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不同壓邊工況下汽車用高強(qiáng)度鋼板拉深性能研究
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國(guó)家杰出青年科學(xué)基金資助項(xiàng)目（10125208）


Deep Drawability of High Strength Steel Sheet under Different Blank Holder Force Conditions
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    摘要:

    基于圓柱杯拉深標(biāo)準(zhǔn)試驗(yàn)，設(shè)計(jì)了用于研究高強(qiáng)度鋼板拉深性能的圓筒拉深試驗(yàn)方案，在70 kN和10 kN兩種壓邊力工況下，分別對(duì)1.2mm厚高強(qiáng)度鋼板SPCN440W-NS進(jìn)行拉深，并采用DYNAFORM軟件對(duì)拉深過程進(jìn)行有限元仿真。試驗(yàn)和仿真結(jié)果表明，試驗(yàn)高強(qiáng)度鋼板減薄較為均勻，具有較好的深沖性能；壓邊力對(duì)高強(qiáng)度鋼板拉深性能影響很大，高壓邊力工況下拉深制件表面質(zhì)量較好，低壓邊力工況下拉深制件壓料區(qū)域容易起皺；DYNAFORM軟件對(duì)高壓邊力拉深工況仿真精度高于低壓邊力工況。

    Abstract:

    Based on benchmark cylindrical cup deep drawing scheme, a cylinder deep drawing scheme was designed to study deep drawability of the high strength steel (HSS) sheet . HSS sheet SPCN440W-NS (1.2mm) was drawn respectively under 70kN and 10kN blank holder force (BHF) conditions, and drawing process was simulated by DYNAFORM software. The test and simulation results showed that HSS sheet SPCN440W-NS had better deep drawability. BHF had great influence on deep drawability of the HSS sheet. Workpiece had better surface quality under 70kN BHF condition, and was easily wrinkled in its flange region under 10kN BHF condition. The simulation accuracy of the DYNAFORM software under 70kN BHF condition was higher than 10kN BHF condition.

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劉瑞軍,褚亞旭,閆康康.不同壓邊工況下汽車用高強(qiáng)度鋼板拉深性能研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(10):230-234. Liu Ruijun, Chu Yaxu, Yan Kangkang. Deep Drawability of High Strength Steel Sheet under Different Blank Holder Force Conditions[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(10):230-234.

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