Influence of pre-tension on torsion of microscale Cu wires: a study via strain gradient theory

• Autorzy: Ma Xinbing , Liu Jinxing

Identyfikatory

DOI

10.15632/jtam-pl/112461

• Języki publikacji: EN

Abstrakty

EN

Nonproportional plastic deformations on the microscale are an emerging topic. A simplified theory of strain gradient elasto-plasticity is developed to study the evolution of yield strength in a copper wire sequentially experiencing tension and torsion. The pre-tension deformation and stress are inherited to the upcoming torsion process, resulting in a nonproportional loading condition. With consideration of the extra hardening effect due to strain gradient, pre-tension weakens the extra hardening effect of the strain gradient and the dependence on the wire radius. Cyclic torsion behavior is also investigated. Anomalous Bauschinger effect and plastic softening are found.

Słowa kluczowe

EN

nonproportional loading; strain gradient plasticity; size effect; cyclic response

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2019
• Tom: Vol. 57 nr 4
• Strony: 1055--1065
• Opis fizyczny: Bibliogr. 28 poz., rys.

Twórcy

autor

Ma Xinbing

• Jiangsu University, Faculty of Civil Engineering and Mechanics, Zhenjiang, Jiangsu Province, People’s Republic of China

autor

Liu Jinxing

• Jiangsu University, Faculty of Civil Engineering and Mechanics, Zhenjiang, Jiangsu Province, People’s Republic of China

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).