|本期目录/Table of Contents|

[1]杨蕾,周爱萍,黄东升,等.基于VIC-3D技术的重组竹I型断裂参数确定方法[J].南京工业大学学报(自然科学版),2016,38(05):100-104.[doi:10.3969/j.issn.1671-7627.2016.05.016]
 YANG Lei,ZHOU Aiping,HUANG Dongsheng,et al.Determination of mode-I fracture parameters of parallel strand bamboo based on VIC-3D technology[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(05):100-104.[doi:10.3969/j.issn.1671-7627.2016.05.016]
点击复制

基于VIC-3D技术的重组竹I型断裂参数确定方法()
分享到:

《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
38
期数:
2016年05期
页码:
100-104
栏目:
出版日期:
2016-09-28

文章信息/Info

Title:
Determination of mode-I fracture parameters of parallel strand bamboo based on VIC-3D technology
文章编号:
1671-7627(2016)05-0100-05
作者:
杨蕾12周爱萍12黄东升12何晨12
1.南京林业大学 土木工程学院,江苏 南京 210037; 2. 江苏省林业资源高效利用协同创新中心,江苏 南京 210037
Author(s):
YANG Lei12ZHOU Aiping12HUANG Dongsheng12HE Chen12
1.College of Civil Engineering,Nanjing Forestry University,Nanjing 210037,China; 2.Jiangsu Co-Innovative Center for Efficient Application of Forestry Resources,Nanjing 210037,China
关键词:
重组竹 I型断裂 VIC-3D技术 R曲线
Keywords:
parallel strand bamboo mode I fracture VIC-3D technology R-curve
分类号:
TU366.1
DOI:
10.3969/j.issn.1671-7627.2016.05.016
文献标志码:
A
摘要:
重组竹是原竹经工业化制造而成的一种高强复合材料,近年来被用于建筑结构。由于重组竹内部存在许多微裂纹,断裂破坏是重组竹构件的主要失效模式。本文基于线弹性断裂理论和Irwin能量原理,采用VIC-3D全场变形测量技术确定裂纹扩展长度,通过重组竹楔形试件断裂试验,研究重组竹I型裂纹的断裂性能,给出重组竹的断裂韧度和R曲线。试验表明:VIC-3D全场变形测量技术可准确确定裂纹尖端,避免了等效柔度法的复杂运算。该方法的结构与等效柔度法高度一致,是研究重组竹断裂性能的一种有效测量手段。
Abstract:
Fabricated via industrial process using raw bamboo,Parallel strand bamboo(PSB)is a high strength composite which has been used in building constructions in recent years. Microvoids are inevitably left in PSB composite owing to the dimensional inconsistence of bamboo fibers; hence fracture due to mocrovids coalescence and expanding maybe a major failure mode of PSB components. This paper amid at studying on the Mode I fracture properties based on LEFM theory and Iwrin’s energy theory. Wedge splitting test was employed as test method. The length of crack expending was determined by three dimensional virtual image correlation(VIC-3D)global-field deformation acquisition system. Fracture toughness of PSB and R-curves were obtained. The results showed that the VIC-3D global-field acquisition system can precisely determine the crack tip and the complicated calculation for crack length determination may be avoided. Good agreement may be achieved between the result of this method and compliance approach,which indicated that the proposed method in this study is efficient.

参考文献/References:

[1] HUANG D,ZHOU A,BIAN Y.Experimental and analytical study on the nonlinear bending of parallel strand bamboo beams[J].Construction & building materials,2013,44(8):585.
[2] 邵卓平.木材损伤断裂与木材细观损伤基本构元[J].林业科学,2007,43(4):107.
[3] American Society for Testing and Materials.Standard test method for translaminar fracture toughness of laminated and pultruded polymer matrix composite materials[S].[S.l.]:ASTM,2004.
[4] American Society for Testing and Materials.Standard test method for measurement of fracture toughness[S].[S.l.]:ASTM,2014.
[5] 中华人民共和国国家质量监督检验检疫总局.金属材料平面应变断裂韧度KIC试验方法:GB 4161—2007[S].北京:中国标准出版社,2007.
[6] STANZL-TSCHEGG S E,TAN D M,TSCHEGG E K.New splitting method for wood fracture characterization[J].Wood science & technology,1995,29(1):31.
[7] IRWIN G R.Onset of fast crack propagation in high strength steel and aluminum alloys[J].Aluminum alloys,1956,2:289.
[8] 孙一翎,李善祥.数字散斑相关测量方法的研究与改进[J].光子学报,2001,30(1):54.
[9] GRIFFITH A A.Phenomena of rupture and flow in solids[J].Fisheries management & ecology,1920,16(2):130.

相似文献/References:

[1]周爱萍,黄东升,唐思远,等.重组竹-钢填板螺栓节点承载力试验研究[J].南京工业大学学报(自然科学版),2016,38(05):34.[doi:10.3969/j.issn.1671-7627.2016.05.006]
 ZHOU Aiping,HUANG Dongsheng,TANG Siyuan,et al.Experimental research on bearing capacity of the bolted PSB-steel-PSB joints[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(05):34.[doi:10.3969/j.issn.1671-7627.2016.05.006]

备注/Memo

备注/Memo:
收稿日期:2016-06-21
基金项目:国家自然科学基金(51578291); 林业科学技术成果国家级推广项目; 江苏省高校优势学科建设工程
作者简介:杨蕾(1994—),女,江苏盐城人,硕士,主要研究方向为现代竹/木结构; 周爱萍(联系人),副教授,E-mail:zaping2007@163.com.
引用本文:杨蕾,周爱萍,黄东升,等.基于VIC-3D技术的重组竹I型断裂参数确定方法[J].南京工业大学学报(自然科学版),2016,38(5):100-104..
更新日期/Last Update: 2016-09-20