Thickness change and springback of cold roll bonded aluminum/copper clad sheets in air bending process

Parsa, Mohammad Habibi; Mohammadi, Seyed Vahid; Mohseni, Ehsan

doi:10.1177/0954405415578724

Cited by 8 publications

(3 citation statements)

References 30 publications

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“…Because of that, the elastic modulus of Cu is lower than that of Ni. When Ni is placed under Cu, the transverse stress of the transition layer after bending is compressive stress, which is slightly larger than that of the outer layer [24][25][26]. The stress neutral layer moves to the inner Ni layer and the bending moment increases.…”

Section: Effect Of Placement Modementioning

confidence: 99%

“…The quantitative predicting of springback is very important for the metal sheets to achieve the desired final part geometry, especially for the miniaturized components. An advanced analytical formulation was developed to predict the thickness change of an Al/Cu clad sheet [26]. Li et al [12] investigated the micro-bending of CuZn37 brass foil and proposed a strain gradient hardening model considering twinning.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on Springback Behavior of Cu/Ni Clad Foils during Flexible Die Micro V-Bending Process

Wang

et al. 2019

Metals

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With the increasing demand for micro parts using metal laminates in modern production, the manufacturing processes of thin sheet parts have been elevated. However, it is difficult to predict the deformation behavior with miniaturization because of size effects in micro-scale. In this study, the flexible die micro V-bending behavior of Cu/Ni clad foils was investigated. The bending experiments with three different punch angles and Cu/Ni clad foils under different annealed temperatures were performed. The results show that the springback angle increases with the increase of bending angle and annealing temperature. The placement of Cu/Ni clad foils induced compressive stress results in the more obvious thinning of thickness and decreasing of springback angle. The interactive effects of the distribution of deformation zones and compressive stress induced by the interface layer result in the springback behavior of Cu/Ni clad foils during the flexible die micro V-bending process.

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Section: Effect Of Placement Modementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation on Springback Behavior of Cu/Ni Clad Foils during Flexible Die Micro V-Bending Process

Wang

et al. 2019

Metals

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“…With increase in die opening the springback increases. For a wider opening, the length of the sheet subjected to bending and hence the bending moment increases [22]. As a result, the springback increases.…”

Section: Thickness Change In Clad Sheetmentioning

confidence: 99%

Experimental study on bending behaviour of aluminium-copper clad sheets in V-bending process

Srinivasan

Raja

2019

Mechanics & Industry

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The bimetallic sheets are used in the industrial sheet metal products to meet the demands of multifunctionality. The bending behaviour of bimetallic sheet is contributed by individual layers of the sheet and it is entirely different from the monolithic material. In this study, V-bending experiments are carried out to understand the springback, bend force and thickness change of Al-Cu clad sheets. The effect of different parameters such as sheet thickness, sheet setting condition, die angle, die opening and punch radius have been investigated. The results indicated that springback is more for smaller die angle, wider die opening and larger punch radius. Increase in die angle, increase in die opening or decrease in punch radius decreases the bend force. The clad sheet thickens at Al/Cu setting condition whereas it thins at Cu/Al setting condition. This thinning or thickening of the sheet influences the springback and bend force.

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Impact from ice floes and icebergs on ships and offshore structures in Polar Regions

Amdahl

2019

IOP Conf. Ser.: Mater. Sci. Eng.

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The principles for ULS design and ALS design for offshore structures are discussed. The use of pressure-area curve versus force-area curves for analysis for estimation of ALS impacts is deliberated. Aspects of local and global shape of the ice feature are discussed in view of external mechanics (demand for energy dissipation) and internal mechanics (local damage). Simplified methods for structural damage assessment are reviewed for ice loads that may move both transverse to and along the shell plating. Material modelling of ice for nonlinear finite element analysis (NLFEA) of ice-structure interaction is reviewed. The material models must be calibrated against design curves and the sensitivity of the material parameters with respect to mesh size is investigated. Results from simulation of impacts of ice with different shapes on the column of a floating platform are presented, and the critical shape for penetration of the front plating for the present structural configuration is identified.

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Thickness change and springback of cold roll bonded aluminum/copper clad sheets in air bending process

Cited by 8 publications

References 30 publications

Investigation on Springback Behavior of Cu/Ni Clad Foils during Flexible Die Micro V-Bending Process

Investigation on Springback Behavior of Cu/Ni Clad Foils during Flexible Die Micro V-Bending Process

Experimental study on bending behaviour of aluminium-copper clad sheets in V-bending process

Impact from ice floes and icebergs on ships and offshore structures in Polar Regions

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