Applied Rheology最新文献_第3页

CT measurement of damage characteristics of meso-structure of freeze-thawed granite in cold regions and preliminary exploration of its mechanical behavior during a single freeze-thaw process 寒冷地区冻融花岗岩中层结构损伤特征的 CT 测量及其在单次冻融过程中的力学行为初探

IF 1.8 4区工程技术

Applied Rheology Pub Date : 2023-12-09 DOI: 10.1515/arh-2023-0106

Chunyang Zhang, Tao Tan, Bo Ke, Bingde Ma, Bibo Dai, Zhiheng Fang, Ercheng Zhao

{"title":"CT measurement of damage characteristics of meso-structure of freeze-thawed granite in cold regions and preliminary exploration of its mechanical behavior during a single freeze-thaw process","authors":"Chunyang Zhang, Tao Tan, Bo Ke, Bingde Ma, Bibo Dai, Zhiheng Fang, Ercheng Zhao","doi":"10.1515/arh-2023-0106","DOIUrl":"https://doi.org/10.1515/arh-2023-0106","url":null,"abstract":"The freeze-thaw (FT) damage characteristics of granite after different FT cycles were studied using computed tomography (CT) images. The three-dimensional (3D) volume numbers in the image were extracted to obtain the 3D pore structure of representative volume elements (RVEs) of granite under different FT cycles. The CT images of granite after 80 FT cycles were selected to draw reference lines for quantitative analysis of the distribution of meso-cracks in granite after FT cycles. Subsequently, a finite element model was established to explore the mechanical properties of minerals in granite during a single FT process. The results show that the FT damage inside the granite exhibits fracture characteristics, and the number of internal cracks, cracks area, and voxel porosity increase with the increase of FT cycles. After 80 FT cycles, the distribution of meso-cracks on the cross-section of granite exhibits significant anisotropy, and the distribution density and variation coefficient of meso-cracks vary with the dip direction angle of the reference line. The maximum principal stress and strain in the finite element model are negatively related to temperature. The maximum principal stress and strain of biotite minerals are consistently higher than those of feldspar and mica during FT cycles. The results can provide a reference for exploring the internal mechanism of the weakening of mechanical properties of granite microstructure caused by FT damage in cold regions.","PeriodicalId":50738,"journal":{"name":"Applied Rheology","volume":"7 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138563182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An effective method for real-time estimation of slope stability with numerical back analysis based on particle swarm optimization 基于粒子群优化的数值反分析实时估计边坡稳定性的有效方法

IF 1.8 4区工程技术

Applied Rheology Pub Date : 2023-01-01 DOI: 10.1515/arh-2022-0143

Jiaqiang Zou, Hao Chen, Yu-hong Jiang, W. Zhang, Aihua Liu

{"title":"An effective method for real-time estimation of slope stability with numerical back analysis based on particle swarm optimization","authors":"Jiaqiang Zou, Hao Chen, Yu-hong Jiang, W. Zhang, Aihua Liu","doi":"10.1515/arh-2022-0143","DOIUrl":"https://doi.org/10.1515/arh-2022-0143","url":null,"abstract":"Abstract The purpose of this article is to provide an effective approach to evaluate slope stability in real-time in a reservoir area, which is significant for carrying out risk management for landslide disaster prevention in various engineering practices. A comprehensive idea for stability estimation of bank slope under the influence of rainfall or the reservoir water level is presented in this work. Slope stability analysis and back analysis of soil parameters are both included based on numerical simulation. The mechanical parameters of the bank slope were first back-analyzed using particle swarm optimization (PSO), and real-time stability analysis with high accuracy and efficiency was then established based on multiple continuously monitored displacements. Two case studies were carried out in this study. The results show that (1) based on the real-time monitored displacement and numerical simulation, the mechanical parameters of the slope can be reasonably retrieved through PSO; and (2) based on the inverse mechanical parameters, the safety factors of the slope can be numerically obtained, so that the real-time estimation of slope stability can be realized.","PeriodicalId":50738,"journal":{"name":"Applied Rheology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48615941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tailoring a symmetry for material properties of tellurite glasses through tungsten(vi) oxide addition: Mechanical properties and gamma-ray transmissions properties 通过添加钨（vi）氧化物为碲酸盐玻璃的材料特性定制对称性：机械特性和伽马射线透射特性

