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鋁合金板沖壓成形Benchmark試驗(yàn)與有限元仿真
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Benchmark Test and FEM Simulation of Aluminum Alloy Sheet Forming
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    摘要:

    采用NUMISHEET2002會(huì)議提出的杯形件拉深Benchmark試驗(yàn)方案,，在不同壓邊力工況下，對(duì)鋁合金板6111-T4的拉深性能,、各向異性行為,、起皺缺陷進(jìn)行了試驗(yàn)研究。研究表明：各向異性系數(shù)小并未對(duì)鋁合金板的成形性能產(chǎn)生較大影響,，通過增大壓邊力能有效解決起皺問題,，鋁合金板6111-T4具有良好的沖壓成形性能?；谧灾餮邪l(fā)的沖壓成形CAE軟件KMAS平臺(tái),，對(duì)Benchmark試驗(yàn)進(jìn)行了仿真驗(yàn)證，與試驗(yàn)結(jié)果對(duì)比表明：KMAS軟件采用的Barlat-Lian各向異性屈服準(zhǔn)則和動(dòng)力半顯式算法能夠準(zhǔn)確模擬鋁合金板的沖壓成形,。

    Abstract:

    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.

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閆康康,胡平,郭威.鋁合金板沖壓成形Benchmark試驗(yàn)與有限元仿真[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(11):232-235. Benchmark Test and FEM Simulation of Aluminum Alloy Sheet Forming[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(11):232-235.

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