TY - JOUR
T1 - Elastostatic properties for flange-bolted joints
AU - Shi, Wenbo
AU - Zhang, Zhousuo
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/10
Y1 - 2023/10
N2 - An accurate understanding of the elastostatic properties for flange-bolted joints is crucial in modeling the nonlinear dynamics. In this study, the elastostatics of the flange are investigated through finite element (FE) analysis and experimental test. It is shown that the axial stiffness exhibits bi-linear properties, and the flange appears axial-flexural coupling deformations under bending moments. Then, to understand the bi-linear axial stiffness properties and the influence of bolt preloads on axial and bending stiffnesses, the bolted T-stub joint is chosen as the object of study, and the relevant mechanical model is further presented based on linear elasticity. Meanwhile, the validity of the mechanical model is numerically verified. The analysis indicates that under tension and compression, the essence of the bi-linear axial stiffness is the differences in interface contact status, and the coupling deformations are induced by different tensile and compressive stiffnesses. In addition, both the tensile and bending stiffnesses increase with the increase of bolt preloads, while the effect of preloads on compressive stiffness is insignificant.
AB - An accurate understanding of the elastostatic properties for flange-bolted joints is crucial in modeling the nonlinear dynamics. In this study, the elastostatics of the flange are investigated through finite element (FE) analysis and experimental test. It is shown that the axial stiffness exhibits bi-linear properties, and the flange appears axial-flexural coupling deformations under bending moments. Then, to understand the bi-linear axial stiffness properties and the influence of bolt preloads on axial and bending stiffnesses, the bolted T-stub joint is chosen as the object of study, and the relevant mechanical model is further presented based on linear elasticity. Meanwhile, the validity of the mechanical model is numerically verified. The analysis indicates that under tension and compression, the essence of the bi-linear axial stiffness is the differences in interface contact status, and the coupling deformations are induced by different tensile and compressive stiffnesses. In addition, both the tensile and bending stiffnesses increase with the increase of bolt preloads, while the effect of preloads on compressive stiffness is insignificant.
KW - Axial-flexural coupling deformations
KW - Bi-linear axial stiffness properties
KW - Bolted T-stub joint
KW - Flange-bolted joints
KW - Mechanical model
UR - https://www.scopus.com/pages/publications/85158050104
U2 - 10.1016/j.ijpvp.2023.104966
DO - 10.1016/j.ijpvp.2023.104966
M3 - 文章
AN - SCOPUS:85158050104
SN - 0308-0161
VL - 205
JO - International Journal of Pressure Vessels and Piping
JF - International Journal of Pressure Vessels and Piping
M1 - 104966
ER -