residual behaviour of welded hollow spherical joints under

Experimental study on residual performance of welded

Experimental study on residual performance of welded

Apr 01, 2021 · The residual performance of welded hollow spherical joints after high temperature were studied. Residual mechanical behavior and failure mode were obtained. The residual mechanical properties of the specimens after a fire is affected by the temperatures and different cooling methods.sp.info MECHANICAL PERFORMANCE OF WELDED HOLLOW Joints in the spatial grid structure mainly include WHSJs, bolted hollow spherical joints, hub-type joints, cast steel joints, tubular joints, and Temcor joints (Fig. 1) 1,2,3,4,5 . WHSJs were proposed by Professor Liu [6] from Tianjin University in 1965. With a clear load path and convenient connectionsp.info MECHANICAL PERFORMANCE OF WELDED HOLLOW Mar 11, 2019 · [15] Zhao Z.W., Zhu H. and Chen Z.H., “Mechanical behavior of single-layer reticulated shell connected by welded hollow spherical joints with considering welding residual stress”, Welding in the World, 60(1), 61-69, 2016.sp.info Failure Pressure of Welded Hollow Spherical Joints Sep 28, 2020 · According to joint itself, the welded hollow spherical joints were basically processed from hot-rolled carbon structural steel plates, and such steel generally had uniform corrosion in atmospheric exposure (ISO 9226 1992); In the process of steel plate stamping forming and welding, the spherical surface was easy to form the heat affected zone, producing residual stress, inducing stress


			Flexural capacity and bending stiffness of welded hollow

Flexural capacity and bending stiffness of welded hollow

Liu, HB, Lu, J, Chen, ZH (2017) Residual behavior of welded hollow spherical joints after exposure to elevated temperatures. Journal of Constructional Steel Research 137:sp.info Bending capacity of corroded welded hollow spherical Welded hollow spherical joints (WHSJ) have been widely used in space lattice structures. In 1965, WSHJ were developed and first ap-plied on the project of Science and Technology Hall in Tianjin [1,2]. Several researchers have studied their mechanical behavior and their influence on integral structures [3–5]. Han [6,7] studied the ultimatesp.info Mechanical behavior of single-layer reticulated shell Nov 09, 2015 · The welded hollow spherical joints (WHSJ) have been widely used in space lattice structures. There have been many researchers investigating the mechanical behavior of WHSJ. But few literatures that considered the influence of welding residual stress can be found, let alone the integral structure analysis considering welding residual stress. In this paper, welding residual stress of sp.info Experimental Study on Variable-Amplitude Fatigue of Mar 21, 2018 · The welded joint consisting of a hollow sphere (Figure 2) has been commonly used in practice, accounting for about 70% of total cases [3–5]. Therefore, the variable-amplitude fatigue behavior of welded hollow spherical joints (WHSJs) under random repeated loads


			Experimental Study on Constant-Amplitude Fatigue

Experimental Study on Constant-Amplitude Fatigue

  • AbstractIntroductionDescription of Specimens and TestsTest Results and DiscussionEstablishment of Fatigue Design MethodConclusionsData AvailabilityAcknowledgmentsThe grid structure with welded hollow spherical joints (WHSJs) is widely used in industrial buildings with suspended cranes. Cyclic loadings generated by the suspended cranes could result in the fatigue failure of WHSJs. However, a corresponding fatigue design method has not been established. This paper presents an experimental study on the fatigue performance of the weld toe in the steel tube of WHSJs under axial force. Stress distribution on the joint’s surface was obtained by the static load test. By usinFEA of residual stress in cruciform welded joint of hollow The purpose of the present study is to investigate the residual stresses in heat affected zone of cruciform welded joint of hollow sectional tubes. To precisely capture the residual stresses, computational methodology based on three-dimensional finite element model for the simulation of gas metal arc welding in cruciform welded joint is presented.sp.info Load-carrying capacity and practical calculation method cylinder) to be the failure criterion of the hollow cy-linder joints, which is equal to the displacement of the welded hollow spherical joint in its strength ultimate state (Xue and Zhang, 2009). 2.3 Behavior of the joints subjected to axial load Under axial forces, the stress in the connection zone of beam and joint sp.info Advances on the Influence of Joint Stiffness on Mechanical The bolt-ball joints and welded hollow spherical joints are used frequently in the reticulated structures. Many researches on the influence of the bolt-ball joints stiffness on dynamic and static mechanical behavior of these structures are carried out by far. This paper reviews these researches, and points out the limitation as well, then the future work of which has been put forward.sp.info Constant Amplitude Fatigue Calculative Method of Welded

    
			Corrosion behavior of X65 pipeline steel:Comparison of

    Corrosion behavior of X65 pipeline steel:Comparison of

    Abstract The initial corrosion behavior of X65 pipeline steel subjected to wet–dry cyclic exposure and full immersion were investigated to determine the corrosion behavior of X65 pipeline steel in marine splash zone and below the waterline. The scanning electron microscope (SEM) test results indicated that pitting corrosion occurred under wet–dry cyclic condition whereas general corrosion sp.info Experimental and Numerical Study on Impact Behavior of In order to analyse the influence of continuous impact load and the stiffness of the welded hollow sphere joints on the impact resistance of the welded hollow sphere joints and verify the reliability of the generalized finite element software ANSYS/LS-DYNA precise modeling analysis of impact problems, two sets of the welded hollow sphere joints models with diameters of 80mm and 100mm were sp.info Stiffness characteristics of joints and influence on the Abstract In this paper, the theoretical and practical formulas of initial stiffness of welded hollow spherical joints were presented, and the elastic and elastoplastic critical displacements and rotations were obtained respectively. A mechanical model considering the stiffness characteristics of joints was proposed, the criterion of eccentric states and bearing stages was established to sp.info Experimental and Finite Element Analysis on the Ultimate Four groups (12 in total) of welded hollow spherical joints with ribbed stiffener were tested under uniaxial loads in this paper. With the adoption of elasto-plastic model and consideration of geometric and material nonlinearity, the whole loading process of the specimens was simulated by ABAQUS. Through combining the test data and computing results, two recommendations used to quantitatively

    
			Numerical Study on Flexural Behavior of Bolted Ball

    Numerical Study on Flexural Behavior of Bolted Ball

    Apr 08, 2013 · WANG X,D0NG S L,WAN H Y. Analysis of influence of welding spherical joint stiffness on internal force and deflection of grid [j]. Spatial Structures, 1996,2(4):34—40. (in Chinese) WAN H Y. Finite element analysis of axial flexibility and flexural stiffness of welded hollow spherical joints of space trusses structure [j].sp.info

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