, anisotropic behavior and wrinkling of aluminum alloy 6111-T4 sheet were researched under different blank holder force (BHF) conditions. The results show that the formability of aluminum alloy sheet is hardly influenced by small anisotropic coefficient, and wrinkling can be eliminated effectively by increasing BHF, therefore aluminum alloy 6111-T4 sheet has excellent stamping formability. Based on the platform of KMAS, self-developed sheet metal forming CAE software, Benchmark test was simulated, and the results were compared with that of the test. KMAS software, adopting Barlat-Lian anisotropic yield criteria and dynamic semi-explicit algorithm, is able to simulate aluminum alloy sheet forming accurately.