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
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。
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。
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。
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。
The specimens of 6063 aluminum alloy are tensioned under different stress triaxiality and different strain rates,the mechanical properties of 6063 aluminum alloy can be drawn.
对6063铝合金试样在不同应力三轴度和不同应变率下进行拉伸试验,得到了该合金在这两种情况下的力学性能。
Tensile,compression,torsion,and fine blanking tests of 45 steel were performed, and the stress triaxiality and ductile damage of each test are analyzed with FEM.
以45中碳钢为研究对象,进行了拉伸、压缩、扭转、精冲实验,并结合有限元对各实验过程中的应力三轴度和延性损伤进行了分析,归纳了金属材料的3种延性损伤机理:无空穴影响剪切损伤、剪切型空穴损伤和拉伸型空穴损伤。
A study is made to determine how the stress triaxiality, temperature and strain rate could influence the fracture strain of SiC particulate reinforced metal matrix composites (PRMMCs).
研究了应力三轴度、温度、应变速率对颗粒增强金属基复合材料 (PRMMCs)断裂应变的影响。
The stress triaxiality was defined in terms of stress invariants.
提出了一种新的损伤塑性本构模型,定义了一个用应力不变量表示的应力三轴比,强调了应力三轴比对塑性屈服的影响。
A plastic constitutive damage model was proposed with special concerns being put on simulating the stress triaxiality-dependent hardening phenomena.
提出了一种新的损伤塑性本构模型,强调了应力三轴比对塑性屈服的影响。
Crack tip stress triaxiality in welded joints;
焊接接头中的裂端应力三轴性
In this paper, a two dimensional finite element method is employed to investigate the effect of heterogeneous factors in welded joints on the constraint intensity——stress triaxiality near the crack tip under the plane strain condition.
采用有限元方法研究了平面应变条件下焊接接头中不均匀性因素对裂端拘束强度——应力三轴性的影响。
Triaxial computational method for structure time dependent behavior;
三轴应力状态下结构时间效应的计算
Research on unsaturated loess experiment under triaxial stress
三轴应力状态下非饱和黄土试验研究
Study on red sandstone mechanical property under different stress path by triaxial test
不同三轴应力途径下红砂岩力学特性试验研究
It is frequently accelerated by the presence of an active environment and by triaxial stress.
激化环境和存在三轴应力，常可加速这种破坏。
Experimental study of structure steel in stress triaxiality on fracture properties
结构钢在三轴应力空间的断裂试验分析
Design and implementation of the software for the triaxial stress check of casing string
套管柱三轴应力校核软件的设计与实现
Test of the Dynamic Triaxial Stress-strain Hysteresis Curve of the Sand Soil and Study of its Characteristics of Dynamics
砂土动三轴应力应变滞回曲线试验及其动力特性研究
Experiment on Triaxial Pore Water Pressure-stress-strain Characteristics of Foamed Particle Light Weight Soil
发泡颗粒混合轻量土三轴应力-应变-孔压特性试验
Effect of Triaxial Stress on the Plastic Zone Distribution in Front of Crack Tip with Mixed Mode Loading
三轴应力状态下复合型裂纹尖端前缘的塑性区分布
Experimental Study of Water-sandstone Reaction under Triaxial Stress
三轴压力下水与砂岩反应的实验研究
Plane Strain Experiment Research of Simulating Stress Path of Excavation Pit by the True Triaxial Cell;
模拟基坑应力路径的真三轴平面应变试验研究
Experimental Investigation on Triaxial Frost Heaving Stress-Strain Relationship of Saturated Clay
饱和粘土三轴冻胀应力-应变关系试验研究
DEVELOPMENT AND APPLICATION OF TWIN-PISTON MULTIPURPOSE TRIAXIAL PRESSURE CHAMBERS
双活塞多功能三轴压力室的研制及其应用
The Behaviour Research of Triaxial Compression Test Under the Different Stress-Path in Dagan Ping Soft Clay
大甘坪软粘土不同应力路径的三轴试验特性
True Triaxial Test of Medium Stress Influence on Duncan-Zhang Model
中主应力对邓肯-张模型影响的真三轴试验研究
Experimental Study of Water-Sandstone/Limestone Reaction under Triaxial Stress;
三轴压力下水与砂岩、灰岩反应的实验研究
A plastic constitutive model for concrete with zero value of initial yield stress under triaxial compressive loading condition
零屈服应力下混凝土三轴受压塑性模型
Analysis of the direction of shear fracture trend surface in triaxial unequal stress fields
三轴不等应力场下剪切破裂趋势面方向探析
