Dissertation > Excellent graduate degree dissertation topics show

Research on the Relationship between Structure and Mechanical Properties of Branching System of the Family Palmae

Author: LiJing
Tutor: LiuWangYu
School: South China University of Technology
Course: Mechanical Manufacturing and Automation
Keywords: Palm plants Branching system architecture Mechanical Properties Bionic Design
CLC: S792.91
Type: Master's thesis
Year: 2011
Downloads: 31
Quote: 0
Read: Download Dissertation

Abstract


In the billions of years of evolution of life and the process of co-evolution , organisms have formed the structure of the largest environmental adaptability , and therefore the formation of plant branching system to consider multiple features an optimized process is under the influence of the external environment . The coastal palm plants branching system structure and its growth environment there must be some kind of contact , through theoretical , experimental and numerical simulation methods to explore the relationship between the structure and mechanical properties of palm plants branching system . In order to simulate the growth trend of the branches of the palm plants , to establish branches incremental model , starting from the energy point of view , to obtain the relationship between the branching angle and total deformation energy macro external force on three typical force the case to discuss the results : branches under different external force environmental role , the total deformation energy minimization conditions different branch angle . Palm plants own genetic factors in the branching process and the role of the external environment has formed a specific branching angle , the king brown simplify model deformation analysis of its trunk , the results show that : the wind load is very small , branch angle and yaw angle trunk impact is small; wind load is large , the collateral by changing the branch angle to reach uninstall the purpose to avoid sex umbrella wind wheel anti- typhoon larger reference . The same time , the support of the equivalent modulus of the sandwich structure theory , king brown trunk equivalent modulus compared with the two structures composed of a single material , display the king brown trunk sandwich structure with a high specific strength and stiffness , provide a new idea for the tower of the wind turbine blade structure biomimetic design . Further, by the environmental scanning electron microscope to obtain the microscopic pictures of various parts of the king brown , combined with the physiological functions of the various parts of the volume fraction and the mechanical properties of the structure of the various parts of the vascular bundle has a large impact , extracted a simplified structure of the vascular bundles and establishing model , theoretical analysis and numerical simulation results show that : the main load-bearing part of vascular , and verify that the relative density of the porous material properties play a decisive role , in which the Ministry of vascular bundles of this structure can be used for material biomimetic design .

Related Dissertations

  1. Research on Welding Characteristics of CO2 Laser-GMA Hybrid Welding for Ultra-Low Carbon Bainitic Steel,TG456.7
  2. The Research on Extrusion Parameters Through the Plate Billet of Magnesium Alloy,TG379
  3. Research on Structure and Mechanical Property of Hook and Loop Fastener,TE931.2
  4. Processing and Characterization of Short Fiber-reinforced Aluminium Matrix Composites,TB333
  5. On Microstructures and Properties of Recycled Composites,TB331
  6. Using the finite element method Ti-Si-N superhard nanocomposite mechanical properties of the surface,TB383.1
  7. Bioploymer/Layered Double Hydroxide Nanocomposites: Preparation, Structure and Properties,TB383.1
  8. Effects of Continuous Steam Explosion on the Mechanical Properties of PBS / Vegetable-fiber Composites,TB332
  9. Numerical Prediction of Property of Fiber Reinforced Polymer Composite,TB332
  10. Experiment Study on the Austempered Ductile Iron (ADI) of High Strength and Toughness,TG163
  11. Microstructure and Mecha Nical Properties of Dispersion Strengthening 20 Steel by TiO2 Particles,TG142.1
  12. Research on Squeeze Casting Technology for High Strength and Toughness Aluminum Alloy Parts,TG249.2
  13. Effects of Ce on the Microstructure and Properties of 202 Stainless Steel,TG142.71
  14. Of multistage solid solution heat treatment on the microstructure and properties of 7150 aluminum alloy,TG156.94
  15. Ti62421s high temperature properties of titanium Organization,TG132.32
  16. Tensile, bending , compression, and top stretch deformed state creep properties of leather,TS57
  17. Properties of a Rhizopus Recombinant Lipase and It’s Application in the Bread and Dough Systems,TS213.2
  18. The Influence on the Main Physical & Mechanical Properties of Rattans by Different Modifications,S781
  19. Research on Experiment and Evaluation of Sewage Sludge Used as Cover Material in MSW Landfill,X703
  20. Xi'an ground fissures with the physical and mechanical properties of rock,P642.26

CLC: > Agricultural Sciences > Forestry > Forest tree species > Broad-leaved trees > Palm, betel nut
© 2012 www.DissertationTopic.Net  Mobile