Non-linear analysis of stiffness of soils under small strain 小应变下土体刚度非线性分析的试验研究
The study result shows that in small strain rate region, strength-strain rate sensitivity is controlled by thermoactivational mechanism. 分析表明,在小应变率的范围内,材料强度-应变率依赖性受热活化机制控制;
For block systems with small strain, finite displacement and finite rotation, a3-dimensional mode distinct element method ( 3MDEM) was presented. 本文针对小应变、大位移和大转动的块体系统建立了三维模态变形体离散元数值模型(3MDEM)。
The uncertainty of G/ Gmax is obvious at the large strain, while that of is obvious at the small strain. 大应变时动剪切模量比不确定性大,而小应变时阻尼比离散显著;
Under the condition of small strain, anisotropy is shown; however, the anisotropy degree decreases with the increase of shear strain, and the approximately isotropy is got. 在小应变条件下,土体表现出各向异性,但随剪切应变的增加而逐渐减小,最终表示为近似各向同性;
The results show that the deformation and pore water pressure are same for the three methods at small strain, but very different at large strain. 计算结果表明,当应变较小时,三种方法计算的变形和孔压值相同;
This model was capable of reflecting the major behavior of sand at small strain, such as non-linearity, high stiffness and drastic change with strain. 模型可以反映小应变时砂土的高模量、非线性以及模量急剧变化等主要特征;
The variation modes for the small strain shear modulus are initial specimen condition and cyclic amplitude dependant, decided by the soil particle contact behaviour. 这种附加变化由土颗粒接触行为决定,受到试样初始条件和振动幅值等多种因素的影响,表现出不同的变化模式。
Effect of stress path circumgyration on shear modulus under small strain 小应变条件下应力路径旋转对剪切模量影响
Effects of seismic vibration on small strain shear modulus of saturated silt 循环振动对饱和粉土初始动剪模量的影响
Development of Research on Small Strain Behavior of Geomaterials 岩土小应变问题研究进展
Although the experiments are restricted to small strain, it still reveals significant nonlinear viscoelastic behavior for polymer materials. 尽管实验限制在小变形范围之内,高分子材料仍表现出明显的非线性粘弹性性能。
So the comparison of large strain method and small strain method should be carried out with total stress method. 当应变很大时,大变形法和小变形法计算的沉降和孔压差异很大。因此,大小变形法分析结果的比较应采用总应力法。
The Soil Constitutive Model in Small Strain Based on Boundary Face 基于边界面理论的小应变土体本构模型
In this paper, the elastic rod theory is applied to establish a static analytical mechanical model for a small strain, large deflection marine pipeline during installation in ocean. 本文运用弹性杆理论建立了小应变、大挠度铺设过程中海底管道的静态分析力学模型。
Effects of material state on the small strain behavior of dry sand 材料状态对干砂小应变特性的影响
Based on the theoretical formulation of TL and UL methods, this article developed the software to compute elastic small strain, large displacement trusses, respectively and calculated some typical examples. 在对TL列式法和UL列式法进行理论推导的基础上,分别编制了这两种方法对弹性阶段小应变大位移桁架问题的计算程序,并对一些典型例题进行了计算。
In recent years, the resonant column test has been used to determine the dynamic properties of soil under the condition of small strain ( < 1 × 10~ (-4)). 近几年来,在我国广泛发展应用共振柱仪试验测定土在小应变(<1×10~(-4))范围内的动力特性。
Isochromatic Line Series Under Condition of Small Strain 小应变情况下的等色线级数
The physical entanglement networks mainly contribute to the initial elastic modulus Go of crosslinked polymer for small strain; 物理缠结网络主要贡献于交联物体在小形变下的起始弹性模量G0;
The Application of GDS in the Measurement of Small Strain GDS在测量土体小应变中的应用
To Interpret Small Strain Pile Signal With Logarithmic Resolution 用对数分解法解释小应变测桩信号
Boundary model for research of soil's small strain 土体小应变特性研究中的边界面模型
By employing the small strain elastic catenary element and beam element based on CR formulation, the contacts and movements between saddles and main cables are modeled accurately and easily. The erection-pa rameters are obtained by the iteration method. 应用了小应变弹性悬链线单元、CR列式法梁单元,精确方便地模拟了鞍座及鞍座与主缆相切点的运动,通过迭代方法得到架设参数。
The equation is similar to Biot's consolidation equation in form and can be simplified to Biot's equation in the case of small strain. 这组方程在形式上与Biot固结方程很相似,小变形条件时亦可直接简化为Biot固结方程。
The result indicates that the typical dynamic recrystallization characters are showed when the samples are deformed with small strain rate and high deformation temperature. The activation energy of dynamic recrystallization was obtained. 结果表明,在变形温度高、应变速率低时表现出典型的动态再结晶特征,确定了动态再结晶激活能。
Unidirectional composite possessed high tensile strength, high modulus, small strain, and the tensile stress-strain curve was basically linear. 单向复合材料拉伸强度高、模量高,应变小,拉伸应力应变曲线基本呈线性关系。
When volume deformation of soil mass in consolidation process is large, considerable errors will be brought out as the consolidation process is analyzed by the small strain consolidation theory of Terzaghi or Biot. 土体变形较大时,用Terzaghi和Biot小应变固结理论进行固结分析可能会带来较大的误差。
A coefficient is introduced to evaluate the small strain effect on wall deflections. 2. Parametric studies have been carried out to study the excavation behavior with respect to wall deflection, soil settlement and apparent pressure. 本文引入了一个系数来衡量土体的小应变特性对基坑墙体变形的影响。2.本文对基坑的墙体变形,墙后土沉降,明视土压力图等作了一系列的参数研究。
Furthermore the finite element method for arch bridge is researched as well, leading to common phenomena in arch analysis& material nonlinear, large displacement with small strain and large displacement with large strain problem. 然后,探讨研究拱桥分析的有限元方法,引出在拱桥分析中常见的材料非线性,大位移小应变以及大位移大应变问题。