International Journal for Engineering Modelling最新文献_第3页

A Modified Approach to the Mathematical Model of Crack with Pre-destruction Zones 具有预破坏区的裂纹数学模型的一种改进方法

International Journal for Engineering Modelling Pub Date : 2022-12-21 DOI: 10.31534/engmod.2023.1.ri.01v

Mykola Stashchuk, P. Pukach, M. Vovk, Karpenko Physico-Mechanical

引用次数: 0

Mathematical Model for the Simulation of Contact-Induced Standing Waves in Tyres by a Rotating Ring Based on Experiment 基于实验的轮胎环接触驻波仿真数学模型

International Journal for Engineering Modelling Pub Date : 2022-11-28 DOI: 10.31534/engmod.2022.2.ri.06m

I. Senjanovi, Damjan, Akmak, Neven Alujevi, N. Vladimir, Ivan, atipovi

{"title":"Mathematical Model for the Simulation of Contact-Induced Standing Waves in Tyres by a Rotating Ring Based on Experiment","authors":"I. Senjanovi, Damjan, Akmak, Neven Alujevi, N. Vladimir, Ivan, atipovi","doi":"10.31534/engmod.2022.2.ri.06m","DOIUrl":"https://doi.org/10.31534/engmod.2022.2.ri.06m","url":null,"abstract":"SUMMARY A physics-based mathematical model for the simulation of contact-induced standing waves in rotating tyres is presented. A toroidal balloon mounted on a hub, in contact with a rigid flywheel, is considered. The distance between the hub and the flywheel shafts is kept constant during rotation. The balloon is modelled as a membrane structure, i.e. as a ring on elastic support without flexural stiffness. The differential equations of motion for the ring radial and circumferential displacements are formulated according to the cylindrical shell theory. It is found that the critical rotation speed is a transition parameter from a stable to unstable state, whereas the standing waves denote ring post-buckling behaviour. Boundary conditions at the ring and flywheel contact edges are specified so as to ensure the continuity of ring deformation. The internal load due to the penetration of the flywheel into the expanded ring, as well as the reaction forces in shaft bearings, are determined. The influence of the circumferential displacement on ring response is also analysed. The analytical procedure is verified by comparing the numerical and the available experimental results. In spite of a rather simple balloon model, a good qualitative agreement between the two sets of results is obtained.","PeriodicalId":35748,"journal":{"name":"International Journal for Engineering Modelling","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46386068","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: 0

Vehicle Dynamics, Lateral Forces, Roll Angle, Tire Wear and Road Profile States Estimation - A Review 车辆动力学，横向力，侧倾角，轮胎磨损和道路轮廓状态估计-综述

International Journal for Engineering Modelling Pub Date : 2022-10-27 DOI: 10.31534/engmod.2022.2.ri.05b

Riton Kumer Das, M. A. Hossain, Md. Tazul Islam, Sajal Chandra, Banik

引用次数: 0

Use of the AHP Method to Evaluate Key Inventory Control Indicators: Case Study of a Taiwanese Manufacturer in China 运用层次分析法评估关键库存控制指标:以台湾制造企业为例

International Journal for Engineering Modelling Pub Date : 2022-10-05 DOI: 10.31534/engmod.2022.2.ri.04v

Yao Lin Ong, Cathay Kuo-Tai Kang, J. Ding

引用次数: 0

Unconstrained Dynamic Simulation on Offshore Dual Derrick 海上双井架无约束动力学仿真

International Journal for Engineering Modelling Pub Date : 2022-07-01 DOI: 10.31534/engmod.2022.2.ri.03a

Alaa Dandash, Wensheng Xiao, Hualin Liao

{"title":"Unconstrained Dynamic Simulation on Offshore Dual Derrick","authors":"Alaa Dandash, Wensheng Xiao, Hualin Liao","doi":"10.31534/engmod.2022.2.ri.03a","DOIUrl":"https://doi.org/10.31534/engmod.2022.2.ri.03a","url":null,"abstract":"SUMMARY With the increase in demand for oil and oil products, the petroleum industry is faced with the requirement for more complex tools to increase production at lower prices. The complexity of drilling tools is manifested in the complex geometry, fabrication, assembly, deformations, stresses and loads acting on them. This study introduces a dual derrick simulation procedure in a marine environment which provides a step towards a better understanding by giving a simulation close to the real state. The derrick was considered in equilibrium, and then the derrick vibration was simulated using field data in order to obtain stress distribution. This implies that the derrick can move freely and cause deformations in all directions without constraints. In this paper, the finite element method was employed to simulate the derrick in a static state and in motion, and then the obtained stress distribution was compared for both cases. A literature review on the analysis of environment working conditions is provided. The results showed that the vibration of the platform increased the stress considerably. The maximum combined stress increased by 27 %, while the maximum bending stress increased by 40 % and reached considerably higher values in the beams connected to the top of the derrick.","PeriodicalId":35748,"journal":{"name":"International Journal for Engineering Modelling","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46301213","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: 0

Multi-model Fusion Attention Network for News Text Classification 用于新闻文本分类的多模型融合注意力网络

International Journal for Engineering Modelling Pub Date : 2022-05-05 DOI: 10.31534/engmod.2022.2.ri.01d

引用次数: 0

A Study on Cylindrical Coil Spring Deflection and Stress Done Using Analytical and Numerical Methods 用解析和数值方法研究圆柱螺旋弹簧的挠度和应力

