摘要
为探究竹材壁厚度方向的梯度特性,以产于云南的龙竹Dendrocalamus giganteus和产于浙江的绿竹Dendrocalamopsis oldhami为研究对象,将它们沿竹壁厚度方向分为若干个轴单板层,通过万能材料力学试验机测得竹材的表观弹性模量及2个轴单板层的弹性模量,并用拉格朗日插值法推算出其余任意层的弹性模量。通过复合材料力学方法构建了竹材表观弹性模量和各个轴单板层弹性模量之间内在关系的力学模型;由构建的力学模型推算得到的竹材表观弹性模量与试验机上测得的弹性模量基本吻合。
To analyze the characteristic of bamboo as composite material, taking Dendrocalamus giganteus and Dendrocalamopsis oldhami as specimen considered that bamboo wood was composed of several axis veneers along the thickness. The modulus of elasticity （MOE） of integrative bamboo and two axis veneers was tested by the apparatus of omnipotence test-bed while the MOE of the other veneers was evaluated by Lagrange interpolation. The results were as follows： A mechanical model of MOE between integrative bamboo and axis veneers was developed. Besides, the MOE of integrative bamboo acquired from the model above and tested by the apparatus of omnipotence test-bed was almost uniform. [Ch, 3 fig. 2 tab. 10 ref. ]
出处
《浙江林学院学报》
CAS
CSCD
北大核心
2007年第2期125-129,共5页
Journal of Zhejiang Forestry College
基金
浙江省科学技术重大攻关项目(2004C12018)
关键词
林业工程
竹材
复合材料
弹性模量
拉格朗日插值法
forest engineering
bamboo wood
composite material
modulus of elasticity
Lagrange interpolation