IF 1.8 4区工程技术

Applied Rheology Pub Date : 2023-01-01 DOI: 10.1515/arh-2022-0151

G. Almisned, Z. Khattari, El Rabaa, Y. Rammah, Duygu Sen Baykal, G. Kilic, H. Zakaly, A. Ene, H. Tekin

{"title":"Tailoring a symmetry for material properties of tellurite glasses through tungsten(vi) oxide addition: Mechanical properties and gamma-ray transmissions properties","authors":"G. Almisned, Z. Khattari, El Rabaa, Y. Rammah, Duygu Sen Baykal, G. Kilic, H. Zakaly, A. Ene, H. Tekin","doi":"10.1515/arh-2022-0151","DOIUrl":"https://doi.org/10.1515/arh-2022-0151","url":null,"abstract":"Abstract We report a correlation outcome for mechanical and gamma-ray transmission properties of tellurite glasses by increasing tungsten(vi) oxide concentration in glass structure. The mechanical properties as well as Poisson’s ratio (σ) of the studied glasses are estimated by applying Makishima–Mackenzie model. Gamma-ray attenuation properties using various fundamental parameters are determined in 0.015–15 MeV energy range. Poisson’s ratio (σ) decreased from 0.43017 to 0.42711, while all elastic moduli increased linearly with the molar increment of either [WO3] or [TeO2] in the molecular structure of the glass network. Moreover, gamma-ray attenuation properties are enhanced as a function of increasing WO3 substitution amount from 30 to 50% mol in the glass structure. Half-value layer values at 15 MeV are found to be between 2.648 and 2.8614 cm. I4 samples with a composition of 20TeO2–50WO3–30GdF3 and density of 6.0530 g/cm3 was found to have superior material properties in terms of elastic and gamma-ray attenuation properties. It can be concluded that maximized WO3 contribution into the tellurite glasses may be considered as a critical tool in terms of establishing a symmetry between mechanical and gamma-ray attenuation properties for high-density tellurite glasses for their potential utilization in nuclear waste management, radiation shielding, and radioactive source transportation purposes.","PeriodicalId":50738,"journal":{"name":"Applied Rheology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47920279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Analysis of complex fluid discharge from consumer dispensing bottles using rheology and flow visualization 使用流变学和流动可视化分析消费者配药瓶的复杂流体排放

IF 1.8 4区工程技术

Applied Rheology Pub Date : 2023-01-01 DOI: 10.1515/arh-2022-0144

Baran Teoman, A. Potanin, P. Armenante

{"title":"Analysis of complex fluid discharge from consumer dispensing bottles using rheology and flow visualization","authors":"Baran Teoman, A. Potanin, P. Armenante","doi":"10.1515/arh-2022-0144","DOIUrl":"https://doi.org/10.1515/arh-2022-0144","url":null,"abstract":"Abstract Complex fluids, such as gels, shampoos, and creams, are ubiquitous in the consumer product industry. However, little information is available on their discharge from consumer packaging, often resulting in a considerable heel, i.e., the residual waste material after the discharge process is complete. Here, we used rheological analysis and particle image velocimetry (PIV) to investigate the discharge of rheologically different fluids from a dispensing bottle provided with a modified hand pump. The fluids were described in terms of rheological parameters established by fitting rheometric data with the Carreau equation. The effect of operational parameters was also studied, which included the dip tube diameter, suction pressure, and volumetric flow rate. The data were also analyzed in terms of the dimensionless region of interest (ROI), which captures the relative “high-velocity” region in the fluid during the discharge process and is measured directly using PIV. Both rheological and operational parameters affect the heel at the end of the discharge process. The results presented here enable predicting the heel either by measuring ROI as in the case of transparent fluids and packages or by making use of the heel correlation with operational and rheological parameters also established in this work. Graphical abstract","PeriodicalId":50738,"journal":{"name":"Applied Rheology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45898617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Research and optimization of tunnel construction scheme for super-large span high-speed railway tunnel in poor tuff strata 贫凝灰岩地层中特大跨高速铁路隧道施工方案研究与优化

