concasseur uniaxial compression

Mechanical behavior of rock-filled concrete with uniaxial ...

Abstract Uniaxial compression tests of rock-filled concrete (RFC) and self-compacting concrete (SCC) were used to measure the complete stress-strain curves for these samples.

Mechanical analysis and failure modes prediction of composite

2021.11.24 Uniaxial compression tests were carried out on the composite rock samples to reveal their mechanical properties. It was concluded that a composite rock

Modelling of concrete behaviour in uniaxial compression and

2015.1.28 The paper focuses on the DEM modelling of the behaviour of plain concrete during uniaxial compression and uniaxial tension using the discrete element

Uniaxial compressive mechanical properties and stress

2024.1.12 The results demonstrate that the stress strain model developed on the foundation of the Weibull-Lognormal model, which considered the influence of the initial

Discrete element modelling of the uniaxial compression

2023.7.1 The objective of this study is to propose a 3D discrete element method (DEM) model to simulate the uniaxial compression process and analyze the meso

Uniaxial compression mechanical properties and damage constitutive ...

2021.9.10 In this paper, uniaxial compression tests were carried out on limestone specimens under different osmotic pressures, the influence of osmotic pressure on the

Confinement-dependent failure criterion for high-strength

2023.2.22 To meet the challenges specific to the high-strength concrete and promote its application in modern civil engineering structures, this study has presented a

单轴压缩下页岩类脆性材料细观损伤演化的离散元分析 ...

2022.2.25 ZHONG Ji-chen, WANG Jiao, LI Xiang-yu, CHU Xi-hua. 2022. Discrete element analysis of meso-damage evolution of shale-like materials under uniaxial

Proposed Constitutive Law of Uniaxial Compression for

2020.4.28 The stress–strain curve of concrete under uniaxial compression is the most basic constitutive relation, which can fully reflect the strength, toughness, and ductile

Uniaxial Compressive Strength Determination of Rocks Using

2021.5.31 The CNN model is, thus, a powerful tool for predicting the mechanical properties of rocks, classifications and analyzing the associated images. In this field, Su

双轴受压状态下的高延性纤维增强水泥基复合材料本构

2020.1.9 摘要: 基于Darwin和Pecknold考虑混凝土双轴力学行为的方法，建立一个同时考虑双轴受压状态下非线性力学行为和抗压强度变化的高延性纤维增强水泥基复合材料 (ECC)二维正交各向异性本构模型。. 在因

GitHub

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Modelling of concrete behaviour in uniaxial compression and

2015.1.28 The paper focuses on the DEM modelling of the behaviour of plain concrete during uniaxial compression and uniaxial tension using the discrete element method. The model takes into account the concrete heterogeneity at the meso-scale level. The effects of concrete density, size of aggregate grains and specimen size on the

Essai de compression — Wikipédia

2024.1.17 Essai de compression. Un essai de compression mesure la résistance à la compression d'un matériau sur une machine d'essais mécaniques suivant un protocole normalisé . Les essais de compression se font souvent sur le même appareil que l' essai de traction mais en appliquant la charge en compression au lieu de l'appliquer en traction.

含端部裂隙大理岩单轴压缩破坏及能量耗散特性 - USTB

2019.12.7 对含端部双裂隙ϕ50 mm×50 mm的圆柱体大理岩试样进行单轴压缩试验，并利用高速摄影仪实时记录试样破坏过程，研究了端部裂隙长度和倾角对大理岩力学特性及裂纹扩展规律的影响。研究表明，当裂隙长度达到门槛值前，试样的单轴抗压强度的弱化程度较低，弹性模量、峰值应变的变化较小。

约束混凝土单轴弹塑性损伤本构模型

2017.10.31 Table 1 Uniaxial constitutive model for confined concrete D D 建议者表达式建立方法表达式建立方法全曲线方程 Richart c0 14.1l f f 方法1 15( 1)D 方法1 — Mander 基于William-Warnke 准则方法2 15( 1) D 方法1 cc 1 f xr rxr

Materials Free Full-Text Uniaxial Compression Failure and

2022.8.18 Recycled aggregate concrete (RAC) is a kind of five-phase composite material at the meso-level. It has a more complex interfacial transition zone (ITZ) than ordinary aggregate concrete (NAC), which is an important factor affecting the meso-failure of RAC. In addition, the maximum aggregate size plays an important role in the nonlinear

超高性能混凝土单轴拉压本构关系研究 - buaa.cn

2018.7.3 摘要: 超高性能混凝土（UHPC）是一种具有超高强度、超高耐久性和超高韧性的新型水泥基复合材料，因其优越的性能而受到国内外土木工程领域的广泛关注，具有广阔的工程应用前景。. 单轴受拉和受压应力-应变本构模型是进行UHPC构件力学性能分析的前提

单轴压缩作用下岩石脆性破裂机制的声发射识别 - Sun Yat ...

