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Analysis and Simulation of Shape Memory Alloy Wire Rope Isolator

Zahedifar, Ali | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48850 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Naghdabadi, Reza; Arghavani Hadi, Jamal
  7. Abstract:
  8. Abstract Wire rope isolators are certain types of isolators that due to simplicity of structure and low maintenance costs are taken into consideration in various industries.A variety of different geometries and different features are provided so far that each have their own advantages and disadvantages. The main point is that in all cases they have large-scales. Therefore the usage of them in micro applications is not practical.Shape memory alloys are a class of materials with specific properties such as superelasticity and have inherent hysteresis. It is expected to achieve smaller dimensions suitable for use in micro-applications if they are used in the manufacturing of wire rope isolators. The aim of this study is the finite element analysis of shape memory alloy wire rope isolator. This subject requires recognizing the structure of wires and shape memory alloys. In this regard, first the introduction and behavioral characteristics of shape memory alloys will be discussed, then the structure of the wire ropes and governing analytical relations for stretching is examined. Then, using the finite element method, stretching of metal wire rope is analyzed. According to the logical result of finite element analysis stretch cords compared with analytical solution, the parameters of a metal cable isolator is obtained using finite element analysis. Afterwards super-elastic shape memory alloy tension in the wire rope is investigated using finite element analysis and the results are validated with experimental test results. After the reliability of the simulation, the parameters of a shape memory sample was calculated using the finite element method and then compared with the same metal wire rope isolator. The results indicate that the use of shape memory alloy in the manufacture of wire rope to reduce the size and mass are the type of this isolator
  9. Keywords:
  10. Shape Memory Alloy ; Superelasticity ; Finite Element Method ; Wires Rope ; Isolator Design ; Wire Rope Isolator

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