林业科学 ›› 2021, Vol. 57 ›› Issue (9): 160-167.doi: 10.11707/j.1001-7488.20210916
付宗营1,蔡英春2,周永东1,*
收稿日期:
2020-04-03
出版日期:
2021-09-25
发布日期:
2021-11-29
通讯作者:
周永东
基金资助:
Zongying Fu1,Yingchun Cai2,Yongdong Zhou1,*
Received:
2020-04-03
Online:
2021-09-25
Published:
2021-11-29
Contact:
Yongdong Zhou
摘要:
木材干燥应力相关研究是木材科学的重要组成部分,对木材实际加工过程具有重要指导作用,也是制定和优化干燥工艺的依据。本文从木材干燥应力研究的主要试验手段和模型方法2方面入手,对比分析各种方法的优势和不足,系统总结干燥应力研究现状,以期为木材干燥应力相关研究提供借鉴,推动干燥应力研究向更深层次发展,为木材高质量干燥奠定基础。试验研究方面,传统的叉齿法和切片法依旧是木材干燥应力、应变检测的常规试验方法,数字图像、近红外光谱等现代化技术手段为干燥应力、应变研究提供了新的契机,但至今仍没有一种方法具备绝对的检测精度和实际推广应用条件。模型研究方面,木材流变学理论模型日趋完善成熟,对干燥应力的模拟进入一个瓶颈阶段。随着计算机技术的不断发展以及数值分析软件的逐渐强大,有限元法被用于木材干燥应力的模拟研究,该方法在处理木材这种各向异性材料方面具有一定优势,目前处于快速发展阶段。根据现阶段木材干燥应力研究现状,试验手段和模型方法对于干燥应力研究均具有不可替代的作用,二者结合是全面研究干燥应力的关键,试验探寻能够快速、精准、连续检测木材干燥应力的新装置或新技术依然是未来的研究重点。有限元法是木材干燥应力模型研究最具潜力的数值分析方法,未来适用性广泛的模型构建要立足于木材自身的多尺度、多层级结构特征,利用先进仪器设备获取精准的模型参数,并将所建模型纳入干燥设备控制系统,指导和服务于实际生产。
中图分类号:
付宗营,蔡英春,周永东. 木材干燥应力研究现状与趋势[J]. 林业科学, 2021, 57(9): 160-167.
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