Practical approach to optimum design of steel tubular slip-joint power transmission poles

Date

2003-01-01

Author

Dicleli, Murat

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

115
views

0
downloads

Steel tubular poles are employed in large numbers when used for power transmission and consequently their most economical design is desirable. The pole weight affects the overall cost of a system of steel tubular pole structures considering the cumulative effects of material, manufacturing, transportation and erection costs. Therefore, an optimal design may be achieved by designing the lightest possible slip-joint pole which fulfills the geometric and limit states criteria under specified loading conditions. In this research, a computer-aided approach, for the optimum design of steel tabular slip-joint poles is developed. The pole weight is optimized to satisfy the specified geometric limits and limit states design criteria. The optimization procedure uses a simple algorithm to vary the pole diameter and its taper within the specified geometric limits. This results in a total of 121 poles with different geometric properties. For each pole, first the location of the maximum design stresses within each segment of the slip-joint pole is determined. Maximum stresses are then calculated and used to design the poles to satisfy ultimate strength and local buckling criteria. The serviceability limit states criteria for wind-induced vibrations; the effect of wind drag and the second order effects due to the presence of axial loads are included in the analyses. Using the developed optimization algorithm, simple equations and charts are developed for the optimal design of steel tubular slip-joint poles of various steel grade, and length and loading conditions.

URI

https://hdl.handle.net/11511/55312

Conference Name

8th International Conference on Computer Aided Optimum Design of Structures

Collections

Department of Engineering Sciences, Conference / Seminar

Suggestions

OpenMETU
Core

Measurement of brushless dc motor characteristics and parameters and brushless dc motor design Şahin, İlker; Ertan, Hulusi Bülent; Department of Electrical and Electronics Engineering (2010) The permanent magnet motors have become essential parts of modern motor drives recently because need for high efficiency and accurate dynamic performance arose in the industry. Some of the advantages they possess over other types of electric motors include higher torque density, higher efficiency due to absence of losses caused by field excitation, almost unity power factor, and almost maintenance free construction. With increasing need for specialized PM motors for different purposes and areas, much effort...
Development of high strength aluminum matrix composite backing plates for ballistic armor Durmaz, Tayfun; Kalkanlı, Ali; Department of Metallurgical and Materials Engineering (2017) Recently, aluminum and aluminum alloys have gained great importance in engineering applications by the help of technological developments. Today, it is possible to see aluminum alloys in very different sectors of industry because of their superior properties. Some of these important properties are high specific strength, lightness and ductility. In addition, it has low density, high corrosion resistance and high mechanical properties that make aluminum crucial in transportation, construction, packaging, hou...
Experimental determination of tool wear in routing and trimming of CFRP composites Peker, Zühal; Akkök, Metin; Kılıç, S. Engin; Department of Mechanical Engineering (2015) In order to fulfill growing demand for lighter aircraft, Carbon fiber reinforced polymers (CFRP) have been developed, which differ from metals with regards to their machinability characteristics. The main problem in machining process is the damage caused by delamination of CFRP materials which need to be both cut and shorn of fibers at the same time, since they are remarkably abrasive in nature. This research aims at accessing the most appropriate cutting condition with less tool wear in routing and trimmin...
Electrochemical formation of Al-Sc alloy in molten salt Polat, Çağlar; Karakaya, İshak; Department of Metallurgical and Materials Engineering (2019) Al-Sc alloys have better mechanical properties in comparison to commercial aluminum alloys. The aim was to produce Al-Sc alloys containing at least 2wt % scandium by electrochemical reduction of the byproducts such as ScF3 or the alternative compounds obtained from hydrometallurgical processing of low grade lateritic nickel in this thesis. Electrochemical production of Al-Sc alloy in pure molten CaCl2 and CaCl2-NaCl mixtures was studied for this purpose. The graphite-liquid aluminum-CaCl2 or CaCl2-NaCl inte...
Mechanical properties of Ti6Al4V parts produced by electron beam melting and topology optimization in different building directions Temel Yiğitbaşı, Selen; Konukseven, Erhan İlhan; Gülcan, Orhan; Department of Mechanical Engineering (2018) Titanium and its alloys are used in various industries due to their mechanical properties such as high corrosion resistance, high strength and low-density. However, utilization of parts made of titanium are limited since the lead time for raw material is long, they are hard to machine, and the machining costs are high. On the other hand, it is possible to produce complex parts with powder material by additive manufacturing techniques, and there is a growing interest in research on these new technologies. El...

Citation Formats

M. Dicleli, “Practical approach to optimum design of steel tubular slip-joint power transmission poles,” DEARBORN, MI, 2003, vol. 13, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55312.