Transactions of Materials and Heat Treatment

Title：Volume effect analysis of metal deformation with low-frequency pulse vibration

Authors： CAI Gai-pin LIU Zheng ZHANG Hui(School of Mechanical and Electrical Engineering Jiangxi University of Science and Technology Ganzhou 341000 China)

Unit：

KeyWords： low-frequency pulse vibration plastic deformation visco-elasticity plasticity elasticity-plasticity volume effect

ClassificationCode：TG301

year,vol(issue):pagenumber：2008,33(5):155-159

Abstract：

The pulse vibration with a certain frequence and amplitude was given to a metal deformation system,and the pulse vibration signal was transformed by Fourier method,one demension elasticity-plasticity constructive model and a visco-elasticity plasticity constructive model were built for vibration drawing.On the base of the instantaneous strain and yield limit calculated,some judgement rules about visco-elastic deformation and visco-plastic deformation were established,after the construction equation resolved by MATLAB,dynamic stress and average stress of material drawing deformation with pulse vibration were obtained.With some vibration parameters and mechanical performance parameters given and pulse vibration drawing example,the dynamic stress-time curve,dynamic stress-strain curve and average stress-strain curve of the two construction models were protracted,It is shown form experiment that metal material deformation can described by visco-elasticity plasticity constructive model with a low frequency pulse vibration,and experimental result is consistent with the theoretical result,then volume effect analysis of the lasticity-plasticity model and a visco-elasticity elasticity model with a low frequency pulse vibration.

Funds：

国家自然科学基金资助项目(50665003);; 江西省研究生创新基金项目(YC07A077)

Reference：

[1]Kirchner H O K.Plastic deformation under simultaneous cyclicand unidircetional loading at low and ultrasonic frequencies[J].Materials Science Engineering,1984-1985,68:197-206.
[2]Atanasiu N.Metal forming in the ultrasonic field[J].Ad-vanced Technology of Plasticity,1984,(2):799-804.
[3]张士宏.金属材料的超声塑性加工[J].金属成形工艺,1994,12(3):102-106.
[4]何勍.金属振动塑性加工中体积效应的机理分析[J].金属成形工艺,1998,6(16):35-36.
[5]韩一昆,薛万夫,孙福根,等译.振动切削[M].北京:机械工业出版社,1985.
[6]何勍,闻邦椿.振动拉伸的弹粘塑性模型[J].机械科学与技术,2000,5(3):345-346.
[7]蔡改贫,姜志宏,翁海珊.低频振动塑性成形粘弹塑性模型的体积效应分析[J].机械强度,2007,2(29):346-350.
[8]周光泉.粘弹性理论[M].合肥:中国科学技术大学出版社,1996.

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