Multi-segment continuous cables with frictional contact along their span

Date

2017

Author

Demir, Abdullah

Metadata

Show full item record

Item Usage Stats

239
views

0
downloads

Cables are highly nonlinear structural members under transverse loading. This nonlinearity is mainly due to the close relationship between the final geometry under transverse loads and the resulting stresses in its equilibrium state rather than the material properties. In practice, the cables are usually utilized as isolated single-segment elements fixed at the ends. Various studies and solution procedures suggested by researchers are available in the literature for such isolated cables. However, not much work is available for multi-segment continuous cables with multiple intermediate supports between its two ends. In this thesis, a solution procedure based on contact mechanics is proposed for the non-linear interaction between a multi-segment continuous cable and an elastic structure such as a plane truss. The intermediate supports represent the target nodal points of the structure where the cable is likely to come into contact with the structure. Therefore, the intermediate supports of the multi-segment continuous cable are assumed to be frictional and elastic. Moreover, the cables are not constrained to be in contact with each of these target supports. Actual support locations along the cable are determined in the course of the iterative non-linear analysis. A cable and a bar element are formulated mathematically with their geometric nonlinearities. The coupling is established and non-linear interaction between the two structures is determined by the principles of contact mechanics. Proposed mathematical model is coded and verification analyses are done with a sample model composed of a cable and a truss structure. A number of case studies are carried out for a real-life application of truss structures post-tensioned by a continuous cable.

Subject Keywords

Cables., Cable structures., Friction materials., Contact mechanics., Structural engineering.

URI

http://etd.lib.metu.edu.tr/upload/12621232/index.pdf
https://hdl.handle.net/11511/26527

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Form finding and structural analysis of cables with multiple supports Demir, Abdullah; Polat, Mustafa Uğur; Department of Civil Engineering (2011) Cables are highly nonlinear structural members under transverse loading. This nonlinearity is mainly due to the close relationship between the final geometry under transverse loads and the resulting stresses in its equilibrium state rather than the material properties. In practice, the cables are usually used as isolated single-segment elements fixed at the ends. Various studies and solution procedures suggested by researchers are available in the literature for such isolated cables. However, not much work ...
Theoretical and experimental determination of dynamic friction coefficient for a cable-drum system BAYAR, GÖKHAN; Konukseven, Erhan İlhan; Koku, Ahmet Buğra (2010-09-18) Cable-drum systems are utilized to convert the rotary motion of a drum into a translational motion of a linear stage connected to the cable. These systems are preferred where low backlash and high stiffness is expected. They are commonly employed in machines like elevators, photocopy machines, printers, plotters etc. For machines having long working ranges, cable-drum systems employing a high resolution encoder offers a practical low cost alternative in position sensing. In most traditional machines and equ...
Developing replaceable members for steel lateral load resisting systems Bozkurt, Mehmet Bakır; Topkaya, Cem; Department of Civil Engineering (2017) Steel structures utilize lateral load resisting systems to provide sufficient strength, stiffness and ductility. Damaged structures need to be either demolished or retrofitted to recover their initial properties after a major earthquake. In steel structures, damage is concentrated to predefined fuse members and most other members are designed to behave elastic under seismic events. In buckling restrained braced frames (BRBFs) and eccentrically braced frames (EBFs), the fuse members are well defined and can ...
Finite element analysis of composite laminates subjected to axial and transverse loading Baskın, İsmail Cem; Akyüz, Uğurhan; Department of Civil Engineering (2004) This thesis focuses on the investigation of behavior of thick and moderately thick laminates under transverse and horizontal loading for different boundary conditions and configurations. An efficient finite element solution is proposed for analyzing composite laminates. Based on a combination of composite theory and 3-D Elasticity Theory, a 3-D finite element program is developed in MATLAB for calculating the stresses, strains and deformations of composite laminates under transverse and/or horizontal loadin...
A three component force transducer for reinforced concrete structural testing Canbay, Erdem; Tankut, T (Elsevier BV, 2004-01-01) The design, manufacture and calibration of two special force transducers, capable of measuring the axial force, shear, and bending moment at the base of a structural column are presented. The special force transducers were fabricated to measure the reactions at the base of the exterior columns of a reinforced concrete three-bay, two-story test specimen. The force transducers had the following capacities: 35 kN for axial load, 4 kN for shear, and 3 kN in for bending moment. These values include a safety fact...

Citation Formats

A. Demir, “Multi-segment continuous cables with frictional contact along their span,” Ph.D. - Doctoral Program, Middle East Technical University, 2017.