2022.7.15 In this study， uniaxial compression experiments were performed on sandstone and granite samples to study the failure processes inversed by acoustic emission （AE） monitoring. Macroscopically， the sandstone samples exhibited a shear faulting mode while the granite samples an axial splitting mode.

堆石混凝土单轴受压力学性能

2022.2.18 Uniaxial compression tests of rock-filled concrete (RFC) and self-compacting concrete (SCC) were used to measure the complete stress-strain curves for these samples. The results showed the failure modes, peak stresses, peak point strains, elastic moduli and full stress-strain curves of the rock-filled concrete and self-compacting

Size effect on fracture behavior of quasi-brittle materials

2023.4.28 Understanding the size dependence of quasi-brittle materials' fracture behavior is useful in assessing the safety of flawed rock engineering structures. In this study, a set of uniaxial compression tests were conducted to scrutinize the mechanical properties and crack morphology of cubic specimens with sizes of 75 mm, 100 mm, 125 mm and

Estimation of contact forces of granular materials under uniaxial ...

2021.11.22 Figure 8 depicts the spatial distribution of NPMNCFs at the XZ and YZ planes of the granular system at different uniaxial compression axial strains. The XZ and YZ planes contain the centroid of the granular system and are vertical to the y-axis and x-axis, respectively. Only five uniaxial compression states are presented due to space limitations.

混凝土单轴压缩过程中损伤演化与声发射分析

2018.3.4 本文通过混凝土试样的单轴压缩试验及声发射监测，综合分析了试验过程中裂隙的发育、扩展和对应的声发射特征.通过声发射能量，建立了描述混凝土试样加载过程力学性质的损伤本构模型，得到如下结论：. 1) 声发射参数变化从侧面较为准确地反映了混凝土

Mechanical Behavior of Fiber-Reinforced Engineered ...

In this paper, uniaxial compression tests were carried out on ECC with five different mix proportions and compressive strength ranging from 35 to 60 MPa. Complete stress-strain curves were obtained. Based on the test results, the compressive parameters, such as the elastic modulus, engineering strain at the peak stress, the Poisson's ratio and the

Open Access proceedings Journal of Physics: Conference

2022.9.5 The unconfined compression tests, the uniaxial graded loading and unloading tests, and the uniaxial cyclic loading and unloading tests was carried out in the sandstone mechanics tests system of RMT-150B, with a loading rate of 0.5KN/s. In the uniaxial graded loading and unloading tests, because the compaction stage of sandstone

Numerical study on size effect and anisotropy of columnar

2021.12.24 Uniaxial compression tests of rock mass with columnar joints were carried out by the triaxial rheological test system. The loading mode was axial stress control with a loading rate of 0.6 MPa/min. In this paper, the specimens used for numerical verification were rectangular specimens with a width of 50 mm and a height of 100 mm as a plane ...

Numerical simulation of size effect of defective rock under compression ...

2023.1.9 where \({R}_{C}\) is the uniaxial strength, D is the diameter of the specimen.. However, most of the above scholars study the size effect of rock by controlling the diameter of the sample, and the ...

Study on mechanical behavior and damage process of

2021.8.12 It can be seen from Fig. 7a that the peak stress of uniaxial compression concrete under uniform load is 64.75 MPa, and the peak stress of uniaxial compression concrete under eccentric load is 25. ...

单轴压缩下加锚裂隙类岩石试块裂纹扩展试验及PFC3D模拟 ...

2020.10.8 摘要：为探究锚杆对裂隙岩体的锚固效应及其对裂纹扩展的影响，分别制作裂隙倾角为15o、30o、45o、60o、75o以及90o的无锚和加锚类岩石试块，利用MTS816岩石伺服试验机进行单轴压缩试验，并采用声发射和数字照相技术对裂纹扩展过程进行同步监测和记录。. 此外 ...

Research on Damage and Acoustic Emission Properties

2021.5.5 The results are as follows: (1) The whole stress–strain process of uniaxial compression can be divided into three stages: compaction stage, linear elastic stage, yield stage and failure stage. (2) In the middle of the period, the AE of the sample increases slowly and rapidly in the process of compression.

(PDF) Behavior of High-Performance Concrete

2008.11.1 The results show that the ratio between the biaxial compression strength and the uniaxial compression strength was 1.44–1.58 for RPC. When the stress ratio under compression-tension was −0.05 ...

Compressive behavior and stress–strain relationships of

2021.2.22 In general, the most common way to define the material behavior is by uniaxial stress–strain curves, obtained through the uniaxial tension and compression tests. As previously mentioned, more work has been done to characterize the full tensile behavior of UHPC using direct tension testing as opposed to the full compressive behavior.

