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Institute of Technology Guwahati, Guwahati 781039, India Received 31 May 2019; accepted 12 November 2019 Abstract: The effect of bending pre-strain and pressure on the forming behavior of AA5052-H32... in pressure. Key words: shock wave; impact; bending pre-strain; formability 1 Introduction Due to the increasing awareness of global warming, there are efforts shown by the aerospace and other......
analytical, experimental or numerical methods, respectively. But most of them focus on only the effect of wall thickness change in NC bending process as the pre-bending operations for the subsequent... forces change the local or the whole stress/strain distribution of the bent tube in NC bending process. Fig.2 Resultant forces subjected to tube in NC bending So it can be seen that the process......
Effect of pre-strain on fatigue crack growth of 2E12 aluminum alloy YI Dan-qing(易丹青)1, 2, YANG Sheng(杨胜)1, 2, DENG Bin(邓斌)1, ZHOU Ming-zhe(周明哲)1 1. School of Materials Science and Engineering...> Abstract: The influences of pre-strain on the mechanical property and fatigue crack growth of 2E12 aluminum alloy were evaluated by SEM, TEM, mechanical property and fatigue tests......
, so the plane hypothesis is applicable. Resistance strain gauge symmetrically is stuck on two sides and upper-down of rock beam pure bending. Six or ten strain gauges are suck on every beam, as shown...J. Cent. South Univ. Technol. (2008) 15(s1): 438-442 DOI: 10.1007/s11771-008-395-y Rock bending creep and disturbance effects FU Zhi-liang(付志亮)1, 2, ZHENG Ying-ren(郑颖人)2, LIU Yuan-xue(刘元雪)2 (1......
Fatigue behaviour of pre-strain 7B04-T7451 aluminum alloy JIANG Feng(姜锋)1, JIAN Hai-gen(蹇海根)1, YIN Zhi-min(尹志民)1, HE Zhen-bo(何振波)2 1. School of Materials Science and Engineering, Central South... of a 7B04-T7451 (Al-Zn-Mg-Cu) subjected to a tensile pre-strain level of 2％ was investigated, including the fatigue crack growth (FCG) rate, microstructure observation, fractographic examination......
Molecular dynamics simulation of bending crack initiation and growth of single crystal aluminiumSHAN De-bin(单德彬), YUAN Lin(袁 , 林), GUO Bin(郭 斌)(School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)Abstract:Molecular dynamics (MD) simulation was employed to research the mechanism of bending crack initiation and growth of single crystal aluminium......
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Bending analysis and control of rolled plate during snake hot rollingZHANG Tao(张涛)1, 2, WU Yun-xin(吴运新)1, 2, GONG Hai(龚海)1, 2, 3, ZHENG Xi-zhao(郑细昭)1, 2, JIANG Shao-song(蒋绍松)1, 2(1. State Key.... School of Materials Science and Engineering, Central South University, Changsha 410083, China)Abstract:In order to study the bending behavior of aluminum alloy 7050 thick plate during snake hot......
with small bending radii. The key to realize stable and precise bending forming is to select sound process parameters in order to control the stress and strain states, and thus the degrees of ovalization..., and the stress and strain distribution, tube wall thinning, cross section ovalization and other defects in the NC bending have been studied[3-16]. However, there have not been sufficient studies......
shows (longitudinal) bending stress vs bending strain (elongation) throughout the bending sequence, a major shift in stress occurs as a result of unloading. At the point where the shortening of the flange... remain plane during bending (Navier-Bernoulli), in combination with a suitable stress-strain model. Since the flange is deformed into a (constant) curvature, an inward-acting stress component of magnitude......
