1) stress triaxiality space
应力三轴空间
1.
Against an-engineering and background combinied with the mechanical theory of yield and fracture of ductile material in classical mechanics and fracture mechanics,this article deduced the microcosmic crack formation criteria(σ_F=σ_Y1-υ) of ductile material in stress triaxiality space by studying fracture stress field in root of notched bar made by the ductile material.
从特定的工程背景出发,结合经典力学和断裂力学对延性材料屈服和断裂解释的力学原理,通过对延性材料刻痕杆刻痕根部的断裂应力场分析,推导出了延性材料在应力三轴空间中微观裂纹的形成准则:σF=σY1-υ。
2.
By study and equivalent simplification of fracture stress field in notched root,lower and upper limits of aluminum alloy brittle fracture strength in stress triaxiality space were deduced as follows respectively:σLF=σY/(1-μ)and σUF=2σY.
通过对铝合金深槽刻痕杆刻痕根部亚表层断裂应力场的数值分析和等效简化,导出了常温下铝合金在应力三轴空间宏观脆断强度的上、下限建议值分别为:σUF=2σY和σLF=σY/(1-μ)。
3.
Combining with the mechanics theory of yield and fracture of metal in classical mechanics and fracture mechanics,crack formation criteria of ductile metal in stress triaxiality space is deduced by studying fracture stress field in root of notched bar made by ductile metal.
结合经典力学和断裂力学对金属屈服和断裂解释的力学原理,通过对延性金属刻痕杆刻痕根部断裂应力场分析,推导了延性金属在应力三轴空间的微观裂纹形成准则。
2) three-dimensional stress space
三轴应力空间
1.
Based on the assumption of yield and fracture simultaneity of aluminum alloy in tri-axial mean pull stress field,the ellipsoidal surface fracture criterion and the corresponding pa- rameter were deduced for aluminum alloy in three-dimensional stress space, then the fracture de- sign frame of aluminum alloy.
基于三向等拉伸应力状态下铝合金屈服和断裂的重合性假设,导出了铝合金在三轴应力空间的椭球面断裂准则及参数量化方法,并给出了铝合金抗断设防图及广义屈服椭球面的物理解释。
3) triaxial stress
三轴应力
1.
Experimental study of acoustic emission characteristics of granite thermal cracking under middle-high temperature and triaxial stress
中高温三轴应力下鲁灰花岗岩热破裂声发射特征的试验研究
2.
Based on elasticity theory, the triaxial stress formulas of casing exposed to thermal steam under thermal stress and non-uniform in-situ stress were derived.
以暴露于热蒸汽中的目的层套管为研究对象,根据弹性力学理论,首先给出了套管在热应力和非均匀地应力作用下的三轴应力表达式,然后利用对套管施加预应力来降低套管的轴向热应力,以使得套管的有效应力控制在相应温度下套管的最小屈服极限内为原则,得到了热采井套管三轴预应力设计方法,并对辽河油田常用的N80钢级套管进行了预应力设计分析,给出了该套管在不同注汽温度和井深条件下所应使用的径厚比及相应的预应力值。
3.
Based on the elastic theory,this paper derived the triaxial stress formulas of casing exposed to heating steam under thermal stress and non-uniform geologic stress,and established a new method to design the prestress of casing.
以暴露于热蒸汽中的目的层套管为研究对象,根据弹性力学理论,首先给出了套管在热应力和非均匀地应力作用下的三轴应力表达式,然后利用对套管施加预应力来降低套管的轴向热应力,使得套管的有效应力控制在相应温度下套管的最小屈服极限内为原则,得到了热采井套管三轴预应力设计方法,并对辽河油田常用的N80钢级套管进行了预应力设计分析,给出了该套管在不同注汽温度和井深条件下所应使用的径厚比及相应的预应力值。
4) triaxial stress state
三轴应力
1.
In order to study the damage mechanism under different stress states of aluminum alloy component, two kinds of representative triaxial stress states have been adopted, namely notch tensile and pure shear.
为了研究铝合金构件在不同应力状态下损伤机理,采取了两种代表性的三轴应力状态,即缺口拉伸与纯剪切所产生的应力状态。
5) triaxial stresses
三轴应力
1.
Utilizing the 20 MN servo-controlled triaxial rock testing machine with high temperature and pressure developed by the authors,the research of thermal deformation and failure characteristics of large size granite samples of φ 200 mm×400 mm at high temperature and triaxial stresses through recent half a year is carried out;and the characte.
5 a,系统深入地研究φ200 mm×400 mm的大尺寸花岗岩试样在高温三轴应力下的热变形和破坏特征及其热学和力学参数随温度的变化特征。
6) triaxial stress equipment
空芯包体式三轴应力计
补充资料：单轴应力
分子式：
CAS号：
性质： 仅沿某一个轴向作用于材料上而且只有一个分量的应力。即σ1≠0，σ2=σ3=0。这种情况通常在简单拉伸无裂纹的均质材料时出现。如所加应力是张应力，则在受力方向上材料要伸长，垂直于应力方向上材料要减小尺寸。
CAS号：
性质： 仅沿某一个轴向作用于材料上而且只有一个分量的应力。即σ1≠0，σ2=σ3=0。这种情况通常在简单拉伸无裂纹的均质材料时出现。如所加应力是张应力，则在受力方向上材料要伸长，垂直于应力方向上材料要减小尺寸。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条