CRITICAL BUCKLING LOAD OF THE SIDE WALLS OF CABINET FURNITURE

Year 2019, Volume: 37 Issue: 4, 1384 - 1395, 01.12.2019

Jerzy Smardzewskı

Abstract

Loss of furniture stability may constitute a rapidly occurring, direct hazard to the user's life or health. Studies conducted to date have concerned the effect of the type of material and method of back wall attachment on its stability. In contrast, practically no analogous data are available on the stability of side walls. In the case of loading with a vertical force applied on a furniture item supported at three corners all the elements are subjected to torsional strain. However, the static pattern changes when the structure is supported at four corners. Then loading of a piece of furniture with a vertical force results in slight displacements in the direction of the acting force, whereas buckling and considerable deflections are perpendicular to the direction of that load. This has a significant effect on side wall stability. For this reason it was decided in this study to determine the effect of side wall structure on stability (buckling) and postbuckling behaviour of side walls in cabinet furniture. The analyses consisted in numerical calculations using the Finite Element method. Three types of side wall structures were used: particleboard, honeycomb panel and board-on-frame. Values of critical forces, lateral deflections and normal stresses in the direction of the acting load were calculated. Testing results confirmed that the honeycomb panel provides the most advantageous structure for side walls.

Keywords

Furniture, side wall, honeycomb, buckling, postbuckling, numerical analysis.

References

• [1] BS EN 310:1993 Wood-based panels. Determination of modulus of elasticity in bending and of bending strength.
• [2] BS EN 322:1993 Wood-based panels. Determination of moisture content.
• [3] BS EN 323:1993 Wood-based panels. Determination of density.
• [4] Ganowicz R., Dziuba T., Ożarska-Bergandy B. (1978) Theorie der Verformungen von Schrankkonstruktionen. Holztechnologie 19, 100–107.
• [5] Łodygowski T., Kąkol W. (2003) Metoda elementów skończonych w wybranych zagadnieniach mechaniki konstrukcji inżynierskich [The Finite Element Method applied in selected problems in mechanics of engineering structures]. Wydawnictwo Politechniki Poznańskiej, Poznań.
• [6] Smardzewski J. (2015) Furniture Design, Springer Cham Heidelberg New York Dordrecht London, © Springer International Publishing, Switzerland.
• [7] Smardzewski J., Dzięgielewski S. (1993) Stability of cabinet furniture backing boards. Wood Science and Technology 28, 35-44.
• [8] Smardzewski J., Lewandowski W., İmirzi H.Ö. (2014) Elasticity modulus of cabinet furniture joints. Materials and Design 60, 260–266.
• [9] Smardzewski J., Rzepa B., Kıliç H. (2016) Mechanical Properties of Externally Invisible Furniture Joints Made of Wood-Based Composites. BioResources 11(1), 1224-1239.
• [10] Timoshenko S., Woynowsky-Krieger S. (1987) Theory of plates and shells. Second edition. McGraw-Hill Book Company, New York.
• [11] Yamaguchi E. (1999) Basic Theory of Plates and Elastic Stability. Structural Engineering Handbook Ed. Chen Wai-Fah. Boca Raton, CRC Press LLC.