In this paper, by systematic numerical modeling by the distinct element method with UDEC code, the effect of physical and mechanical properties of rocks including internal friction angle, Youngs modulus, Poissons ratio, and cohesion on stress field in the vicinity of fractures are analyzed. 应用离散元方法模拟研究了断裂两侧岩石的物理力学性质(包括岩石内摩擦角、弹性模量、泊松比、粘聚力等)对其附近地应力场的影响。
The modulus elasticity and poissons ratio are independent parameters among the rock mechanical parameters. The measure methods of the modulus elasticity and poissons ratio of the rock have dynamic and static method. 岩石的力学参数中,弹性模量和泊松比为独立参数,岩石弹性模量、泊松比的测定方法有动态法和静态法两种。
By means of the measurement, the poissons ratio, elastic modules and compressive strength of this stratum and this region under different formation conditions are obtained. 求得了地层条件下不同钻井、不同方向样品的弹性模量、泊松比和抗压强度、围压之间的关系;
A new direct approach for the solution of Poissons equation arising from electromagnetic problem through finite difference method is Presented. 本文提出了用差分法解电磁场时的一种直接解法。
In terms of elastic theory, the Poissons ratio is related to wave velocity ratio, so that the property of strength and deformation can be determined by measuring the velocity ratio. 根据弹性理论,泊松比与波速比有关,所以可以直接测量冻土的波速比研究冻土的强度及变形性能。
In this paper a method of calculation for the numeric integral for solving υ( t) and three exact formulations of poissons ratio for solid rocket grain were given. 本文提出表征固体火箭药柱泊松比的三个精确表达式和一种数值积分算法。
The Poissons ratio of steel cord isnt a constant. 钢丝帘线的泊松比并非常数。
And because the Poissons ratio of the non-reservoir ( dry sandstone) is near to that of its adjacent rocks, its AVO anomaly is unclear. 非储层(干层)砂岩其泊松比与围岩相近,AVO异常不明显。
At the same time, the temperature deformation and Poissons ratio are also considered. 同时考虑了温度变形及泊桑比的影响。