Experimental Research on Mechanical Properties of High-Strength Aluminum Alloy Bolt Ball Joints Under Axial Tension and Compression

LI Da; ZHU Rui-jie; LI Feng

doi:10.13204/j.gyjzG20121908

Volume 52 Issue 9

Sep. 2022

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LI Da, ZHU Rui-jie, LI Feng. Experimental Research on Mechanical Properties of High-Strength Aluminum Alloy Bolt Ball Joints Under Axial Tension and Compression[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(9): 108-114. doi: 10.13204/j.gyjzG20121908

Citation:

LI Da, ZHU Rui-jie, LI Feng. Experimental Research on Mechanical Properties of High-Strength Aluminum Alloy Bolt Ball Joints Under Axial Tension and Compression[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(9): 108-114. doi: 10.13204/j.gyjzG20121908

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Experimental Research on Mechanical Properties of High-Strength Aluminum Alloy Bolt Ball Joints Under Axial Tension and Compression

doi: 10.13204/j.gyjzG20121908

College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China

Received Date: 2020-12-19
Available Online: 2023-02-06

Abstract

Abstract

To study the mechanical properties of aluminum alloy bolt ball joint used in composite space truss structures under axial compression, tensile and compression tests of aluminum alloy ball joints with high-strength stainless steel bolts and high-strength aluminum alloy bolts were conducted. Axial tensile and compression tests were carried out respectively for aluminum alloy bolt ball joints with different bolt materials, sealing plates and sleeve sizes, and the axial tensile-compression bearing response laws and failure modes of aluminum alloy bolt ball joints with different joint size parameters were obtained. The test results showed that S51740 high-strength stainless steel was superior to 7075-T6 high-strength aluminum alloy in terms of elastic modulus, strength and ductility; due to the difference of bolt material and thickness of sealing plate, the aluminum alloy bolt ball joint would occur bolt fracture failure, sealing plate shear failure and ball internal thread shear failure under tensile load, and the selection of high-strength stainless steel and increasing the thickness of sealing plate could significantly improve the initial stiffness of joints; due to the different sizes of the sleeve and thickness of the sealing plate, the aluminum alloy bolt ball joint would occur sleeve compression failure and sealing plate shear failure, and the bearing area of sleeve was the main control parameter of the joint bearing design; when the aluminum alloy bolt ball joint parts entered into plasticity, the tensile stiffness and compression stiffness of the joint were significantly reduced.
- spatial truss,
- bolt ball joint,
- experimental study,
- material properties,
- mechanical properties under axial tension and compression,
- failure mode

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References(15)

References

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