柔度法标定木材断裂韧性的研究

doi:10.11707/j.1001-7488.20010218

林业科学 ›› 2001, Vol. 37 ›› Issue (2): 112-116.doi: 10.11707/j.1001-7488.20010218

柔度法标定木材断裂韧性的研究

邵卓平任海青江泽慧

安徽农业大学,合肥230036；中国林业科学研究院木材工业研究所,北京100091

收稿日期:1999-09-07 修回日期:1900-01-01 出版日期:2001-03-25 发布日期:2001-03-25

STUDY ON THE COMPLIANCE METHOD FOR DETERMINE WOOD FRACTURE TOUGHNESS

Shao Zhuoping,Ren Haiqing,Jiang Zehui

Anhui Agricultural University Hefei230036;Research Institute of Wood Industry, CAF Beijing100091

Received:1999-09-07 Revised:1900-01-01 Online:2001-03-25 Published:2001-03-25

摘要/Abstract

摘要：

本文应用柔度法测定了杉木的断裂韧性。研究表明:(1)柔度法是一种有效可行的实验标定方法;选用指数函数C =αexp(_a/w)能够很好地表达柔度与裂纹长度间的关系。(2)本次实验测定的杉木断裂韧性K^TL_IC=4.825MPa·mm^1/2 。

关键词: 木材断裂力学, 断裂韧性, 实验标定, 柔度法

Abstract:

In this paper, the compliance method was applied to determine fracture toughness of C.lanceolata. The results showed that: 1.the compliance method is an available and feasible experimental plotting method, the relationship between compliance and crack length may be expressed by exponent function(C=α exp(β_a/w))very well; 2.in this testing, the fracture toughness K^TL_IC of C.lanceolata is equal to 4.825 Mpa·mm^1/2 .

Key words: Wood fracture mechanics, Fracture toughness, Testing plot, Compliance method

邵卓平任海青江泽慧. 柔度法标定木材断裂韧性的研究[J]. 林业科学, 2001, 37(2): 112-116.

Shao Zhuoping;Ren Haiqing;Jiang Zehui. STUDY ON THE COMPLIANCE METHOD FOR DETERMINE WOOD FRACTURE TOUGHNESS[J]. Scientia Silvae Sinicae, 2001, 37(2): 112-116.

[1]	邵卓平. 竹材的层间断裂性质[J]. 林业科学, 2008, 44(5): 122-127.
[2]	邵卓平任海青江泽慧. 木材横纹理断裂及强度准则[J]. 林业科学, 2003, 39(1): 119-125.
[3]	邵卓平江泽慧任海青. 线弹性断裂力学原理在木材中应用的特殊性与木材顺纹理断裂[J]. 林业科学, 2002, 38(6): 110-115.

柔度法标定木材断裂韧性的研究

STUDY ON THE COMPLIANCE METHOD FOR DETERMINE WOOD FRACTURE TOUGHNESS

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