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1)  notch opening displacement
缺口张开位移
1.
Aside from these, the variations of notch opening displacement and the stiffness degradation of specimens were monitored with cycle history.
本文探讨含表面缺口玻纤/环氧树脂正交层压板的疲劳力学特性,测量和分析了疲劳寿命特征及脱层扩展规律,监测了缺口张开位移、试样刚度降低随循环历史的变化特征,结果表明,疲劳脱层扩展速率与应变能释放率的关系服从Paris方程,监视缺口张开位移或刚度降低的变化可能是监视和预测含表面缺口复合材料构件疲劳破坏的有效手段之一。
2)  crack mouth opening displacement
裂缝口张开位移
1.
This paper presents a study of the resistance-CMOD(crack mouth opening displacement) relationship of CFRC(carbon fiber reinforced cement based material) beam with different carbon fiber fractions under three-point flexure loading.
研究了不同碳纤维掺量的CFRC(碳纤维水泥基材料)梁在三点弯曲荷载作用下其电阻变化与CMOD(裂缝口张开位移)的关系。
2.
In the present study,the tensile stress-crack opening relationship of steel fiber reinfnrced mortar (SFRM) is determined by inverse analysis using load versus crack mouth opening displacement(CMOD) curve from notched beam tests.
利用三点弯曲缺口梁的荷载与裂缝口张开位移(CMOD)曲线用反分析法确定了钢纤维水泥砂浆的拉应力与裂缝张开位移关系,同时数值模拟了三点弯曲缺口梁的荷载与挠度曲线。
3)  CMOD
裂缝口张开位移
1.
Using three-point-bending beam measured Pmax corresponding to CMODC parameters in concrete and different fiber content concrete,double-K fracture parameter can be determined.
采用三点弯曲梁试件,通过测得素混凝土、不同纤维掺量的钢纤维混凝土的最大荷载Pmax及对应的裂缝口张开位移CMODC等参数,计算钢纤维混凝土的双K断裂参数,结果表明,用双K断裂准则计算钢纤维混凝土能更好的解释钢纤维的增韧作用。
4)  opening displacement
张开位移
1.
The boundary integral method is applied to the analysis of opening displacement and stress intensity factor of surface crack.
用边界积分方法,分析表面裂纹的张开位移和应力强度因子。
2.
Under the ratios of various initial cracking relative length,height and volume of gas concrete beam,the whole curve of opening displacements at several testing points about fracture toughness,fracture energy,and in the area of load,cracking-tip-opening-displacement,cracking tip opening displacement cracking-tip-area are researched systematically.
在本研究中对加气混凝土梁在不同初始裂纹相对长度、不同高度以及不同体积比例等情况下的断裂韧性、断裂能以及载荷—裂纹口张开位移—裂纹尖端张开位移—裂纹尖端前沿区若干测点张开位移全曲线进行了系统研究。
3.
The fracture energy,the crack mouth opening displacement and the crack tip opening displacement of the specimens were also measured.
为了研究聚丙烯纤维对水泥稳定碎石断裂韧性的影响,通过聚丙烯纤维水泥稳定碎石和普通水泥稳定碎石的三点弯曲试件断裂试验,测得了试件的断裂能、裂缝嘴张开位移和裂缝尖端张开位移,给出了聚丙烯纤维体积掺量的合理范围——0。
5)  crack tip opening displacement
张开位移
1.
Engineering solution of crack tip opening displacement for surface plate subjected to uniformly distributed forces with center through crack is derived.
首先对EPRI方法建立的裂纹中心板张开位移的工程解进行了实例计算,然后用有限元法对平板中心穿透裂纹张开位移计算得到的有限元解与其进行了比较,得出工程解偏于保守的结
6)  crack opening displacement
张开位移
1.
The SPI technique was used to measure in situ the crack tip strain and crack opening displacement(COD) at various loading stages in one loading cycle during constant amplitude fatigue crack propagation.
应用散斑干涉技术,在常幅载荷下对疲劳裂纹扩展过程中的一个循环周期内,不同加载阶段的裂尖应变、裂纹张开位移进行了原位测量,给出了裂纹闭合对裂纹张开位移及裂尖形变的影响规律。
2.
The relationship between fictitious crack length and stress intensity factor or crack opening displacement is also given.
基于虚裂纹模型的概念 ,导出了无限大板中心直裂纹在远场均匀拉应力作用下双参数模型的应力函数和位移函数 ,其解由线弹性断裂力学解、Dudale的解答和加权积分法导出的虚裂纹模型解所构成 ,最后给出了虚裂纹长度与应力强度因子及张开位移的关
3.
In this paper, a method is proposed to estimate the plastic zone size, by extending the Dugdale model to three dimensional (3D) crack problems and the crack opening displacement (COD) at the tip of a sptatial penny shaped crack by combining the Barenblatt Dugdale model with the principle of 3D J integral, then the relationship between J integral and COD is obtained.
将Dugdale模型推广到三维裂纹问题计算了圆盘状裂纹前缘塑性区尺寸,并结合断裂力学中的Barenblat-Dugdale裂纹模型和三维J-积分原理计算了圆盘状裂纹前缘张开位移,得到了J-积分与裂纹张开位移的关系。
补充资料:裂纹尖端张开位移
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性质:在外载荷的作用下,裂纹尖端两表面间的张开位移。用符号δ表示。由于在弹塑性条件下,已得到δ与工作应力σ(或应变ε)以及裂纹尺寸a(裂纹的半长)之间的关系,因此它是弹塑性断裂力学中的一个重要参量。 

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