4区工程技术

Applied Rheology Pub Date : 2023-01-01 DOI: 10.1515/arh-2023-0101

Jianfei Ma, Shaohui He, Xiabing Liu, Jiaxin He

{"title":"Research and optimization of tunnel construction scheme for super-large span high-speed railway tunnel in poor tuff strata","authors":"Jianfei Ma, Shaohui He, Xiabing Liu, Jiaxin He","doi":"10.1515/arh-2023-0101","DOIUrl":"https://doi.org/10.1515/arh-2023-0101","url":null,"abstract":"Abstract The rapid traffic developments create demands for shallow four-line high-speed railway tunnels in weak soils, while construction technologies of such tunnels have yet to be reported. In this article, the construction schemes for a shallow four-line high-speed railway tunnel with a span of 26.3 m in weak tuff strata are investigated by numerical analysis and in-situ tests. First, 20 construction schemes of the shallow super-large span high-speed railway tunnel are proposed and simulated by the Finite Difference Method, including eight schemes for grade V rocks and 12 schemes for grades IV and III rocks. The mechanical response of grade V rock mass is simulated by the Bolt–Kelvin Mohr–Coulomb rheological model. The influence of construction method, rock grade, area, quantity, and excavation sequence of pilot tunnels on the rock deformation and the internal force of the primary support are comparatively explored. For further analysis, an 8 month field test was conducted to study the optimized effect of the construction scheme. Finally, a suggested construction method selection chart for super-large span tunnels in weak rocks (spans between 17 and 34 m) has been proposed. The research conclusion could provide a reference for building the super-large span tunnel in complex conditions.","PeriodicalId":50738,"journal":{"name":"Applied Rheology","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135440219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thickened fluids classification based on the rheological and tribological characteristics 基于流变学和摩擦学特性的增稠流体分类

4区工程技术

Applied Rheology Pub Date : 2023-01-01 DOI: 10.1515/arh-2023-0102

Parisa Poursani, Seyed M. A. Razavi

引用次数: 0

A study on the fractal and permeability characteristics of coal-based porous graphite for filtration and impregnation 过滤浸渍用煤基多孔石墨的分形及渗透特性研究

IF 1.8 4区工程技术

Applied Rheology Pub Date : 2023-01-01 DOI: 10.1515/arh-2022-0157

Qili Wang, J. Wang, Shuwei Yang, Jiarui Sun

{"title":"A study on the fractal and permeability characteristics of coal-based porous graphite for filtration and impregnation","authors":"Qili Wang, J. Wang, Shuwei Yang, Jiarui Sun","doi":"10.1515/arh-2022-0157","DOIUrl":"https://doi.org/10.1515/arh-2022-0157","url":null,"abstract":"Abstract In order to distinguish the differences in the heterogeneous fractal structure of porous graphite adopted in the filtration and impregnation, the fractal dimensions (FDs) were obtained by the mercury intrusion porosimetry (MIP) to calculate the volumetric FDs of ten graphite samples, following the fractal theory. The FD expression of the tortuosity along with all the parameters from the MIP test was optimized to simplify the calculation. In addition, the percolation evolution process of mercury in the porous media was analyzed based on the data collected in the experiment. According to the analysis conducted, the FDs in the backbone formation regions of samples varied from 2.695 to 2.984, with 2.923 to 2.991 in the percolation regions and 1.224 to 1.544 in the tortuosity. Based on the correlation coefficients ( R 2 ) ({R}^{2}) ranging between 0.906 and 0.999, and the root mean square errors ranging between 0.0001 and 0.0065 mL g−1, a high level of reliability was identified. According to the MIP test, the mercury distribution in porous graphite demonstrated a transitional process from the local aggregation, the gradual expansion, the infinite cluster connection to the global connection.","PeriodicalId":50738,"journal":{"name":"Applied Rheology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49595267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical behavior of a new similar material for weathered limestone in karst area: An experimental investigation 喀斯特地区风化石灰岩一种新型相似材料的力学性能试验研究

