Dissertation > Excellent graduate degree dissertation topics show

The Application Technology of the Incremental Perturbation Method and the Research of Buckling Analysis with the Shanley Model

Author: HeJianZuo
Tutor: LiJun
School: Qingdao Technological University
Course: Structural Engineering
Keywords: Shanley Model generalized incremental perturbation method incremental strain-controlled perturbation method buckling analysis
CLC: TB125
Type: Master's thesis
Year: 2008
Downloads: 10
Quote: 0
Read: Download Dissertation

Abstract


The study summarizes and refines the former research institute, proposing to use the incremental perturbation method flexibly. That is, while taking advantage of the analysis veracity of incremental perturbation method, the applicable character of generalized matrix is considered thoroughly for structural analysis. Then, the generalized incremental perturbation method is constructed. The method can achieve automatic controlling load or displacement. Simultaneously, for tracing the equilibrium path, the incremental strain-controlled perturbation method is introduced for ensuring the stiffness consistency. In order to show reliable scientific evidence, the detailed formula deduction is had to construct the generalized incremental perturbation method. Meanwhile the incremental strain-controlled perturbation method is combined to analysis the elastic and elastic-plastic buckling of Shanley Model for numerical example. The program is compiled by FreeBasic compiler with compatibility of C and QB. The results are indicated, and the rationality of the proposed strategy is validated. The remarks are concluded as follow:1、Using the generalized matrix and the incremental perturbation method, the generalized incremental perturbation method can be constructed. The load incremental perturbation coefficient or displacement incremental perturbation coefficient can be controlled automatically in the method.2、Based on the generalized incremental perturbation method, the numerical simulation of Shanley Model for the elastic buckling path is carried. The numerical results demonstrate that the algorithm of following the generalized incremental perturbation method is correct and effective.3、The matter is noticed that the analysis is still going on while the constitutive relations of material is gone against. This result demonstrates that to make sure of the numerical nonlinear analysis correct and effective, it is necessary to check stress-strain relations of all the elements until everyone satisfy the constitutive of material.4、If the incremental strain-controlled perturbation method is applied from the neighborhood of critical point on the elastic-plastic buckling path, an algorithm deficiency problem can be solved.5、It is necessary to select various kinds of algorithms. Choosing the generalized incremental perturbation method or the incremental strain-controlled perturbation method becomingly will contribute to the nonlinear buckling analysis.The purpose of the study is using new strategy to research the elastic-plastic buckling behavior and the post buckling path. Applying the strategy into the Shanley Model, the results proper or not will affect the application to complicated structure model directly. The conclusion provides a theory basis for the structure designer and technician of structural simulation. A required theory method in structural engineering field will be accepted.

Related Dissertations

  1. Preparation of composite honeycomb sandwich structure and mechanical properties of,TB332
  2. Comparative Analysis About the Sructural Behavior of Wiggins Gas Holders of Different Capacities,TU31
  3. Bridge Swivel Construction and Stability Analyses of Beijing Olympic Games,U445.4
  4. The Research on Integral Stability of the String Truss Structure,TU399
  5. The Study on Carrying Capacity of Spatial Steel Tubular Truss with Inverted Triangle Section,TU392.3
  6. Research for Nonlinear Vibration Features and Windproof Stability of Catenary Systems,U225.1
  7. Stability Analysis of Long-span Concrete-filled Steel Tube Arch Bridge,U448.22
  8. Buckling Behavior of Plant Stems,S311
  9. Research on Prestress of the Prestressed Steel Stayed Columns,TU394
  10. Overall Stability Research of Steel I-beams under Combined Bending and Torsion,TU392.1
  11. Load-Carrying Capacity Analysis of the Parabolic Arch Supported by Cable Under Certain Condition,TU399
  12. Structurl Property Analysis and Optimization of Rough Terrain Crane Boom,TH213.6
  13. Based on BP neural network stability of laminated composite shells optimization,TB33
  14. Large LNG storage tank dome structural stress analysis,TE972
  15. Load-carrying Capacity of Pre-stressed Laminated Strand Lumber,TU531.2
  16. Finite Element Analysis for the Residual Stress of Welded Box Column,TU391
  17. The Stability Analysis of Xinjiang Bridge Tower,U41
  18. Design and Optimization for Wind Power Lifting System of Crawler Crane,TH213.7
  19. The Stability of the Cold-formed 60° Equilateral Single Angle under Compression,TU392.1
  20. Influence Analysis of Pipe Truss Structure’s Defects on Construction Condition,TU391

CLC: > Industrial Technology > General industrial technology > Engineering and basic science > Engineering Mechanics > Engineering plastic mechanics,engineering elasticity
© 2012 www.DissertationTopic.Net  Mobile