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1)  stress damage failure
应力损伤失效
1.
The natUreof stress damage failure of beams is discussed in details.
本文提出了梁的弯曲应力损伤失效分析方法,推导了梁弯曲应力损伤基本方程,与Kachanov的材料受载横截面减少定义拉伸损伤变量类似,以梁的弯曲惯性矩减少定义弯曲损伤变量。
2)  stra in damage failure
应变损伤失效
3)  damage failure
损伤失效
1.
A damage failure method was developed to predict the static strength and failure modes of composite bolted joints along with three-dimensional finite element technique.
结合三维有限元分析技术,建立了有拧紧力矩工况下层合板接头静载损伤失效分析方法,模拟了不同尺寸类型层合板接头静载作用过程中损伤状况及内部各铺层损伤起始、发展与结构最终破坏整个累积过程,同时获得其最终破坏强度及破坏模式,并对损伤机理形式及其相互关联作用进行了分析探讨。
4)  Damage equivalent stress
损伤等效应力
1.
Damage equivalent stresses in the matrix and particle were calculated on basis of damage theory.
用细观力学的方法研究颗粒增强脆性基体复合材料的强度和损伤失效,认为复合材料由随机二相胞元和基体构成,分析基体、颗粒中的局部应力场,根据损伤理论分别得到基体和颗粒的损伤等效应力。
5)  damaging effect
损伤效应
1.
Evaluation of the damaging effect of NaCl on Phanerochaete chrysosporium with amplified fragment length polymorphism(AFLP ) analysis;
NaCl对黄孢原毛平革菌(Phanerochaete chrysosporium)的损伤效应
2.
The AFLP analysis was carried out in order to evaluate the DNA damaging effects of dyestuff of different concentrations on Phanerochaete chrysosporium.
chrysosporium)菌株DNA的损伤效应。
3.
The damaging effects of reactive brilliant red X-3B RBR X-3B and salt concentration on the cells of Phanerochaete chrysosporium were studied by transmission electron microscope.
染料和盐双因子对黄孢原毛平革菌细胞的损伤效应表现为其损伤程度与单因子作用一致,且染料的影响作用占主导。
6)  damage effect
损伤效应
1.
Based on Hamilton s principle,the higher-order shear deformation plate theory,von Krmn type geometrically nonlinear strain-displacement relations and the strain energy equivalence theory,considering the mass and stiffness of the piezoelectric layers and the damage effect of the composite layers,the nonlinear dynamic equations of the piezoelectric smart laminated plates with damage are derived.
基于Hamilton原理、高阶剪切变形板理论、von Kármán型几何非线性应变-位移关系以及应变能等效原理,考虑压电层的质量和刚度及复合材料层内的损伤效应,建立了具损伤压电智能层合板的非线性运动方程。
2.
The resuilts indicated that EMS could induce chromosomal aberration of root tip cell and different damage effect of seedling ratio,seedling height,root length,root number and peroxidase activity.
本试验以EMS为诱变剂处理薏苡种子,结果表明,EMS能引起薏苡根尖细胞染色体畸变,同时对出苗率、苗高、根尖、根数和过氧化物酶活性都有不同程度的损伤效应。
3.
Based on the equivalent strain theory,the high-order shear deformation theory and the Hamilton variation principle,considering the damage effect of the composite laminated layers,the dynamic equations of the piezoelastic laminated plates with damage are derived.
基于应变能等效原理、高阶剪切变形理论和Hamilton变分原理,考虑复合材料铺设层内的损伤效应,建立了具损伤压电智能层合板的运动控制方程,并运用Galerkin方法进行求解。
补充资料:失效应力
分子式:
CAS号:

性质:工程构件在实际工作时往往处在复杂受力状态下。它的破断发生的机理十分复杂。为了描述当时的极限受力状态或极限的应变状态,经实际工程设计提供根据,就有人根据对实际情况的调查和试验研究,提出了各种各样的强度理论(或称失效判据)来加以描述。比较通行的有最大正应力理论、最大应变失效判据、蔡-希尔准则和蔡-吴判据等。在这些判据里规定的表征达到失效时的应力,就称失效应力。如果用最大正应力理论,那么该材料的失效应力应是小于单向拉伸试验中测得的屈服应力σy的某一数。

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