期刊论文

A Study on the Tensile and Bending Mechanical Properties of Bamboo Particle/Wood Fiber Composite Board

中文

竹子学报

1000-6567

2014

33

3

17-21

10.3969/j.issn.1000-6567.2014.03.003

(SQ2009GJD2005258):国家科技部“科技人员服务企业行动计划”项目 (104-0133):中南林业科技大学***计划项目

本校为第一机构

由竹碎料与木纤维按一定方式复合而成的竹碎料/木纤维复合板的力学特性是影响其用途的主要因素。通过MWD-50型微机程控力学试验机和YD-28A型动态电阻应变仪等主要仪器设备,对竹碎料/木纤维复合板的拉伸和弯曲力学特性进行了检测与分析。研究结果表明,随外加载荷增加,竹碎料/木纤维复合板的纵向拉伸应变呈线性增加,横向拉伸应变以及弯曲应力与应变均呈非线性增加。由于竹碎料/木纤维复合板是一种非均质、各向异性的弹塑性材料,其拉伸泊松比和弯曲弹性模量均不为常量,拉伸泊松比的变化范围在0.15-0.18,弯曲弹性模量的变化范围在1 000-3 000 MPa。

The tensile and bending mechanical properties of bamboo particle/wood fiber composite board were detected by MWD-50 computer-program-controlled mechanics tester and YD-28A resistance strain gauge. The results indicated that with the increase of load, its longitudinal tensile strain increased linearly, and the transverse tensile strain, the bending stress and strain increased nonlinearly. As a kind of heterogeneous and anisotropic elastic-plastic material, its tensile Poisson＇s ratio and bending elasticity modulus of bamboo particle/wood fiber ...