International Journal for Engineering Modelling Pub Date : 2022-04-08 DOI: 10.31534/engmod.2022.1.ri.04m

D. Čakmak, Z. Tomičević, I. Senjanović, H. Wolf, Ž. Božić, D. Semenski

{"title":"A Study on Cylindrical Coil Spring Deflection and Stress Done Using Analytical and Numerical Methods","authors":"D. Čakmak, Z. Tomičević, I. Senjanović, H. Wolf, Ž. Božić, D. Semenski","doi":"10.31534/engmod.2022.1.ri.04m","DOIUrl":"https://doi.org/10.31534/engmod.2022.1.ri.04m","url":null,"abstract":"SUMMARY In this study, a linear cylindrical coil spring under axial quasi-static point load is considered. Two types of coil springs with a circular cross-section, i.e. straight and inclined, are clearly distinguished and analysed. The straight cross-section implies parallelism with respect to the vertical axis of the spring. The inclined cross-section considers the perpendicularity with respect to the tangent of the spring helix curve. Several new closed-form spring deflection and stress correction factors are proposed which constitutes the main contribution of this manuscript. The obtained results are based on the basic theory of strength of materials, the theory of elasticity, and linear finite element analysis. The novel correction factors prove to be very accurate compared to the parametric numerical analyses performed and the results obtained from the literature. The accuracy of the proposed corrections is especially evident when considering very large pitch angles in combination with small spring indices, i.e. thick and steep coil springs. The direct engineering applicability of the obtained results is highlighted.","PeriodicalId":35748,"journal":{"name":"International Journal for Engineering Modelling","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43381912","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

Modelling of Heat Transfer Characteristics around a Cylindrical-Barrier 围绕圆柱形屏障的传热特性建模

International Journal for Engineering Modelling Pub Date : 2022-04-08 DOI: 10.31534/engmod.2022.ri.05b

引用次数: 4

Box-Girder Bridges - Modelling and Analysis 箱梁桥-建模与分析

International Journal for Engineering Modelling Pub Date : 2022-02-10 DOI: 10.31534/engmod.2022.1.ri.02m

Preeti Agarwal, Pradeep Priyaranjan Pal, Kumar Mehta

{"title":"Box-Girder Bridges - Modelling and Analysis","authors":"Preeti Agarwal, Pradeep Priyaranjan Pal, Kumar Mehta","doi":"10.31534/engmod.2022.1.ri.02m","DOIUrl":"https://doi.org/10.31534/engmod.2022.1.ri.02m","url":null,"abstract":"SUMMARY The box-girder bridge has become very popular lately due to its serviceability, stability, and structural efficiency. The study of such a bridge requires analytical, experimental, or numerical methods. The structural behavior of the box-girder bridge is very complex and is quite cumbersome to be investigated by conventional methods. This paper presents a modelling process for the analysis of simply supported reinforced concrete (RC) box-girder bridges (straight, skew, curve, and skew-curved) using the finite element method under Indian loading conditions. This modelling process is developed on the basis of the Codal provisions of Indian Road Congress (IRC) 6:2017 and IRC 21:2000, and its implementation is quite simple as it avoids the cumbersome calculations and requires less time. Different values of the span, span-depth ratio, and the number of cells are considered to suit the requirements, and limiting criteria for stresses and deflection are checked. The static and free vibration analyses are carried out, and the results are compared to control the applicability of the proposed modelling process. The present modelling process is applied to analyse the RC box-girder bridges up to 50 m spans, and no erection procedure is included. However, one may follow the proposed modelling procedure for any box-girder bridge for its analysis.","PeriodicalId":35748,"journal":{"name":"International Journal for Engineering Modelling","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41698471","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: 3

Aerodynamic simulation of plunging airfoil with heat effects and Lattice Boltzmann technique 考虑热效应和晶格玻尔兹曼技术的俯冲翼型气动仿真

International Journal for Engineering Modelling Pub Date : 2022-02-03 DOI: 10.31534/engmod.2022.1.ri.01v

Hamed Saffarzadeh, M. H. Djavareshkian

{"title":"Aerodynamic simulation of plunging airfoil with heat effects and Lattice Boltzmann technique","authors":"Hamed Saffarzadeh, M. H. Djavareshkian","doi":"10.31534/engmod.2022.1.ri.01v","DOIUrl":"https://doi.org/10.31534/engmod.2022.1.ri.01v","url":null,"abstract":"In this investigation, finite difference lattice Boltzmann method (FD_LBM) is developed to solve heat transfer effect behavior on the symmetrical and unsymmetrical airfoils with plunge oscillations. In this simulation, the equations of motion and energy are executed using LBM and FD simultaneously. The LB method is integrated with ghost flow for predicted curve boundary. The ghost flow method is a Cartesian-based method that, in addition to being practical and straightforward, retains many advantageous features of structured meshes, can be used for complex geometries, and has a high degree of flexibility. In other words, when the body oscillates, it is important to determine its position caused by the change in the mesh structure at any time. While the ghost method detects the object's position well, the new technique can capture the details of flow more accurately and stably than the other methods. Combining the ghost method with LBM provides a new technique that can investigate thermal behavior's effect on the airfoil with greater accuracy and stability. This combination of modern methods with high accuracy and stability in complex geometries has not been studied. The results are compared with the literature and show that this method has better convergence in different Reynolds and temperatures with changes at boundary conditions in the airfoil.","PeriodicalId":35748,"journal":{"name":"International Journal for Engineering Modelling","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48339845","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: 0