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三点弯曲试样J积分和应变能间关系式的实验研究
吴希俊; 姜健; 尹花子
1978-05-01
Source Publication金属学报
Issue4Pages:420-429
Abstract本文用长短两种跨度的三点弯曲试样测试J_(Ic)值,用以检验J积分和应变能间的关系式。实验结果表明,用J=2/B(W-a)(U-U_0+M~2φ/BE'W~2)计算的J_(Ic)值,对于短跨度(S/W=4)试样,裂纹深度在0.22≤a/W≤0.71范围内,测得的J_(Ic)值具有稳定性(J_(Ic)=12.0±0.5公斤/毫米);对于长跨度(S/W=8)试样,裂纹深度在0.28≤a/W≤0.53范围内,测得的J_(Ic)值也具有稳定性(J_(Ic)=11.7±0.8公斤/毫米)。说明用不同跨度和不同裂纹深度的试样所测得的J_(Ic)值相同。但是用J=2U/B(W-a)计算的J_(Ic)值,对于短跨度浅裂纹及长跨度试样,其数值与裂纹深度有关。实验表明,前一个公式是J积分和应变能间较普遍的关系式。此外,本文对试验机系统的非线性接触位移对J_(Ic)值测量的影响进行了讨论。
description.department中国科学院金属研究所,中国科学院金属研究所,中国科学院金属研究所,
Keyword三点弯曲试样:5091 裂纹深度:4171 塑性应变能:3307 实验研究:2897 积分和:2734 浅裂纹试样:2724 关系式:2646 非线性接触:2467 试验机:2269 稳定性:2045
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/30076
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
吴希俊,姜健,尹花子. 三点弯曲试样J积分和应变能间关系式的实验研究[J]. 金属学报,1978(4):420-429.
APA 吴希俊,姜健,&尹花子.(1978).三点弯曲试样J积分和应变能间关系式的实验研究.金属学报(4),420-429.
MLA 吴希俊,et al."三点弯曲试样J积分和应变能间关系式的实验研究".金属学报 .4(1978):420-429.
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