Numerical and analytical investigation of geometrical imperfections on adhesive bonded cast steel – steel joints

2012 ◽  
pp. 249-256 ◽  
Author(s):  
M Albiez ◽  
F Götz ◽  
R Puthli ◽  
T Ummenhofer
Keyword(s):  
Cast Steel ◽  
Analytical Investigation ◽  
Geometrical Imperfections ◽  
Steel Joints

The Application of ABAQUS in Cast-Steel Joints Elastic-Plastic Analysis

2013 ◽  
Vol 351-352 ◽  
pp. 854-859 ◽  
Author(s):  
Fan Wang ◽  
Zhi Feng Luo ◽  
Sheng Hao Mo
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cast Steel ◽  
Element Analysis ◽  
Elastic Plastic ◽  
The Finite Element Analysis ◽  
Plastic Analysis ◽  
Reticulated Shell Structure ◽  
Steel Joints ◽  
Cast Steel Joint

The article introduces the application of the large universally used finite element analysis software ABAQUS in elastic-plastic analysis of the cast-steel joints in building structure. Using the cast-steel joint of a large reticulated shell structure in Shenzhen as an example, the article explains how to import the joint model into ABAQUS and start the finite element analysis, and finally get the elastic-plastic analysis results, thus provide the reference for engineering design, analysis and optimize design of cast-steel joints.

Study on Mechanical Properties of Ribbed Cast Steel Spherical Joint in Complex Stress State

2011 ◽  
Vol 284-286 ◽  
pp. 1120-1125 ◽  
Author(s):  
Yu Lan Zhang ◽  
Zhi Hua Chen ◽  
Yong Jian Liu ◽  
Xie Jin Wei ◽  
Yi Du Bu
Keyword(s):  
Stress State ◽  
Mechanical Performance ◽  
Design Method ◽  
Cast Steel ◽  
Complex Stress ◽  
Complex Stress State ◽  
Steel Ball ◽  
Technical Standards ◽  
Airport Terminals ◽  
Steel Joints

Cast steel joints have been widely utilized in large-span spatial structures. Based on Ordos airport terminals engineering, the structure and design method of ribbed steel ball nodes is put forward in this essay, in which nonlinear finite element method is applied, bearing capacity and deformation capacity of ribbed steel ball nodes in the complex stress state is made a penetrating analysis to determine mechanical performance of the ribbed steel ball. Among other things, the manufacturing process and technical standards of cast steel ball nodes are elaborated.

scholarly journals The Performance of Preloaded Bolts in Seismically Prequalified Steel Joints in a Fire Scenario

Materials ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5079
Author(s):  
Roberto Tartaglia ◽  
Mario D’Aniello ◽  
Marco Andreini ◽  
Saverio La Mendola
Keyword(s):  
Finite Element ◽  
Seismic Design ◽  
Finite Element Analyses ◽  
Fire Performance ◽  
Shear Forces ◽  
Design Rules ◽  
Rotation Capacity ◽  
Geometrical Imperfections ◽  
Seismic Scenarios ◽  
Steel Joints

Seismically pre-qualified beam-to-column joints guarantee large ductility in seismic scenarios thanks to the effectiveness of the design rules and technological requirements that are devoted to avoiding the failure of brittle components (i.e., bolts and welds). However, their performance under different severe actions like those induced by fire has not been properly investigated. Therefore, a parametric study based on finite element simulations has been carried out with the aim to verify the effectiveness of local details of seismically prequalified joints under fire. Finite element analyses were carried out on beam-to-column assemblies sub-structured from a reference archetype building accounting for both material and geometrical imperfections. The bolts’ internal actions were monitored in all the investigated specimens varying the applied vertical loads. The results show that the seismic design rules adopted to size the bolts are effective to resist the large increase in shear forces in the bolts occurring under fire. Thus, the investigated joints provide satisfactory ductility and rotation capacity at high temperature preventing the failure of bolts; further analysis could be conducted to investigated the fire performance of the investigated joints in a seismic scenario.

The Bionic Optimization and Analysis and Calculation of the Cast-Steel Joint with Three Branches

2014 ◽  
Vol 548-549 ◽  
pp. 1618-1622
Author(s):  
Zheng Hao Zhu ◽  
Wen Feng Du ◽  
Zhi Fei Sun ◽  
Li Ming Zhu
Keyword(s):  
Failure Modes ◽  
Cast Steel ◽  
Local Buckling ◽  
Bending Moment ◽  
Axial Direction ◽  
Calculation Methods ◽  
Steel Joint ◽  
Architectural Structures ◽  
Steel Joints ◽  
Cast Steel Joint

The tree-like structure is a branch of space bionic structures,belonging to the Bionic Architectural Structures. Cast-steel joints with branches are the keys to build the tree-like structures.They are used widely,and the most common joints in our projects are cast-steel joints with two、three and four branches. The cast-steel joints with two branches are planar,while the joints with three and four branches are spatial.Until now,the basic theoretical researches about the cast-steel joints with branches are also relatively scarce.This paper did researches about mechanical properties, calculation methods and structural optimization of the cast-steel joints with three branches deeply and systematically. The result shows that the bending moment has a big influence on the value of the max stress. And the three main failure modes of the cast-steel joint with three branches are yield of the main tubular along the axial direction, local buckling at the connection of the main tubular and branches, and the tearing out of the branches.

Experimental Study on Cast-Steel Joints for Nantong Sports Exhibition Center

2010 ◽  
Vol 163-167 ◽  
pp. 153-156
Author(s):  
Cai Qi Zhao ◽  
Jun Ma ◽  
Hong Tao Ma
Keyword(s):  
Finite Element Analysis ◽  
Experimental Study ◽  
Finite Element ◽  
Cast Steel ◽  
Nonlinear Finite Element Analysis ◽  
Fracture Morphology ◽  
Nonlinear Finite Element ◽  
Element Analysis ◽  
Elastic Plastic ◽  
Steel Joints

Cast-steel joints characterized in strong adaptability are widely applied in various long span spatial structures. At present, there is no national design specification available on cast-steel joints. Therefore, it is quite a necessity to conduct full-scale test or model test on cast-steel joints suffering complicated forces. This Paper has, taking Nantong Sports Exhibition Center as an example, conducted the experimental study of some important joints, and compared with elastic-plastic nonlinear finite element analysis result. According to the result, the fracture morphology of joints, stress distribution and bearing capacity of joints obtained from the elastic-plastic nonlinear finite element analysis are consistent with those of measured result, proving that the analysis theory applied in engineering design is basically suitable for the actual working condition of cast-steel joints and the joints are sufficiently safe.

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