Dissertation > Excellent graduate degree dissertation topics show

Dynamic Response Analysis of Honeycomb Sandwich Structure under Low-Velocity Impact

Author: ChenShiZhe
Tutor: ShuXueFeng
School: Taiyuan University of Technology
Course: Solid Mechanics
Keywords: Honeycomb structure Quasi-static compression Low velocity impact Honeycomb sandwich structure Numerical Simulation
CLC: O347.3
Type: Master's thesis
Year: 2011
Downloads: 165
Quote: 0
Read: Download Dissertation

Abstract


With the deepening of modern science and technology development, materials, structural, mechanical and other areas of research, the honeycomb sandwich structure as a new type of structure in front of people. The new structure has the advantages of light weight, high strength, energy absorption and sound insulation. Honeycomb sandwich structure has its advantages are widely used in the aerospace, automotive, construction and packaging engineering fields. Therefore, the study of the mechanical properties of the honeycomb sandwich structure has been widespread concern in the engineering and academic fields. Showed good energy absorption characteristics of honeycomb sandwich structure is subject to dynamic impact loading, this article first of all through the cellular structure of the quasi-static surface compression experiments to understand the mechanical properties of the honeycomb structure, then from two experimental and finite element numerical analysis honeycomb sandwich beam structure dynamic response under low velocity impact, the main work and the results are as follows: 1. cellular structure of the quasi-static compression experiment. The experiments carried out on the honeycomb structure of the different sizes of different matrix material static compression experiments, to study the plastic deformation mode and energy absorbing effect of the honeycomb structure. The results show that: the the honeycomb size of the different impact the performance of the cellular structure of the overall pressure stage, cellular buckling occurs first in the upper part of the large size of the cellular deformation under load, buckling load is relatively stable. Small size cellular to show holistic destruction loads. 2 honeycomb sandwich beam structure of low impact experiments. The experiment by the DHR-9401 drop hammer impact load testing machine experiment analysis of the deformation and failure mechanisms of different drop height impact of honeycomb sandwich beam structure. Experimental results show that: under impact loading, plastic deformation of the plastic deformation of the honeycomb structure Bi Mengpi more significant damage to the structure of the honeycomb sandwich beam diffusion, with drop height increase, the plastic deformation of the skin along the surface The inner direction, and the plastic deformation of the honeycomb structure is mainly along the development of the cellular plane direction. Numerical analysis with ANSYS finite element software. The the simulated deformation mode and low-speed impact experiments results are consistent von-mises stress distribution law of the skin and cellular structure of the simulation results as well as the deformation characteristics of the structure to verify the law of honeycomb sandwich beam experiments analyze the dynamic response of the structure .

Related Dissertations

  1. The Setting Bases of Working Pressure in LNG Systems and Orthogonal Experiment Design of Heat Exchangers,TQ051.5
  2. Study on Springback of High-Strength Steel Stamping,TG386
  3. Numerical Simulation and Experiment on Hydroforming of Cups with Controllable Radial Pressure,TG386
  4. Research on Technology and Mechanism of Joining Cemented Carbide to Carbon Steel,TG454
  5. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  6. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  7. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  8. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  9. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  10. Numerical Simulation of Biomass Direct Reburning,TK16
  11. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  12. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  13. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173
  14. Experimental Study and Numerical Simulation on Aerodynamic Field of Tangential Bias Swirl Burner,TK223.23
  15. Characteristic Study of Combustion in Central Reverse Flame Chamber,TK223.21
  16. Numerical Simulation and Contrastive Analysis of Labyrinth Seals and Leaf Seals,TK263.2
  17. Numerical Study on Phosphorus Distribution in Water Environment of the Three Gorges Reservoir,X832
  18. The Design and Performance Simulation of External Valve Small Displacement Pump,TE933.3
  19. Analysis of the Impact of Tailings Dam Stability under Seepage Role,TV649
  20. Study on Hydraulic Fracturing of Low Permeability Reservoir,P618.13
  21. Numerical Simulation and Experimental Study of Air-Assisted Sprayer of Orchard,S491

CLC: > Mathematical sciences and chemical > Mechanics > Solid Mechanics > Deformation solid dynamics > The strength of the materials under impact loading
© 2012 www.DissertationTopic.Net  Mobile