林业科学2012，Vol.48Issue(11)：83-86,4.
复配碱液处理榆木顺纹压缩应力-应变本构关系
Stress-Strain Constitutive Relations of Longitudinal Compressed Elm Wood with Compound Alkali Liquor Processing
摘要
Abstract
The elasticity and elastopiasticity variation laws of longitudinal compressing elm wood study could enhance wood one-way bending performance in order to achieve wood multi-dimensional bending. Juvenile and mature elm wood was longitudinal compressed after compound alkali liquor processing, then stress-strain constitutive relations were established. The results showed that at the beginning of compressing, the curves of stress and strain accorded with linear Hooke's Law, similarly, they satisfied a linear mechanic relationship in the elastopiasticity region. During longitudinal compressing, why juvenile elm wood has high variability , longitudinal compressive modulus of elasticity, stress and strain, which attribute to the degradation and extractive of elm wood chemical component after compound alkali liquor processing, were analyzed. Then basic variation laws of elasticity and elastopiasticity were found. In the elastic-plastic region, stress-strain curves displayed smoothly, in which folds were formed on wood cell walls.关键词
榆木/顺纹压缩/幼龄材/成熟材/应力应变规律Key words
elm/ longitudinal compressing/ juvenile wood/ mature wood/ variation laws of stress and strain分类
农业科技引用本文复制引用
张燕,宋魁彦,佟达..复配碱液处理榆木顺纹压缩应力-应变本构关系[J].林业科学,2012,48(11):83-86,4.基金项目
国家自然科学基金项目(31070489) （31070489）
黑龙江省攻关课题(GA09B202-07). （GA09B202-07）
