1) acoustoelasticity theory
声弹理论
1.
A new method for measuring in-situ stresses with ultrasound is developed based on acoustoelasticity theory.
首先描述岩石的声弹理论,给出岩石的应力与弹性波波速之间的理论关系;其次利用岩石应力与弹性波波速之间的理论关系提出地应力超声测量方法,即通过测量套孔应力解除前后的孔壁超声波波速的变化,利用声弹理论反演出地应力。
2) Acoustoelastic theory
声弹性理论
1.
Based on the acoustoelastic theory,this method can measure the stress from the surface of accessory using critically refracted longitudinal(LCR) wave.
该文提出了一种基于声弹性理论,利用临界折射纵波(LCR)从表面测量零件内部切向应力的实验方案,并依据固体中超声波传播特性与零件内部应力状态的关系,搭建了基于传播声时的切向应力测量系统。
3) elastic theory
弹性理论
1.
Analytical solution for the load-displacement relationship of pullout DX pile based on elastic theory;
DX桩抗拔位移的弹性理论解析解
2.
Analytic solution to elastic theory on surrounding rocks in tunnels with different compressive and tensile moduli;
隧洞围岩拉压不同模量弹性理论的解析解
3.
The analysis of partial short supporting effect is studied on the basis of elastic and viscoelastic theory.
以弹性及粘弹性理论为基础,结合实例计算,分析了高应力巷道局部弱支护机理,阐述了底鼓与顶、帮失稳相互诱发的原因,为巷道支护结构设计提供新的理论依据。
4) elasticity
[英][,i:læ'stɪsəti] [美]['ilæ'stɪsətɪ]
弹性理论
1.
Weak solution(or generalized solution)for the boundary-value problems of partial differential equations of elasticity of 3D(three-dimensional) quasicrystals was given,in which the matrix expression was used.
通过给出准晶弹性偏微分方程组边值问题的矩阵表示去定义弱解,利用Korn不等式和函数空间理论证明了这种弱解的存在性与唯一性,从而把经典弹性理论边值问题解的存在性定理推广到准晶弹性理论上,这种理论为发展极其复杂与困难的准晶弹性的偏微分方程的边值问题的数值解提供了一个基础。
2.
The stress data is obtained from elasticity.
应力数据由弹性理论求出,得到在一定范围内表示孔边应力集中系数的近似表达式。
3.
In this paper, the distribution of shear stress along the anchoring section of pressure-dispersion anchor is analyzed by the elasticity theory.
运用弹性理论分析方法,求解出压力分散型锚索锚固段剪应力沿轴向分布情况,并与压力型锚索对比,得出压力分散型锚索应力分布特点。
5) theory of elasticity
弹性理论
1.
Applied calculation methods of piled foundation stiffness are proposed based on theory of elasticity and Vs trimming for vibration calculation.
本文介绍了振动计算中桩基刚度的弹性理论和Vs修正的实用计算方法。
2.
Based on theory of elasticity,a new method of evaluating self-equilibrating thermal stresses in concrete bridges was proposed.
为了更准确地计算混凝土桥梁结构的温度应力,提出了一种基于弹性理论求解温度自应力的新方法。
3.
To get a reality-based interpretation of the deformable model and its parameters, an approach originates from the theory of elasticity is proposed.
从弹性理论出发 ,揭示了可变形模型的物理本质 ,并对可变形模型的参数赋予了现实的物理意义。
6) Spring back theory
回弹理论
1.
A Study on the Spring Back Theory of Plastic Bending;
塑性弯曲回弹理论的探讨
补充资料：弹塑性岩体内竖井地压理论
弹塑性岩体内竖井地压理论
ground pressure around shaft in elastic-plastic rock
tonsux一ng yant一ne一shuJ一ngd一yol一}un弹塑性岩体内竖井地压理论(ground pres-sure around shaft in elastie一plastie roek)在表土或软岩中掘进竖井时，若岩体只产生弹性变形，岩体是稳定的，不必计算地压。只有在产生塑性及流变变形时，才需要计算地压;竖井各水平截面上地压不等。按轴对称条件求出竖井周边位移，再求出支护位移公式，将它们联立求解，即可得到竖井地压。也可用图解法找到两条位移与应力关系曲线的交点，该点的纵坐标值即为竖井地压(见图)竖井围岩周边位移公式为: “止 U 竖井变形地压计算图 1围岩位移曲线;z支护特性曲线 a(p。s、n，，+。eos叭)厂(尸。+。.eot，t川一sin，.门导 ZG，匕P。+cicot笋，J式中“。为竖井围岩周边位移，m;a为竖井掘进半径，m;P0为原岩水平应力，重力场条件下，P0一六yI1，MPa;c，为第i层岩石粘结力，MPa;尸b为支护抗力，等于围岩作用在支护结构上的径向压力，但作用方向相反，MPa;笋，为第i层岩石内摩擦角;G.为第!层岩石剪切弹性模量;MPa。 竖井筒形支护特性方程为: l一群2厂bZ+a，尸1。， z，‘一二六舟}头‘-共一一IP，b EL右2一aZx一尸J“”式中u。为支护外半径表面的径向位移，支护与围岩密贴的情况下，“，一“、;E及产分别为支护材料的弹性模量及泊桑比;“为支护内半径，m;b为支护外半径，m;尸二为竖井变形地压，尸。一尸b，MPa。 (高磊)
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