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特大型船用曲轴曲柄锻造工艺优化研究
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英文标题：Study on process optimization of large-scale crankshafts used for ships |
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作者：胡金华 |
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单位：燕山大学机械工程学院 |
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关键词：曲轴 锻造 有限元分析 |
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分类号：TG316 |
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出版年,卷(期):页码：2010,35(1):12-15 |
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摘要：
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对特大型船用曲轴曲柄的弯曲锻造过程进行热力耦合数值模拟,并与现有文献进行了对比验算。结果表明:所建立的数值模型与实际试验结果比较吻合。在此基础上,针对曲柄弯锻过程中的典型缺陷,采用基于监控技术的约束变尺度法优化程序OPTIII,将ANSYS/LSDYNA作为有限元子程序调用,对曲柄弯曲锻造所用毛坯形状进行了优化计算,以搞清曲柄弯曲锻造的成形机理并获得合理形状的毛坯。最后,进行了工艺试验,试验结果与数值模拟结果比较吻合。
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The bending forging process was studied for large-scale crankshafts.The results from the numerical computation were compared with those from an available document.Aiming at the typical defection produced by the bending forging process,an optimization program,i.e.,OPTIII,which was developed based on the constrained variational dimension method,was used to implement the shape optimization for the billet.Herein,ANSYS/LSDYNA was called as a subroutine.Finally,the experimental testing was carried out.The results between the simulation and the testing agreed very well.
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基金项目：
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作者简介：
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参考文献：
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[1]宋士丹,胡朝备.特大型船用曲轴曲拐锻造工艺研究[J].大型铸锻件,2001,1(1):11-13.
[2]武玉波.船用大型组合式曲轴曲柄锻造工艺的数值模拟及实验研究[D].秦皇岛:燕山大学,2005.
[3]Chenot J L,Bellet M.The viscoplastic approach for the finiteelement modelling of metal-forming processes[J].AppliedMechanics Division,1987,(88):343-351.
[4]程耿东.工程结构优化设计基础[M].北京:水利电力出版社,1983.
[5]Wilson R B.A simplified algorithm for concave programming[D].Cambridge:Harvard University,1963.
[6]Han S P.A globally convergent method for nonlinear pro-gramming[J].Journal of Optimization Theory Application,1977,22(3):297-309.
[7]Powell M J D.Nonlinear programming 3[M].New York:Academic Press,1978.
[8]Maratos N.Exact penalty function algorithms for finite di-mensional and control optimization problems[D].Cam-bridge:Univ.London,1978.
[9]Chamberlain R M,Powell M J D,Lemarechal C,et al.Thewatchdog technique for forcing convergent in algorithms forconstrainted optimization[J].Math.Prog.Study,1982,16(1):1-17.
[10]Powell M J D.Algorithms for nolinear constraints that use lagrang-ian function[J].Math.Prog.,1980,14(2):224-248.
[11]余俊,周济.优化方法程序库OPB-1[M].北京:机械工业出版社,1989.
[12]Garcia Palonmares U M,Mangasarian O L.Superlinearlyconvergent Quasi-Newton algorithms for nonlinearly con-strained optimization problem[J].Math.Prog.,1976,11(2):1-13.
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