Dissertation > Excellent graduate degree dissertation topics show

Transient-dynamic-FEM Analysis of the Course of Vibration-driving the Thin-wall Large-diameter Cylinder Structure

Author: XuTing
Tutor: SunKeLi
School: Tianjin University
Course: Port Coastal and Offshore Engineering
Keywords: Large cylindrical structure Stress wave Vibration sinking Transient dynamics Soil Dynamics
CLC: U617.9
Type: Master's thesis
Year: 2007
Downloads: 152
Quote: 2
Read: Download Dissertation

Abstract


Inserted into the large cylinder has a simple form, reasonable force, the construction is convenient, and low cost, very suitable for the needs of our deep-water port project at this stage of large-scale development. Tianjin University in combination with other research institutes over the years this structure under the influence of the wave, tidal and sediment erosion and deposition load carrying and failure mechanism in the form of a number of studies, the formation of a more mature analysis methods, and successfully promote the implementation. However, the mechanism of interaction between the cylinder and the soil in the axial vibration sinking construction process exciting force, the Flashlight stress strain and cylinder into the problem has been the lack of a comprehensive and in-depth study, which restricted the the further application of large cylindrical structure. In this paper, the elastic stress wave theory, the theory of soil dynamics and nonlinear numerical analysis methods, combined with data of the Yangtze Estuary Deepwater Channel Regulation Phase II Diameter Cylinder testing section, cylinder vibration sinking, the establishment of a non- linear spring element numerical model. And to further explore the feasibility of a block element simulation of large cylindrical structure vibration sinking continuous process. The main research work are as follows: 1. Analysis of large cylindrical vibration down, Turkey structure interaction mechanism, revealing a large cylindrical vibration sinking and Flashlight stress typical influencing factors. Combined with vibration sinking field experiments, the application of stress wave theory, the establishment of a large cylindrical structure under vibrating load transient dynamics of nonlinear viscoelastic-plastic spring element numerical model, the vibration of the large cylindrical sink the whole process of calculation and analysis . 3 with the actual engineering of large cylindrical structure into the concrete cylinder control stress analysis to determine the stress-strain state of the cylinder vibration sinking process, and provide the basis for the structural design of the cylinder. 4 large cylindrical optimize the the sinking construction process exciting force parameters, determine Flashlight structural stress optimal sinking construction dynamic parameters. Explore the application entity element simulation of soil sinking large cylindrical vibration element method. ALE method to simulate large deformation of soil, and LS-DYNA symmetric penalty function method and the contact surface search algorithm, a more viable entity element simulation of soil the large cylindrical sinking nonlinear finite element method of coupling analysis, and the establishment of the calculation model.

Related Dissertations

  1. Study on the Stress Wave Propagation Attenuation Laws in the Elastoplastic Coal and Rock,TD311
  2. Stress Wave Propagation in Concrete Structure under Impact Loading,TU528.01
  3. Rasearch on Finite Element Analysis of Modified Helical Gear Pair for Crane Reducer,TP391.7
  4. Performance Analysis of MC Nylon Helical Gear Based on the Finite Element Method,TH132.41
  5. Dynamic Analysis and Simulation of Arresting Cable,U674.771
  6. Design and Research of the High Pressure Particle Mud Valve and the Particle Process System Used in the Particle Impact Drilling Technology,TE242.6
  7. Pile Integrity Testing Based on Wavelet Analysis,TU473.1
  8. A Study on Stress Wave Method in Prestressed (Non-bonded) Anchor Cable Structure Detection of Slope,TU476
  9. The Integrity Testing Methods Research on the Working Piles of High-piled Wharf,U655.55
  10. 3D Elastic-Plastic Static and Dynamic Numerical Analysis of Stability of Embedded Large Cylindrical Breakwaters,U656.2
  11. The Vibration Reduction Performance Analysis on Ladder Track System,U213.2
  12. A Preliminary Study on 3D Reconstruction of Inner Decay in Log Cross-section Based on 2D Image of Stress Wave,TP391.41
  13. The Research on Analysis of Dynamic Performance and Structural Optimization for Welded Metal Bellows of Dry Gas Seal,TG457
  14. The Research of Cold-working Die Steel Cr12MoV Grinding Mechanism,TG142
  15. 316L stainless steel powder and iron -based alloy powder compaction of a high-speed,TF123.1
  16. The Improvement of Weight Elimination for the Forecast of the Blasting Wave Propagation in Jointed Rock Masses,TU452
  17. The Numerical Simulation Study on Dynamic Nodestruc-tive Detection in Anchorange Quality of Rock Bolts,TG115.28
  18. Dynamic Analysis and Application of Wire Rope Sucker Rod,TE933.2
  19. Multi-body Dynamics Simulation Analysis of Drive Axle of Wheel Loader,TH113
  20. Experimental Study on Explosive Stress Wave and Blasting Effect in Coal Mass,TD235.1
  21. Study on the Low Frequency Signal Anchor Bolt of Dynamic Response Charateristics,TD353.6

CLC: > Transportation > Waterway transport > Waterway Engineering > Renovation project > Renovation of buildings
© 2012 www.DissertationTopic.Net  Mobile