Transactions of Materials and Heat Treatment

Title：Meso-damage mechanics and its application in metal plastic forming

Authors： LIU Xian-lan1 2 ZHANG Wen-yu2 LIU Chu-ming1(1.School of Material Science and Engineering Central South University Changsha 410083 China 2.Department of Mechanical Engineering Hunan Institute of Technology Hengyang 421002 China)

Unit：

KeyWords： meso-damage mechanics damage plastic forming

ClassificationCode：TG301

year,vol(issue):pagenumber：2008,33(1):9-13

Abstract：

Research progresses of meso-damage mechanics were summarized and its significations in metal plastic forming were analyzed.In metal plastic forming,the damage should be suppressed in majority of working procedures to enhance material forming ability,and in separating procedures,appropriate break condition should be created to obtain the good cross section quality.Taking fine blanking and superplastici forming as the examples of applying meso-damage mechanics,the formation process of microcracks and the causes of material damaging fracture were analyzed,and the limitation both on theory and applies of meso-damage mechanics were put forward in order to broaden the development and application of mesodamage mechanics.

Funds：

湖南省自然科学基金资助项目(06JJ50137);; 衡阳市科委资助科研计划项目(06Kj02)

Reference：

[1]杜善义,王彪.复合材料细观力学[M].北京:科学出版社,1998.
[2]郑长卿.韧性断裂细观力学的初步研究及其应用[M].西安:西北工业大学出版社,1988.
[3]McClintock F A.Challenges in fracture mechanics[J].De-velopments in Mechanics,1969,(5):905-919.
[4]Gurson A L.Continumtheory of ductile rupture by void nu-cleation and growth:part I—Yield criteria and flowrules forporous ductile media[J].Journal of Engineering Materialsand Technology,1977,99(1):2-15.
[5]郑长卿,张克实,周利.金属韧性破坏的细观力学及其应用研究[M].北京:国防工业出版社,1995.138-165.
[6]温彤,廖林灿,张湘伟.金属剪切过程的理论研究状况[J].锻压技术,2000,25(3):44-57.
[7]Gillemat L,Czoboly E.Genetalized theory of fracture[A].Proc.Symp.Fracture[C].Marianske la zne:Springer,1970.
[8]Freudenthal A M.The Nelastic Behavior of Solids[M].New York:Wiley,1950.
[9]Cockcroft M G,Latham D J.On the ductile enlargment ofvoidsin triaxial stress fields[J].J.Int.Metals,1968,96
(3):384.
[10]Ward MJ,Miller B C,Davey K.Si mulation of a multi-stagerail way wheel andtyre forming process[J].Journal of Materi-als Processing Technology,1998,80-81(10):206-212.
[11]吴丽平,刘建雄,刘新胜,等.基于塑性变形有限元模拟的模具结构优化[J].锻压技术,2006,31(2):55-57.
[12]Ozturk,Fahrettin,Lee Daeyong.Analysis of forming li mitsusing ductile fracture criteria[J].Journal of Materials Pro-cessing Technology,2004,147(3):397-404.
[13]刘长丽,周贤宾,陈劼实.板材拉伸破裂厚度分布及成形极限预测[J].锻压技术,2006,31(5):147-150.
[14]吴诗?.损伤力学在塑性加工中的应用[J].中国机械工程,1994,5(3):44-47.
[15]嵇国金,彭颖红,阮雪榆.金属体积成形中的韧性损伤准则[J].中国有色金属学报,1999,9(1):35-38.
[16]程侠,贾争现,邰卫华.一个用于预测金属板材断裂的损伤破坏准则[J].长安大学学报,2003,20(2):62-78.
[17]李经天,董湘怀,黄菊花.微细塑性成形研究进展[J].塑性工程学报,2004,11(4):1-8.
[18]Tvergaard V,Niordson C.Nonlocal plasticity effects on in-teraction of different size voids[J].International Journal ofPlasticity,2004,20(1):107-120.
[19]李晓红,张克实.延性材料损伤孔洞尺寸效应探讨[J].机械科学与技术,2002,21(3):460-462.
[20]王国珍,杨伟顺,马进,等.初始损伤对钢的延性起裂韧性影响的细观力学分析[J].兰州理工大学学报,2006,32(4):34-37.
[21]王匀,周建忠,戴亚春,等.微成形技术在塑性加工中的应用研究[J].锻压技术,2005,30(6):81-85.
[22]申昱,于沪平,阮雪榆.微成形中材料非均匀流动研究[J].锻压技术,2005,30(5):1-4.
[23]Faura F.Finite element analysis of opti mumclearance in theblanking process[J].Materials Proc.Tech.,1998,80-81(4):121-125.
[24]贾建军,彭颖红.精冲过程的韧性断裂[J].上海交通大学学报,1999,33(2):181-183.
[25]赵震,谢晓龙,谷胜光.AISI-1035钢精冲成形与断裂的数值模拟[J].模具工业,2005,(7):13-16.
[26]Samuel M.FEMsi mulations and experi mental analysis of pa-rameters of influence in the blanking process[J].MaterialsProc.Tech.,1998,84(1):97-106.
[27]汤建云,黄尚宇,胡建华,等.摩擦片精冲成形实验研究[J].锻压技术,2006,31(3):43-45.
[28]张哲,王春荣,宋海龙.超塑20钢的空洞与断裂行为[J].材料科学与工艺,1996,4(2):35-39.
[29]Bae D H,Ghosh A K.Cavityformation and early growthin asuper-plastic Al-Mg alloy[J].Acta Materialia,2002,50(3):511-523.
[30]Chow K K,Chan K C.Effect of stress state on cavitation andhot forming li mits of a coarse-grained Al5052 alloy[J].Ma-terials Letters,2002,52(1-2):62-68.
[31]杨永兴,耿晓亮,张克实,等.LY12合金粗晶材料的超塑性变形机制[J].中国有色金属学报,2002,12(5):986-990.
[32]Venugopal Rao A,Ramakrishnan N,Kumar R Krishna.Acomparative evaluation of the theoretical failure criteria forworkabilityin coldforging[J].Journal of Materials Process-ing Technology,2003,142(1):29-42.
[33]化春键,赵升吨,申光宪.数值模拟塑性成形过程的并行计算现状[J].锻压技术,2005,30(1):1-6.

Service：

【This site has not yet opened Download Service】【Add Favorite】