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Modeling Mechanical Behavior Of Multilayer Synthetic Fiber Ropes Under Axial Loading

Ghasemiyeh, Mohammad | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41366 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Ghoreishi, Reza; Behzad, Mehdi
  7. Abstract:
  8. Synthetic fiber rope mooring systems, are increasingly finding applications as offshore oil exploration goes to deeper sites. Synthetic fiber cables provide numerous advantages over steel mooring lines, particularly in deeper water that large self-weight of steel lines is prohibitive, synthetic fiber ropes could be a good selection for mooring system. In order to reduce the need for expensive tests under varying parameters and operating conditions it is essential to be able to model the mechanical behavior of very long synthetic mooring lines. The purpose of modeling mechanical behavior of cables is to determine global stiffness matrix Coefficients to correlate the forces and strains for such a structure. Several authors have been developed some analytical and numerical models which are different from their simplifying assumptions, formulations and required input data. In this research, mechanical behaviors of synthetic fiber cables which have complex, hierarchical and multilayer structure have been studied. Also, a software on the basis of numerical algorithm has been developed for calculation of stiffness matrix arrays of a fibrous structure with a large number of twisted component under axial loading. The output of the software is the cable stiffness matrix which can be determined for linear and nonlinear state from stress-strain material curve of the cable. Finally the software results have been validated by comparison with experimental results from some different cables
  9. Keywords:
  10. Modeling ; Stiffness Matrix ; Multilayer Structure ; Synthetic Fibers ; Fiber Ropes

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