The influence of shear strain on critical load bearing capacity. Determination of instability factor \( \varvec{k}_{\varvec{c}}^{\varvec{G}} \)

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• 作者：Krzysztof Śliwka
• 关键词：Wood constructions ; Shear strain ; Instability factor
• 刊名：Journal of Wood Science
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：62
• 期：1
• 页码：52-64
• 全文大小：730 KB
• 参考文献：1.Timoshenko S, Gere J (1961) Theory of elastic stability. McGraw-Hill International, London, pp 52, 131–132, 180–181
  2.Standard EN 1995 Eurocode 5 (2004) Design of timber structure Part 1-1: General-Common rules and Rules for buildings. European Committee for Standardization, Brussels, pp 43–44
  3.Osiowski J (1981) Introduction to the operational calculus. WNT, Warsaw, pp 335–343
  4.Jakubowicz A, Orłoś Z (1984) Strength of materials. WNT, Warsaw, p 248
  5.Piechnik S (1980) Strength of materials for civil engineering faculties. PWN, Warsaw, p 283
  6.Bielajew MM (1956) Strength of materials. MON, Warsaw, p 369
  7.Standard EN 338 (2009) Structural timber - Strength classes. European Committee for Standardization, Brussels, p 7
  8.Standard EN 12369-2 (2011) Wood-based panels - Characteristic values for structural design - Part 2: Plywood. European Committee for Standardization, Brussels, p 11
  9.Standard EN 12369-1 (2001) Wood-based panels - Characteristic values for structural design - Part 1: OSB, particleboards and fibreboards. European Committee for Standardization, Brussels, pp 9, 13
  
• 作者单位：Krzysztof Śliwka (1)
  
  1. Faculty of Civil Engineering and Architecture, West Pomeranian University of Technology, Szczecin, Poland
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Wood Science and Technology
  Materials Science
  Characterization and Evaluation Materials
  
• 出版者：Springer Japan
• ISSN：1611-4663

文摘

The paper is concerned with timber constructions. The paper presents a solution of a rod deflection differential equation. The rod deflection equation describes a compressed rod to which a transverse force is applied. The equation accounts for the influence of shearing forces on the magnitude of displacement. Based on the equation, the critical force and the rod deflection function at the rod’s initial curvature defined by a sinusoid were determined. Having found the rod deflection function and the critical force, a formula for the instability factor \( k_{c}^{G} \) was derived to account for the influence of shear strain. The paper demonstrates in which particular cases it is necessary to take into account the influence of deflection caused by shearing on the critical load bearing. Keywords Wood constructions Shear strain Instability factor