文献类型：期刊文献

中文题名：单板层积材热压升温曲线数值模拟的研究

英文题名：Numerical simulation of hot-press temperature curve of laminated veneer lumber

作者：余养伦[1] 于文吉[1] 江泽慧[1] 王天佑[1]

第一作者：余养伦

通信作者：Yu, Y.-L.

机构：[1]中国林科院木材工业研究所

年份：2007

卷号：28

期号：1

起止页码：130-133

中文期刊名：材料热处理学报

外文期刊名：Transactions of Materials and Heat Treatment

收录：CSTPCD;;EI(收录号：20071610557282);Scopus(收录号：2-s2.0-34147220415);北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家林业局"948"项目(2000-04-13)

语种：中文

中文关键词：单板层积材;升温曲线;数学模型;拟合

外文关键词：laminated veneer lumber; hot-press temperature curve; mathematical model; fitting

分类号：TB322;TB24

摘要：基于单板层积材热压升温曲线特征与马尔萨斯(Malthus)模型特征的相似性,通过类比方法,建立温度与时间的数学模型,采用SPSS程序的非线性拟合方法,求得升温速率系数k值;通过试验验证了模型的准确性,对比了理论与试验的温度曲线,并对结果进行了分析与讨论。结果表明,单板层积材热压升温曲线试验与理论曲线的R2值在0.95以上,单板层积材热压升温模型具有较高的可信度。k值与单板胶层所在位置的层数x呈线性关系,线性方程为k=-0.0019x+0.0199,R2值为0.999;k值与板坯层数x呈线性关系,线性方程为k=-0.0022x+0.0358,R2值为0.941。
Hot-press temperature as function of time was derived by analogy from the similarity between hot-pressing temperature curve of laminated veneer lumber and Malthus model. The coefficient of temperature rise velocity （k-value） was obtained by a nonlinear curve-fitting method with SPSS program, and the accuracy and efficiency of this model was validated with practical examples. The results show that the correlation coefficient R2-value of experiments and fitting curve is above 0.95 and that hot-press temperature as function of time model has convincing credibility. K- value and the position of layer has a linear relation, with linear equation being k = - 0.0019x ＋ 0.0199 and correlation coefficient R2 being 0.999. K-value and the number of layers also exhibits a linear relation, with linear equation being k = - 0.0022x ＋ 0.0358 and correlation coefficient R2 being 0.999.