WSEAS Transactions on Applied and Theoretical Mechanics最新文献_第10页

Cases of Integrability Which Correspond to the Motion of a Pendulum in the Three-dimensional Space 摆在三维空间中运动的可积性情形

WSEAS Transactions on Applied and Theoretical Mechanics Pub Date : 2021-08-10 DOI: 10.37394/232011.2021.16.8

Maxim V. Shamolin

引用次数: 0

Assessment Principles for the Mechanical Behavior of Clay Soils 粘性土力学性能评价原则

WSEAS Transactions on Applied and Theoretical Mechanics Pub Date : 2021-08-04 DOI: 10.37394/232011.2021.16.6

N. Alamanis, P. Lokkas, T. Chrysanidis, D. Christodoulou, E. Paschalis

{"title":"Assessment Principles for the Mechanical Behavior of Clay Soils","authors":"N. Alamanis, P. Lokkas, T. Chrysanidis, D. Christodoulou, E. Paschalis","doi":"10.37394/232011.2021.16.6","DOIUrl":"https://doi.org/10.37394/232011.2021.16.6","url":null,"abstract":"The factors that determine the geotechnical behavior of soils are mainly their composition, the size of their grains and their moisture content. The design of a soil structure or foundation project must ensure the shear adequacy of the soil in all phases of construction and throughout the life of the project. However, the shear strength, in general, of the soil is not \"constant\" but depends on key external factors such as the prehistory of loads, the time and succession of load states, the overpressure of the pore water as well as other factors such as relative density, or any preload, the pressure field, the rate of change of the intensive state, etc. The influence of the deformations as well as the change of the intensive state during the sampling should not be ignored. Unlike other materials, in clay materials the determination of shear strength and its interpretation is a very complex problem. The aim of this article is to search for the mechanical behavior of clay soils (lignite, kaolinite, marl) as shown by the laboratory illustration related with the problems on shear strength of materials, based on the results of experimental research","PeriodicalId":53603,"journal":{"name":"WSEAS Transactions on Applied and Theoretical Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42861374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Optimization of the Efficiency of a Michell–Banki Turbine Through the Variation of Its Geometrical Parameters Using a PSO Algorith 基于粒子群算法的Michell-Banki涡轮几何参数变化效率优化

WSEAS Transactions on Applied and Theoretical Mechanics Pub Date : 2021-08-02 DOI: 10.37394/232011.2021.16.5

A. J. Perez-Rodriguez, J. S. Río, L. Grisales-Noreña, S. Galvis

引用次数: 2

Influence of Solids Concentration on Solid-Liquid Transportation in a Lime Production Plant 石灰生产装置中固体浓度对固液输送的影响

WSEAS Transactions on Applied and Theoretical Mechanics Pub Date : 2021-06-28 DOI: 10.37394/232011.2021.16.4

Beata Jaworska-Jóźwiak

{"title":"Influence of Solids Concentration on Solid-Liquid Transportation in a Lime Production Plant","authors":"Beata Jaworska-Jóźwiak","doi":"10.37394/232011.2021.16.4","DOIUrl":"https://doi.org/10.37394/232011.2021.16.4","url":null,"abstract":"The main objective of the research is examining the influence of solids concentration on the shear stress and viscosity in fine-dispersive lime slurry collected from a flow installation existing in a selected processing plant producing lime. The analysis presented in the paper deals with slurry of average-size particles the diameter of which equals to 46μm, solid density ranges from 1140 kg/m3to 1330 kg/m3and solids concentration by volume from 10.12% to 23.70%. It has been shown that for solids concentration up to 18.28% by volume, the shear stress increases moderately with increasing concentration. If solids concentration is higher than 18.28% by volume, the shear stress increases exponentially. The determination of the boundary concentration above which the increase in shear stress is exponential is a fundamental guideline in determining the transport parameters of fine-dispersive lime slurry. The expected results of the analysis should be recommended for the transport of slurry with several times higher mass concentration and thus reducing the amount of water while increasing the economic profitability of the applied solution.","PeriodicalId":53603,"journal":{"name":"WSEAS Transactions on Applied and Theoretical Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47535032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Boundary Layer Flow Over a Vertical Cylinder Embedded in a Porous Medium Moving With Non Linear Velocity 嵌入以非线性速度运动的多孔介质中的垂直圆柱体上的边界层流动

WSEAS Transactions on Applied and Theoretical Mechanics Pub Date : 2021-02-10 DOI: 10.37394/232013.2021.16.4

T. Emam

引用次数: 3

Spring Cell Equivalence of Simplex Finite Elements – Exploration of an Iterative Approach 单纯形有限元的弹簧单元等效-迭代法的探索

