Evaluation on non-linear viscoelastic bending deflection of wood

✍ Scribed by J. Mukudai

• Publisher: Springer
• Year: 1983
• Tongue: English
• Weight: 586 KB
• Volume: 17
• Category: Article
• ISSN: 0043-7719
• DOI: 10.1007/bf00351831

✦ Synopsis

The viscoelastic deflection resulting from load increasing continuously from 30% stress level (linear range) to 60% stress level (non-linear range), i.e., within the proportional limit was measured over a period of 10 h. The experimental deflection could be predicted by a numerical method using model element constants which were an experimentally determined function of stress level. An 8-element model consisting of a Maxwell model and three Voigt models in series was used. The upper limit of stress level where a linear relation between creep strain and stress holds ranged from about 35% to 40%. Calculated deflections agreed well with experimental deflections.