Dissertation > Excellent graduate degree dissertation topics show

The FEM Analysis of Planar KT-Type Circular Hollow Section Joints

Author: ZhuJian
Tutor: LongLiPing
School: Chongqing University
Course: Structural Engineering
Keywords: KT-type joints finite element analysis failure mode ultimate bearing capacity design formula
CLC: TU392.3
Type: Master's thesis
Year: 2009
Downloads: 103
Quote: 0
Read: Download Dissertation

Abstract


Steel tubes have been widely used in truss structures because of excellent properties. As organic component of whole structure, design of tube-to-tube connections is a important aspect. Connections between hollow section members are usually configured by welding one member directly to the surface of the other. Directly welded KT-type CHS(Circular Hollow Section)joints,which are made up of three branchs and one chord,are very common in the design of trusses.There isn’t any formula for the direct calculation of KT-type joints strength.It is necessary to investigate static behaviour of Circular-Hollow-Section KT-joints in all aspects.By using ANSYS PROGRAM, the effect of the various geometric parameters on ultimate bearing capacity has been investigated. The regulations that the ultimate strength varies with geometric parameters and the destroying models of joints are obtained. The effect of stress of the chord on the ultimate strength is also investigated and the current formula of CIDECT is revised. Some constructive suggestions to the engineering design are put forward for reference in design and code revision.Here are the main content:Firstly, the ANSYS model of the joint is constructed.Through the contrastive analysis,several conditions as boudary condition、loading condition used in FEA(finite element analysis)are fixed.The loading proportion of the branchs is got from the KT-type joint in the upper chord of the truss.Then , Analysis of nonlinear finite-element for ultimate strength of 156 tubular KT-joints is carried out.The influence of nondimensional joints parametersβ、γ、τ、OV and a on failure mode and ultimate strength of tubular KT-joints is studied.The effect law of these parameters to the ultimate strength of KT-joints is described,and there are three major failure modes:branch strength failure、chord failure and chord bending failure.The ultimate strength of the KT-joints goes down under the force of the chord.Finally,the results of ANSYS are compared with that of CIDECT formula. By the linear regression analysis,the formula is revised in order to make its results more accurate.

Related Dissertations

  1. Research on the Mainframe System of Powder Mixed EDM and the Craft Experiment,TG661
  2. EDM Electrode Wear Mechanism and Control Research,TG661
  3. Finite Element Analysis and Structure Optimal Design for Combined Seal at Normal Temperature and Low Temperature,TH136
  4. Key Technologies of Dam-break Life Loss Risk Assessment Research,TV122.4
  5. Study on the Design and Biomechanical Behaviors of Individualized Artificial Knee Joint,R318.1
  6. Design of Testing Equipment for Electronic Products,TN06
  7. Multi-pin Internal Fixation of Calcaneal Fractures in Finite Element Analysis,R687.3
  8. Airborne radar antenna pedestal rapid design systems research and development,TN959.73
  9. Sham hose drum drive means and hydraulic system of the structure,TE973
  10. The magnetorheological damper mechanical properties and Gun Recoil,TB535.1
  11. Nonlinear Structural Dynamics Analysis and Optimization Design on Naval Gun Driver,TJ391
  12. Design and Analysis of Automatic Steel Pipes Butt Tool,U673.38
  13. Analysis on Unloading of Large Span Steel Structures and Research on Its Mechanical Analysis,TU391
  14. Study on Virtual Simulation Technology of Safety Valves Based on SolidWorks,TH134
  15. Optimized Design of New Style Mast of ZJ50L Drill Rig,TE923
  16. The Structure Design and Finite Element Analysis for the Light Hydraulic Support with Auxiliary Beam,TD355.4
  17. Analysis on Static-dynamic and Fatigue Characteristics of Metallurgical Overhead Traveling Crane,TH215
  18. Research of Deep Excavation Construction Process for Nearby Subway Section Action,TU753
  19. Study on Geometric Characteristics and Fininte Element Anslysis of Hositing Ropes,TD532
  20. Analysis of Gray Cast Iron Cutting Factors and Reasonable Choice of Tools,TG506
  21. Expandable screen -based research and effective performance analysis TWIP steel,TF762

CLC: > Industrial Technology > Building Science > Building structure > Metal structures > Various types of steel > Steel structure
© 2012 www.DissertationTopic.Net  Mobile