WSEAS Transactions on Applied and Theoretical Mechanics Pub Date : 2021-01-28 DOI: 10.37394/232011.2020.15.25

I. Doltsinis

引用次数: 1

Simple and Efficient Methods to Perform the Optimum Matching Between a Reciprocating Piston Pump and a Wind Machine 往复式活塞泵与风机优化匹配的简便有效方法

WSEAS Transactions on Applied and Theoretical Mechanics Pub Date : 2021-01-14 DOI: 10.37394/232011.2020.15.24

Mahmoud Mohamed El-Ghobashy El-Hagar

{"title":"Simple and Efficient Methods to Perform the Optimum Matching Between a Reciprocating Piston Pump and a Wind Machine","authors":"Mahmoud Mohamed El-Ghobashy El-Hagar","doi":"10.37394/232011.2020.15.24","DOIUrl":"https://doi.org/10.37394/232011.2020.15.24","url":null,"abstract":"One of the major problems facing the use of the wind driven reciprocating lift pump is the problem of starting. The required starting torque of the pump is at least three times the average torque. This means that the pump will need a high wind velocity just to be started, after that it will continue to operate at a lower wind velocity because of the lower average torque, provided that there is enough inertia in the system. For this reason, the torque characteristics of the wind turbine – reciprocating pump combination are very important. Thus, there is a real need to develop new methods in order to reduce this starting performance of the reciprocating pump. This paper presents a theoretical study to reduce the starting torque of a non-conventional reciprocating piston pump using new methods, for example, changing the wind machine parameters, such as the aerodynamics configuration of the rotor and blade elements, or by studying the effect of wind speed velocity on the starting torque. Also by changing the cross-section area of the piston or by changing the static head of the piston pump or by controlling the flow rate of the piston pump.","PeriodicalId":53603,"journal":{"name":"WSEAS Transactions on Applied and Theoretical Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45711273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Hybrid Damage Prediction Procedure for Composite Laminates Submitted to Spectra Loading 复合材料层合板在光谱载荷作用下的混合损伤预测方法

WSEAS Transactions on Applied and Theoretical Mechanics Pub Date : 2021-01-13 DOI: 10.37394/232011.2020.15.23

Mohammed Bousfia, Mohammed Aboussaleh, B. Ouhbi

引用次数: 0

Study of Input Parameters of Layered Half-Space used for Soil Modelling 层状半空间土壤模型输入参数研究

WSEAS Transactions on Applied and Theoretical Mechanics Pub Date : 2020-12-24 DOI: 10.37394/232011.2020.15.22

R. Čajka, Z. Neuwirthová

{"title":"Study of Input Parameters of Layered Half-Space used for Soil Modelling","authors":"R. Čajka, Z. Neuwirthová","doi":"10.37394/232011.2020.15.22","DOIUrl":"https://doi.org/10.37394/232011.2020.15.22","url":null,"abstract":"This article deals with a problem of soil modeling. That is a necessary part of foundation modeling.The soil modeling can directly influent the resulting deformation of the foundations and therefore deformationof the whole building. The accurate procedure that can simulate the foundation-soil interaction is still unknown.A greater understanding of the issue through experiments and numerical modeling is important for a goodapplication and proper use in practice. To improve this understanding an experimental test of a concrete slabwas performed on special testing equipment. The experiment is complemented by numerical modeling.Numerical models are created in the Ansys software. The article features three cube models and a half-spheremodel. Deformations on all featured models are discussed and compared to the experimental values andsimplified hand calculation. The subsoil model is based on the Boussinesq half-space theory. The soil section isassumed homogeneous and layered. The size of models is assumed as a changing parameter from 10 m to 30 m.A recommended model size was evaluated from the parametric study as a match of deformation from modelsand the experiment. This computed model size is compared with an affected depth described by the standardČSN 731001. Computation was performed using supercomputer Anselm in the National SupercomputingCenter IT4Innovations in the VSB-Technical University of Ostrava.","PeriodicalId":53603,"journal":{"name":"WSEAS Transactions on Applied and Theoretical Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42531285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Impacts of Heat and Mass Flux on MHD Flow and Heat Transfer of Radiative Nanofluid Past an Exponentially Shrinking/stretching Sheet With Viscous and Ohmic Dissipations 热通量和质量通量对辐射纳米流体通过具有粘性和欧姆耗散的指数收缩/拉伸薄片的MHD流动和传热的影响

WSEAS Transactions on Applied and Theoretical Mechanics Pub Date : 2020-12-22 DOI: 10.37394/232011.2020.15.21

M. D. Kumar, M. Thiagarajan

引用次数: 0