Journal Article10.1016/J.TWS.2018.03.007
Bending capacity of corroded welded hollow spherical joints
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TL;DR: In this paper, the influence of corrosion that occurred at different places on the bending stiffness and bending capacity of welded hollow spherical joints (WHSJ) was investigated through a series of nonlinear numerical analyses.
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Abstract: Welded hollow spherical joints (WHSJ) have been widely used in space lattice structures. Corrosion is inevitable in the service life of WHSJ, which significantly reduces their bending capacity and seriously threatens their structural safety. This study aims to investigate the influence of corrosion that occurred at different places on the bending stiffness and bending capacity of WHSJ. The effects of corroded location and size, corroded thickness, and diameter and thickness of spherical body were investigated through a series of nonlinear numerical analyses. Two types of corroded shape were investigated. The equation used for predicting the residual bending stiffness of corroded WHSJ was established. Results indicated that corrosions in different places had distinct influence on the bending capacity of WHSJ. Loading capacity could be significantly reduced when corrosion occurred at other areas. The derived results would provide a foundation for estimating the residual bending stiffness and strength of structures connected by corroded WHSJ.
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Citations
Probability distribution of the compression capacity of welded hollow spherical joints with randomly located corrosion
TL;DR: In this paper, a probabilistic distribution model of the compression capacity of welded hollow spherical joints with randomly located corrosion was established. But the model was not applied to the case of a single joint.
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Assessment of the bending capacity of welded hollow spherical joints with pit corrosion
TL;DR: In this article, a numerical model of the hollow spherical joint with random pit corrosion was proposed to investigate the mechanical behavior of the corroded WHSJ. The failure probability could be deduced based on the formulae of the upper and lower bounds of the moment capacity.
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Experimental and numerical investigation of corroded steel columns subjected to in-plane compression and bending
TL;DR: In this paper, the effect of corrosion on the bearing capacity of compression-bending steel members, especially the local buckling behaviors, six H-shaped Q345 steel short columns with different corrosion degrees were designed.
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Galvanic corrosion induced localized defects and resulting strength reduction of circular steel tubes under axial compression: An experimental study
TL;DR: In this paper, a modified galvanic method was developed to generate predefined corroded defects at targeted locations, and a total of 24 tubes with different slenderness ratios were produced with various localized corrosion defects, and then axially compressed to obtain ultimate strength.
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Compressive Capacity of Corroded Welded Hollow Spherical Joints
TL;DR: Welded hollow spherical joints (WHSJ) are widely used in reticulated shell structures and they inevitably experience corrosion in their service life that significantly reduces their loading load as discussed by the authors.
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References
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TL;DR: In this paper, an assessing formula for the ultimate strength of hull structural plate with pitting corrosion damage under the biaxial in-plane compression loading was derived in theory, and which was then completed through numerical experiment by employing nonlinear finite element analyses for series of corroded plate models.
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Influence of corrosion on the ultimate compressive strength of steel plates and stiffened panels
TL;DR: In this article, a comparison between steel plate and stiffened panels subject to localised corrosion was performed, showing the structural element selection can strongly influence the accuracy of the estimated corrosion damage effect.
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Effect of pitting corrosion on strength of web plates subjected to patch loading
TL;DR: In this paper, a series of tests has been conducted on structural models which consist of web, shell and face plates to investigate the effect of pitting corrosion on strength of web plates subjected to patch loading.
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