邓恩桉木材蠕变特性研究

doi:10.14088/j.cnki.issn0439-8114.2021.07.013

湖北农业科学 ›› 2021, Vol. 60 ›› Issue (7): 80-83.doi: 10.14088/j.cnki.issn0439-8114.2021.07.013

邓恩桉木材蠕变特性研究

罗义汉¹, 张荣波¹, 梁建新¹, 卢翠香², 刁海林³

1.广西国有大桂山林场, 广西贺州 542899;
2.广西林业科学研究院,南宁 530002;
3.广西大学林学院,南宁 530004

收稿日期:2020-06-03 出版日期:2021-04-10 发布日期:2021-04-25
通讯作者: 刁海林（1958-）,男,河南郸城人,副教授,从事木材材性与加工利用研究,（电话）13481077281（电子信箱）diaohailin@sina.com。
作者简介:罗义汉（1971-）,男,广西贺州人,工程师,从事木材材性与加工利用研究,（电话）18707845537（电子信箱）dgslc5226333@21cn.com。
基金资助:
广西林业科技项目（桂林科字[2013]1号）; 广西优良用材林资源培育重点实验室自主课题（12B0101）

Study on creeping properties of Eucalyptus dunnii

LUO Yi-han¹, ZHANG Rong-bo¹, LIANG Jian-xin¹, LU Cui-xiang², DIAO Hai-lin³

1. Guangxi State-Owned Daguishan Forest Farm, Hezhou 542899, Guangxi, China;
2. Guangxi Academy of Forestry, Nanning 530002, China;
3. Forestry College, Guangxi University, Nanning 530004, China

Received:2020-06-03 Online:2021-04-10 Published:2021-04-25

摘要/Abstract

摘要： 采用电测法对邓恩桉（Eucalyptus dunnii）木材进行弯曲蠕变特性试验研究,结果表明,随着应力水平的增大,邓恩桉木材的抗瞬间弹性蠕变能力和抗长期粘性蠕变能力减弱;在40%σ_b应力水平下的抗延迟弹性蠕变能力最强;在相同应力水平下,邓恩桉木材径向试件的抗蠕变能力比弦向试件强。初步评定邓恩桉木材具有良好的抗蠕变性能,可用于制造木结构构件。

关键词: 邓恩桉（Eucalyptus dunnii）, 木材, 蠕变特性

Abstract: The experiment was carried out to test the bending creep characteristic of Eucalyptus dunnii by electrical measuring method and tried to give an evaluation method. The experiment results showed that, both the ability to withstand instantaneous elastic deformation and sustained viscosity deformation decreased with increasing stress; The ability to withstand delayed elastic deformation was strongest when the bending stress was 40%σ_b; The ability to withstand creep deformation in radial was stronger than in tangential for E. dunnii under the same stress. E. dunnii had a good ability to withstand creep through the preliminary assessment.

Key words: Eucalyptus dunnii, wood, creeping property

中图分类号:

罗义汉, 张荣波, 梁建新, 卢翠香, 刁海林. 邓恩桉木材蠕变特性研究[J]. 湖北农业科学, 2021, 60(7): 80-83.

LUO Yi-han, ZHANG Rong-bo, LIANG Jian-xin, LU Cui-xiang, DIAO Hai-lin. Study on creeping properties of Eucalyptus dunnii[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(7): 80-83.

参考文献 13

[1]	郭祥泉, 郭祥堆. 邓恩桉在闽北生长规律与适应性探讨[J].西北林学院学报,2010, 25(2):50-55.
[2]	GB/T1927—2009,木材物理力学试材采集方法[S].
[3]	刁海林, 罗建举, 蔡道雄. 红锥木材蠕变特性研究[J].西北林学院学报,2013, 28(2):173-177.
[4]	刁海林. 木材蠕变特性研究的方法与技术[J].林业实用技术, 2012(10):59-61.
[5]	吴其晔,巫静安.高分子材料流变学[M]. 北京:高等教育出版社, 2002.
[6]	徐有明. 木材学[M].北京:中国林业出版社, 2006.
[7]	王逢瑚. 木质材料流变学[M]. 哈尔滨:东北林业大学出版社, 2005.
[8]	HASSANI M M, WITTEL F K, HERING S, et al.Rheological model for wood[J]. Computer methods in applied mechanics and engineering, 2015, 283:1032-1060.
[9]	WANG J B, FOSCHI R O, LAM F.Duration-of-load and creep effects in strand-based wood composite:A creep-rupture model[J]. Wood science and technology, 2012, 46(1-3):375-391.
[10]	天津大学材料力学教研室电测组. 电阻应变片测试仪技术[M]. 北京:科学出版社,1980.
[11]	刁海林, 梁炳钊, 徐峰,等. 马尾松、尾赤桉木材蠕变特性常数研究[J]. 广西科学, 2003, 10(2): 150-153.
[12]	GOTTRON J, HARRIES K A, XU Q F.Creep behaviour of bamboo[J]. Construction and building materials, 2014, 66:79-88.
[13]	HONFI D, MÅRTENSSON A, THELANDERSSON S, et al. Modelling of bending creep of low-and high-temperature-dried spruce timber[J]. Wood science and technology, 2014, 48(1):23-36.

邓恩桉木材蠕变特性研究

Study on creeping properties of Eucalyptus dunnii

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献 13

相关文章 1

编辑推荐

Metrics

本文评价