Bolted joints for single-layer structures: numerical analysis of the bending behaviour

Behaviour and design of prefabricated connections under combined bending and compression for free-form grid structures

“…With the applied actions over the surface, a connection will be mainly subjected to bending moment. However, when the curvature of the free-form surface is large, the connections are normally subjected to combined The research on single-layer grid structures is mainly concentrated in three areas according to the normal design procedure of space structures: Grid generation and form-finding over sophisticated freeform surfaces provided by architects [10][11][12]; investigation of the key parameters that affect the stability of spatial structures, including the span-to-depth ratios of space structures, the initial geometric imperfection, the strength and stiffness of connections [13,14] and study on the mechanical behaviour of individual joint [15][16][17]. Through those research, joint strength and stiffness have been found of significant importance for the analysis of load-carrying capacity and failure modes of single-layer grid structures [18][19][20][21][22].…”

Design and mechanical behavior study of ultrahigh-torque variable pitch casing joint

“…Some scholars established a twodimensional (2D) finite element analysis (FEA) and studied on stress concentration coefficient on joint thread and stress distribution law under loads, analyzed the stress state and strain state under the make-up torque, evaluated the strength of thread, and studied the mechanical behavior of the pre-tightening torque under the analysis of the problem. [9][10][11][12] Lopez-Arancibia et al 13 presented that the mechanical evaluation method for the bending performance of the pre-tightening was bolted by preloading magnitude of interference. Calculation models mentioned above, based on 2D or three-dimensional (3D) simplified models cannot characterize the relationship of deformation coordination under torque load applied by preloading magnitude of interference on assembly.…”