Dissertation > Excellent graduate degree dissertation topics show

Research on Bend-Shear-Shape Cu-SMA Damper

Author: ChengZhiQin
Tutor: LuoYing；ZhaoGuoQi
School: Jiangsu University
Course: Structural Engineering
Keywords: Shape Memory Alloy Mechanics model Bend-Shear-Damper Spectral analysis Structure vibration control
CLC: TU352.1
Type: Master's thesis
Year: 2006
Downloads: 88
Quote: 0
Read: Download Dissertation

Abstract


This thesis presents a study of mechanical property on a new type of Cu Shape Memory Alloy. Based on Muller model and Preisach model, a new mathematic constitutive relationship is set up for this SMA. Then, a SMA damper is designed by using pseudoelastic behavior of this SMA and the analysis of its dynamic property is carried out to evaluate its damping effectiveness experimently.First, the state-of-the-art researches of vibration control technologies on long-span spatial structures and the overview of SMA applications in structural vibration control are summarized. Then the experiment about mechanics property of CuZnAl SMA at the austenitic state is completed. A model is put forward to describe the characteristics of the reorientation among martensit evariants and the stress-induced martensite transformation microscopically. Moreover, it can describe the behaviors of the hysteresis and inner-hysteresis of the stress-strain macroscopically , it also can be used for engineering calculation.Based on above researches, a type of passive dissipation damper is proposed and its effective damping character is verified by the random vibration experiment under the excitation of white noise with limited band. Spectral analysis is adopted as the signal processing of the collected data to get energy transfer rate and acceleration transfer function. The damping effect is considered and its result shows this type of damper can decrease the vibration response effectively. Therefore this damper has an extensive application prospect.

Related Dissertations

  1. The Study on Rhinoceros Horn and Its Imitation,TS932.2
  2. M1 of CRH2-300 Train Finite Element Analysis and Travelling Comfort,U266
  3. Detection of Soil Information Based on Spectral Analysis and Digital Image Processing Technology,TP274
  4. Unseating Prevention of Highway Bridge with SMA Restrainers Under Earthquake Excitations,U441.3
  5. Remote Sensing Retrieval Model for Chlorophyll-a Concentration of Algae in South China Sea Coastal,TP79
  6. Electrolytic Coloration of Potassium Bromide Polycrystals and Mechanism of Production and Transformation of Color Centers,O781
  7. Electrolytic Coloration of Potassium Chloride Polycrystals and Mechanism of Production and Transformation of Color Centers,O781
  8. Shape Memory Effects and Biphases Toughness of NiMnGa-based High-temperature Shape-memory Alloys,TG139.6
  9. Constrained Recovery Characteristics Research of Fe-Mn-Si Shape Memory Alloy,TG139.6
  10. Research on the Acoustic Emission Characteristics of the Bond Interface between Prestressed Reinforcement and Concrete,TU378
  11. Shaking Table Experiment and Numerical Analysis of Base-isolated Structures with Superelastic SMA Helical Springs,TU352.12
  12. Research on Structure Design and Application of an Internal Fixator for Treatment of Fractures,R687.3
  13. Development of Hardware for Two Kinds of Digital Vortex Flowmeters,TH814
  14. Influences of Computer Work under Time Pressure on the EEG Characteristics,R318.0
  15. Study on Fretting Behavior of Surface-Modified NiTi Alloy and Nano-Indentation Size Effect of Iron,TG113
  16. The Research and Analysis about the Estimation Measures of the Potential Output and Output Gap in China,F224
  17. The Research about Aqueduct Bridge’s Vibration Reduction Technology of SNWTP by the Condition of Structure-liquid Couping,TV312
  18. Study of Photothermal Actuator Technology and the Development of Micro Photothermal Drive Mechanism,TH703
  19. Phytoremediation on Heavy Metal Contaminants in Sewage River Sediment,X53
  20. Development and Study of Micromanipulator with Two-Finger,TP242

CLC: > Industrial Technology > Building Science > Building structure > Special Structure > Anti - shock structure,disaster prevention structures > Shock, isolation, and explosion-proof structure
© 2012 www.DissertationTopic.Net  Mobile