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JOURNALOFZHEJIANGUNIVERSITYSCIENCEAISSN1673565XPRINT；ISSN18621775ONLINEWWWZJUEDUCN／JZUS；WWWSPRINGERLINK．COMEMAILJZUSZJUEDUCALFEFAL／JZHEJIANGUNIVSCIA20078710771083SINGLEGATEOPTIMIZATIONFORPLASTICINJECTIONMOLDLIJIQUAN十，LIDEQUN，GUOZHIYING，LVHAIYUANDEPARTMENTOFPLASTICITYTECHNOLOGY,SHANGHAIJIAOTONGUNIVERSITY，SHANGHAI200030,CHINAEMAILHUTLI163．CORNRECEIVEDNOV．22，2006；REVISIONACCEPTEDMAR．19，20071077ABSTRACTTHISPAPERDEALSWITHAMETHODOLOGYFORSINGLEGATELOCATIONOPTIMIZATIONFORPLASTICINJECTIONMOLD．THEOBJECTIVEOFTHEGATEOPTIMIZATIONISTOMINIMIZETHEWARPAGEOFINJECTIONMOLDEDPARTS，BECAUSEWARPAGEISACRUCIALQUALITYISSUEFORMOSTINJECTIONMOLDEDPARTSWHILEITISINFLUENCEDGREATLYBYTHEGATELOCATION．FEATUREWARPAGEISDEFINEDASTHERATIOOFMAXIMUMDISPLACEMENTONTHEFEATURESURFACETOTHEPROJECTEDLENGTHOFTHEFEATURESURFACETODESCRIBEPARTWARPAGE．THEOPTIMIZATIONISCOMBINEDWITHTHENUMERICALSIMULATIONTECHNOLOGYTOFINDTHEOPTIMALGATELOCATION，INWHICHTHESIMULATEDANNEALINGALGORITHMISUSEDTOSEARCHFORTHEOPTIMUM．FINALLY，ANEXAMPLEISDISCUSSEDINTHEPAPE
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