Stress and Strain Analysis of Plywood Seat Shell

Drvna industrija

Hajdarević, Seid¹  Obućina, Murčo² 

[1] SveučiliÅ¡te u Sarajevu, Strojarski fakultet, Sarajevo, Bosna i Hercegovina;University of Sarajevo, Mechanical Engineering Faculty, Sarajevo, Bosnia and Herzegovina

关键词: laminated wood;    seat shell;    tensometric measuring;    strain gauges;    stress;    strain;    FEM;   

DOI  :  10.5552/drvind.2019.1825

学科分类：农业科学（综合）

来源: Sveuciliste u Zagrebu

【 摘 要 】

In this paper, the stress and strain analysis of common laminated wood seat shell is performed. Experimental stiffness evaluation is conducted by measuring displacement of the point on the backrest, and experimental stress analysis is carried out by tensometric measuring at the critical transition area from the seat to the backrest. Finite element analysis is carried out layer by layer with a “2D linear elastic model” for orthotropic materials. Good matching is found between numerical and experimental results of displacement. It is also shown that the results of the principal stress in the measurement points of the seat shell compare favourably with experimental data. The applied in-plane stress analysis of each individual veneer is not applicable for interlaminar stress calculations that are a significant factor in curved forms of laminated wood. Curved forms of laminated wood products require more complex numerical analysis, but the method can be used to achieve approximate data in early phase of product design.

【 授权许可】

CC BY