桉树枝丫材压缩特性的试验与分析  

Compression Characteristics of Eucalyptus Branches

作　　者：于航[1] 刘晋浩[1,2] 

机构地区：[1]东北林业大学,黑龙江哈尔滨150040 [2]北京林业大学,北京100083

出　　处：《木材工业》2016年第3期25-28,共4页China Wood Industry

基　　金：国家林业局"引进国际先进农业科学技术计划"("948"计划)"车载式采伐剩余物打捆机关键技术引进"(2013-4-19);中央高校博士研究生自主创新基金项目"基于林业生物质打捆机的能源材料压缩特性研究"(2572014AB24)

摘　　要：林木枝丫材的压缩收集与运输,对降低收集运输成本、提高运输装载率至关重要。为了对林木压缩收集装置的结构设计提供依据,对桉树枝丫材进行压缩试验,并建立压缩特性模型。结果表明:随着压强的增大,桉树枝丫材的压缩位移和压缩密度增加,体积模量随之增大;理论上最佳压缩密度为169.349 kg/m3,最佳压强为0.012 MPa。The authors designed a tree branch collecting and conveying device and selected eucalyptus branches at 52.76% of moisture content and 10-40 mm in diameter to conduct a compression experiment using 50 mm/min compression speed and 50 kN for the highest loading force. They built three compression models to analyze the relationship among pressure, displacement, compression density and bulk modulus of the eucalyptus branches. They proposed that the optimum parameters were 169.349 kg/m3 of compression density and 0.012 MPa of pressure so as to keep the branches with their original state and maintain their value for subsequent processing.

关 键 词：桉树枝丫材 压缩特性 模型 压强 位移 密度 体积模量 

分 类 号：TS612[轻工技术与工程]