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- STUDY ON BRITTLE ROCK FAILURE CRITERION BASED ON STRAINS 基于应变的岩石类脆性材料损伤研究
- rock failure criterion 岩石破坏判据
- The research results, taken as criterion of prediction of rock failure, is of important instru... 结论作为预警岩体破坏的准则有重要参考价值。
- The adopted failure criterion was a composite Mohr-Coulomb criterion with tension cut-off and the post-peak constitutive relation of rock was linear strain-softening. 计算中采用了莫尔－库仑与拉破坏复合的破坏准则，峰后岩石本构关系为线性应变软化。
- The global failure criterion of rock mass element is proposed based on the analysis of releasable strain energy and is well accordance with the result of biaxial compressive test on marble. 基于可释放应变能建立岩体单元的整体破坏准则，该准则与大理岩的双压试验结果符合得比较好。
- The failure criterion of asphalt concrete was not in good agree with the Mohr-Coulomb criterion. 另外，沥青混凝土的破坏准则也并非符合莫尔-库仑破坏准则。
- According to Mohr-Coulomb failure criterion, the axial stress at failure in rock-soil triaxial tests is in linear relationship with the lateral stress. 根据莫尔-库仑破坏准则,岩土三轴试验的轴向破坏应力与围压之间呈线性关系。
- A new failure criterion and elastic\|plastic constitutive relation for concrete under biaxial stresses is discussed in this paper. 讨论了混凝土在双向应力作用下的破坏准则和弹塑性本构关系。
- Rock failure mode during drilling using ballas bit is similar ro shearing with high RPM andlow WOB. 由于巴拉斯钻头是剪切破岩，并且有高转速、低钻压的工作特性，笔者用它进行纠斜和防斜。
- An extended Mohr-Coulomb failure criterion is used to allow for shear strength variations as a result of changes in matric suction. 二是研究雨水入渗引发滑坡的物理过程并建立定量的分析模型，然后利用这种分析模型进行参数研究。
- It gives clear definition and classification of soft rock, and a comprehensive study has been made on the mechanism of soft rock failure. 首先明确了软岩的定义及分类，对影响软岩隧道稳定因素，软岩隧道失稳的力学机理和变形力学机制作了较为全面的研究。
- First, the changing laws of cyclic strength, cyclic failure criterion and cyclic accumulate deformation are studied under different testing stress states. 主要的研究工作有以下几个方面:首先在不同试验应力状态下,研究饱和软粘土循环强度、循环破坏准则以及循环累积变形的变化规律。
- Under the different loading considerations and constraint conditions, rock failure happens with one type (tension or shear) or two types concurrence. 由于具体的承载条件和约束条件不同,岩体破坏时,可能是以某一种(拉或剪)形式破坏,也可能以两种破坏形式并存发生。
- The failure criterion is a composite Mohr-Coulomb criterion with tension cut-off.Beyond the peak stress, the linear strain-softening constitutive relation is adopted. 峰值强度后的本构模型取为莫尔库仑剪破坏与拉破坏复合的应变软化模型。
- Rock Failure Process Analysis (RFPA) code is used to study the failure process of rock disks with pre-existing cracks under dynamic loading. 摘要本文利用岩石破裂过程分析系统(RFPA)研究了含有不同角度预制裂纹的岩石试样在动态载荷作用下的破坏过程。
- The failure criterion of original procedures in ADINA is modified by comparing the computation of a simple model to verify the feasibility of the user-defined materials in ADINA. 摘要通过一简单模型的计算比较，更改了ADINA原程序中的屈服凖则，验证了ADINA用户自定义材料的可行性。
- The elasto-plastic dynamic analysis methods, theoretical models of structures and failure criterion of reinforced concrete structures under earthquake are reviewed. 摘要综述结构弹塑性动力响应分析的方法、理论模型，以及地震作用下钢筋混凝土结构破坏准则。
- It is also shown that under the creep limit failure criterion, the creep internal stress method has the advantage of less test time in comparison with the isothermal ... 而以蠕变极限为失效准则的蠕变内应力法与常规的以蠕变试验为基础的等温外推法相比,还具有试验时间短的优点。
- The stability of coal pillar of the short-wall mining was analyzed systemically by numerical simulation with the rock failure process analysis software (RFPA2D). 采用岩石破裂过程分析软件RFPA2D系统，对短壁机械化开采的煤柱稳定性进行数值计算与分析。
- Based on the ridge function derived from Matsuoka-Nakai,Lade-Duncan and Ottosen strength failure criteria,a modified Ottosen failure criterion is proposed and verified by the true triaxial strength test data of concrete and rock. 基于从Matsuoka-Nakai;Lade-Duncan和Ottosen等强度破坏准则导出的角隅函数;提出了修正的Ottosen强度破坏准则表达式;并通过混凝土和岩石的真三轴强度破坏试验结果进行验证.
