Calculation of Optimal Length for Skyline

Authors

  • I. Rudko Ukrainian National Forestry University, Lviv, Ukraine
  • B. Bakay Ukrainian National Forestry University, Lviv, Ukraine
  • L.G. Bont Swiss Federal Institute for Forest, Snow, and Landscape Research (WSL), Switzerland
  • Y. Romasevych National University of Life and Environmental Sciences of Ukraine, Ukraine
  • S. Horzov Ukrainian National Forestry University, Lviv, Ukraine

DOI:

https://doi.org/10.31926/but.fwiafe.2022.15.64.1.6

Keywords:

single span skyline, minimal cable tension, optimal length, catenary, deflection

Abstract

As important for the design of cable logging systems both theoretically and practically, the optimization problem regarding the optimal length of the skyline was determined. In the process of modeling the shape of the sagging curve of the holding cable, the objective function is constructed in the form of a transcendental equation, whose roots are determined by iterative and graphical-analytical methods. A numerical analysis of the problem is carried out. To calculate the optimal length of the skyline, a software algorithm, an engineering formula, and nomograms are proposed.

Author Biographies

I. Rudko, Ukrainian National Forestry University, Lviv, Ukraine

Department of Forest Engineering, General Chuprynka St 103, Lviv 79057

B. Bakay, Ukrainian National Forestry University, Lviv, Ukraine

Department of Forest Engineering, General Chuprynka St 103, Lviv 79057

L.G. Bont, Swiss Federal Institute for Forest, Snow, and Landscape Research (WSL), Switzerland

Sustainable Forestry Group, Zuercherstrasse St. 111, Birmensdorf, Zurich CH 8903 

Y. Romasevych, National University of Life and Environmental Sciences of Ukraine, Ukraine

Department of Design and Engineering, Heroiv Oborony St 12, building 11, Kyiv 03041

S. Horzov, Ukrainian National Forestry University, Lviv, Ukraine

Department of Forest Engineering, General Chuprynka St 103, Lviv 79057

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Published

2022-06-28

Issue

Vol. 15(64) No. 1 (2022)

Section

FORESTRY