Frontiers Experimental and numerical

2022.7.25 Engineering problems are related to the failure of geological material, especially that of jointed rock masses. To investigate the influence of confining stress and inclination angle β on cracking behavior

一种新的混凝土各向异性弹塑性损伤本构模型及其数值实施

2021.4.20 More Information. 摘要. 该文的目的是建立一种新的、相对简单的混凝土各向异性塑性损伤本构模型，以方便的模拟混凝土结构的破坏行为。. 为了更好地描述混凝土在拉、压荷载作用下的不同损伤机制，建立了拉、压不同的两种损伤演化方程，用于确定各向异

完整岩石拉压应力状态下的张裂破坏准则1 - cstam.cn

2021.6.7 reliable uniaxial tensile strength of rock can be obtained. Key words intact rock, tension and compression stress, extension rate, tensile failure, strength criterion 引言岩石是一种天然材料, 它的力学特性与金属材料有很大不同, 如何建立能反映岩石固有特性的强

A Simplified Uniaxial Stress-strain Curve of Concrete and

uniaxial compression 2. 2 The curve for uniaxial tension The stress-strain curve of concrete under uniaxial tension is similar to that under uniaxial compression. It can also be divided into two stages: ascending stage and descending stage[9]. But its ascending stage shows more obvious linear elastic characteristics. The ascending stage

Energy dissipation and 3d fracturing of Backfill

2022.7.25 Acoustic emission characteristics and energy mechanism in karst limestone failure under uniaxial and triaxial compression Bulletin of Engineering Geology and the Environment. , 78 ( 3 ) ( 2017 ) , pp. 1427 - 1442 , 10.1007/s10064-017-1189-y

Uniaxial Compressive Strength Determination of Rocks Using

2021.5.31 The uniaxial compression strength (UCS) is a typical parameter for rock mass classification in rock engineering (Barton 1973; Barton and Choubey 1977).The UCS determination requires a sufficient number of well-prepared specimens in accordance with the suggested methods by the International Society of Rock Mechanics (ISRM) and is

On the Mechanical Properties and Failure Mechanism of

2022.10.23 5.1 Crack Morphology Under Uniaxial Compression. Figure 15 reveals that, under uniaxial compression, tensile cracks are generally parallel to the orientation of the major principal stress, which is consistent with the observation from the surface of the fractured sample (Figs. 9 and 10). The growth and coalescence of these cracks lead to ...

A simplified numerical simulation of uniaxial compression for ...

2024.1.12 Finite element method is used to simulate the uniaxial compression process of PANPANFRPC to explore the stress, deformation and crack development in the mesoscopic components. (iv) The macroscopic cracks on the surface of the model are compared with the experimental results to verify the accuracy and reliability of the

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concasseur uniaxial compression

Mechanical behavior of rock-filled concrete with uniaxial ...

Mechanical analysis and failure modes prediction of composite

Modelling of concrete behaviour in uniaxial compression and

Uniaxial compressive mechanical properties and stress

Discrete element modelling of the uniaxial compression

Uniaxial compression mechanical properties and damage constitutive ...

Confinement-dependent failure criterion for high-strength

单轴压缩下页岩类脆性材料细观损伤演化的离散元分析 ...

Proposed Constitutive Law of Uniaxial Compression for

Uniaxial Compressive Strength Determination of Rocks Using

双轴受压状态下的高延性纤维增强水泥基复合材料本构

GitHub

Modelling of concrete behaviour in uniaxial compression and

Essai de compression — Wikipédia

含端部裂隙大理岩单轴压缩破坏及能量耗散特性 - USTB

约束混凝土单轴弹塑性损伤本构模型

Materials Free Full-Text Uniaxial Compression Failure and

超高性能混凝土单轴拉压本构关系研究 - buaa.cn

单轴压缩作用下岩石脆性破裂机制的声发射识别 - Sun Yat ...

堆石混凝土单轴受压力学性能

Size effect on fracture behavior of quasi-brittle materials

Estimation of contact forces of granular materials under uniaxial ...

混凝土单轴压缩过程中损伤演化与声发射分析

Mechanical Behavior of Fiber-Reinforced Engineered ...

Open Access proceedings Journal of Physics: Conference

Numerical study on size effect and anisotropy of columnar

Numerical simulation of size effect of defective rock under compression ...

Study on mechanical behavior and damage process of

单轴压缩下加锚裂隙类岩石试块裂纹扩展试验 及PFC3D模拟 ...

Research on Damage and Acoustic Emission Properties

(PDF) Behavior of High-Performance Concrete

Compressive behavior and stress–strain relationships of

Frontiers Experimental and numerical

一种新的混凝土各向异性弹塑性损伤本构模型及其数值实施

完整岩石拉压应力状态下的张裂破坏准则1 - cstam.cn

A Simplified Uniaxial Stress-strain Curve of Concrete and

Energy dissipation and 3d fracturing of Backfill

Uniaxial Compressive Strength Determination of Rocks Using

On the Mechanical Properties and Failure Mechanism of

A simplified numerical simulation of uniaxial compression for ...

Article aléatoire

单轴压缩下加锚裂隙类岩石试块裂纹扩展试验及PFC3D模拟 ...