Analysis of fatigue fracture mechanism of laser spiral welding of dissimilar metals of 6082 high strength aluminum alloy and DP980 high strength dual phase steel

Cheng, Nuo; Yang, Shanglei; Li, Yanlei; Zhao, Xinlong; Bi, Junhang; Tian, Jiawei

doi:10.1016/j.mtcomm.2024.110665

Materials Today Communications

2024

DOI: 10.1016/j.mtcomm.2024.110665

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Analysis of fatigue fracture mechanism of laser spiral welding of dissimilar metals of 6082 high strength aluminum alloy and DP980 high strength dual phase steel

Nuo Cheng,

Shanglei Yang,

Yanlei Li

et al.

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Numerical Simulation and Experimental Study on Construction Forming of Cable-Stayed Tensioned Metal Thin Sheet Structure

Qin,

Xiao,

Sun

et al. 2024

Buildings

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This study investigates the construction methodology of large-span cable-stayed tensioned metal thin-sheet structures, introducing the “integrated enclosure and load-bearing” design concept. By applying in-plane prestress, the out-of-plane stiffness of the metal thin sheet is effectively enhanced, enabling it to simultaneously serve as an enclosure and a load-bearing component. Through experimental studies and finite element analysis, the study systematically examines the effects of various construction methods on internal forces and displacements. The tensioning of back cables is identified as the safest and most efficient construction method. Subsequently, through simulations of a three-span structure and tensioning forming tests, the research examines displacement, stress, and cable force distribution patterns, demonstrating that increases in the tensioning level result in corresponding increases in sheet surface stress, cable forces, and displacements. The structure exhibits a concave middle section, upward curvatures at both ends, and outward-leaning end columns. Structural members with lower cable forces show minimal impact on displacement and are therefore identified as suitable targets for design optimization. This study offers a theoretical foundation and practical engineering insights to guide the optimization of design and construction for cable-stayed tensioned metal thin-sheet structures.

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Numerical Simulation and Experimental Study on Construction Forming of Cable-Stayed Tensioned Metal Thin Sheet Structure

Qin,

Xiao,

Sun

et al. 2024

Buildings

View full text Add to dashboard Cite

show abstract

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Analysis of fatigue fracture mechanism of laser spiral welding of dissimilar metals of 6082 high strength aluminum alloy and DP980 high strength dual phase steel

Cited by 1 publication

References 18 publications

Numerical Simulation and Experimental Study on Construction Forming of Cable-Stayed Tensioned Metal Thin Sheet Structure

Numerical Simulation and Experimental Study on Construction Forming of Cable-Stayed Tensioned Metal Thin Sheet Structure

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