1) discrete crack model
分离裂缝模型
1.
Mode I and mixed-mode fracture tests of concrete beams are analyzed using smeared and discrete crack models.
数值算例表明弥散裂缝模型与分离裂缝模型计算精度接近但其效率更高。
2.
For numerical simulation of transition process from continua to discontinua, theⅠ/Ⅱ tensile-shear mixed mode fracture of quasi-brittle materials such as concrete and rock is analyzed by coupling respectively the smeared rotating crack model and the discrete crack model with deformable discrete element method(DEM).
文末指出,基于离散单元法的分离裂缝模型能够实现系统在外载作用下破坏全过程仿真。
3.
For the purpose of numerical simulation of transition process from continua to discontinua and even to structural collapse,the fracture of quasi-brittle materials such as concrete and rock under tensile state is analyzed by rotating smeared-crack model and discrete crack model based on the deformable distinct element method(DEM).
为了进行从连续介质到非连续介质转化的数值模拟,实现结构破坏全过程的仿真分析,本文基于三维变形体离散元法,分别采用弥散的旋转裂缝模型和分离裂缝模型分析了混凝土、岩石等准脆性材料的受拉开裂行为。
2) crack-analyzing model
裂缝分析模型
1.
A crack-analyzing model is proposed and a.
同时还建立了混凝土三向受力状态下裂缝分析模型,推导了开裂后应力释放公式,并确定了钢材的本构关系,从而最后实现了钢管混凝土三维非线性有限元全过程分析,通过对钢管混凝土轴心受压算例分析表明,所建立的模型具有准确、有效的作用。
3) crack model
裂缝模型
1.
Fixed and rotating smeared-crack models based on a deformable distinct element method were developed to analyze the fracture of quasi-brittle materials such as concrete and rock under tension.
为进行连续介质到非连续介质转化的数值模拟,实现结构破坏过程的仿真分析,将固定和旋转的弥散裂缝模型与变形体离散元方法结合应用于混凝土、岩石等准脆性材料的受拉开裂过程分析。
2.
The crack models of concrete and stress-strain relationship in finite element analysis are introduced,which can simulate the failure process of hydraulic concrete and give help for simulation analysis utilizing finite element method.
给出了有限元分析方法中的混凝土裂缝模型及其应力应变关系,以较好地模拟水工混凝土的开裂作用,从而有利于利用有限元法进行仿真分析,然后结合实际工程阐述了水工混凝土温度控制与防裂的技术措施,供相关人员参考。
4) Fracture model
裂缝模型
1.
Research on gas bearing response to fracture models of Xujiahe formation in deep west Sichuan depression.;
川西坳陷深层须家河组裂缝模型含气响应研究
2.
From Hudson theory,this paper deduces the reflectance formula for the fracture model based on elastic-acoustic approximation.
在Hudson理论的基础上推导出基于弹性—声学近似的裂缝模型反射系数计算公式,然后用变参考慢度Rytov近似波场延拓算子,对给定裂缝模型进行正演和偏移,并分析其波场特征,得到以下三点结论:1在当前地震分辨率下,不能识别单个裂缝,但可以探测裂缝发育带;2裂缝带达到一定的宽度和密度,可以用地震方法检测裂缝的分布,潜山内幕反射波的范围与强弱,有利于研究裂缝发育带的宽度和密度;3裂缝带的低频复波反射,表明在裂缝发育带,地震波频率减低,意味着用地震波的频率特征是可以检测裂缝。
3.
Because there are two types of reservoir space with different porosity and permeability in the volcanic reservoir,matrix model and fracture model are established using PeterlTM software and Fraca software respectively for comprehensively describing the attributes of the volcanic reservoir such as lithfacies,porosity and permeability.
针对裂缝性火山岩油藏存在孔隙度、渗透率完全不同的2类储集空间,分别应用PeterlTM软件和Fraca软件建立基质模型与裂缝模型。
5) discrete fracture network model
离散裂缝网络模型
6) crack band model
裂缝带模型
1.
The temperature cracks are calculated by use of a crack band model, and the stress and cracking of the concrete wall are computed by using the half-analytical iteration method.
采用裂缝带模型计算温度裂缝,用半解析迭代法进行了混凝土墙的温度应力和开裂计算。
2.
In the analysis, a semi analytical method is proposed to solve nonlinear differential equations, and Bazant s crack band model is used to calculate the temperature induced cr.
研究中采用Bazant教授提出的裂缝带模型计算温度裂缝 ,采用半解析迭代法逐步加载计算温度、应力和裂缝的产生与扩展 。
补充资料：相分离模型
分子式：
CAS号：
性质：一种描述胶束形成的理论模型。其特点是将胶束及形成胶束的表面活性剂的反离子看作一个分离的类似于新的纯相，它在临界胶束浓度时出现。根据这一模型可以得出胶束形成过程标准热力学函数变化的关系式。此模型难以描述胶束荷电时的状况。
CAS号：
性质：一种描述胶束形成的理论模型。其特点是将胶束及形成胶束的表面活性剂的反离子看作一个分离的类似于新的纯相，它在临界胶束浓度时出现。根据这一模型可以得出胶束形成过程标准热力学函数变化的关系式。此模型难以描述胶束荷电时的状况。
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