IF 1.8 4区工程技术

Applied Rheology Pub Date : 2023-01-01 DOI: 10.1515/arh-2022-0154

Nan Jiang, Panpan Guo, Hui Zhang, Fangqing Lu, Jian Liu

{"title":"Mechanical behavior of a new similar material for weathered limestone in karst area: An experimental investigation","authors":"Nan Jiang, Panpan Guo, Hui Zhang, Fangqing Lu, Jian Liu","doi":"10.1515/arh-2022-0154","DOIUrl":"https://doi.org/10.1515/arh-2022-0154","url":null,"abstract":"Abstract Considering the important effect of mineral composition, this article deduces the similarity criterion based on the dimensional method. Similar materials suitable for tuffs with different degrees of weathering in karst areas are made. By virtue of the orthogonal experiment, the mechanical behaviors of the similar materials with various mix proportions are systematically investigated. It provides an important reference and basis for the next proposed model tests on the stability of tuff strata in karst areas. The results indicate that a stable mechanical behavior can be achieved for the similar material made of quartz sand, cement, gypsum, limestone powder, diatomite, red clay, and water. Moreover, it is also found that the aggregate and the binder have an observable influence on the mechanical behavior of the similar material. With an increase in the amount of cement and gypsum, the homogeneity of the sample increases, failure mode in which the specimen shows lateral compression damage. However, with increasing the amount of quartz sand, there is a tendency that a weak structural plane will be generated within the sample. Thus, this similar material can be satisfactorily used for simulating limestone of different weathering degrees in a scaled model test.","PeriodicalId":50738,"journal":{"name":"Applied Rheology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46338601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of lead-free CsSnI3-based perovskite solar cell structure 无铅cssni3基钙钛矿太阳能电池结构优化

IF 1.8 4区工程技术

Applied Rheology Pub Date : 2023-01-01 DOI: 10.1515/arh-2022-0138

Hayat Arbouz

引用次数: 4

Application of the ramp test from a closed cavity rheometer to obtain the steady-state shear viscosity η(γ̇) 应用闭腔流变仪斜坡试验获得稳态剪切粘度η（γ̇）

IF 1.8 4区工程技术

Applied Rheology Pub Date : 2023-01-01 DOI: 10.1515/arh-2022-0149

Felix Ellwanger, Christos K. Georgantopoulos, H. Karbstein, Manfred Wilhelm, M. Azad Emin

{"title":"Application of the ramp test from a closed cavity rheometer to obtain the steady-state shear viscosity η(γ̇)","authors":"Felix Ellwanger, Christos K. Georgantopoulos, H. Karbstein, Manfred Wilhelm, M. Azad Emin","doi":"10.1515/arh-2022-0149","DOIUrl":"https://doi.org/10.1515/arh-2022-0149","url":null,"abstract":"Abstract The steady-state shear viscosity η ( γ ̇ ) eta (dot{gamma }) is required in controlling processing parameters for the extrusion processing of polymer melts. A new method, the so-called ramp test, is investigated in this study to obtain the steady-state shear viscosity with a closed cavity rheometer (CCR). To verify the method and the accuracy of the CCR data, three commercial polyolefin polymers, a low-density polyethylene (LDPE), a linear low-density polyethylene (LLDPE), and a polybutadiene (PBD), were used as model systems. Measurements of the magnitude of the complex viscosity ∣ η ⁎ ( ω ) ∣ | {eta }^{ast }(omega )| were compared with the steady-state shear viscosity data obtained by capillary rheometer and CCR. Further, time–temperature superposition master curves of the magnitude of the complex viscosity and steady-state shear viscosity obtained by CCR were developed for LLDPE and PBD. The influence of the cavity sealing on the instrument’s accuracy to obtain the steady-state shear viscosity was investigated using the finite element method simulations. Thus, it was shown that the ramp test performed by CCR is a practical method to determine reliable and reproducible data of the steady-state shear viscosity within a wide range of temperatures (T = 50–180°C) for low and high viscous materials ( ∣ η ⁎ ( ω ) ∣ | {eta }^{ast }(omega )| = 1.6–480 kPa s, M w = 144–375 kg mol−1).","PeriodicalId":50738,"journal":{"name":"Applied Rheology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46739893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1