International Journal of Mechanics最新文献_第2页

Development of Methods and Computational Algorithms Parallelepiped in the Presence of Temperature and Heat Exchange 温度和热交换条件下并行六面体方法和计算算法的发展

International Journal of Mechanics Pub Date : 2023-07-10 DOI: 10.46300/9104.2023.17.9

Kazykhan Rysgul, Tashev Azat, Aitbayeva Rakhatay, Kudaykulov Anarbay, Kunelbayev Murat, M. Arshidinova, Zhunusova Aliya, Kazangapova Bayan

{"title":"Development of Methods and Computational Algorithms Parallelepiped in the Presence of Temperature and Heat Exchange","authors":"Kazykhan Rysgul, Tashev Azat, Aitbayeva Rakhatay, Kudaykulov Anarbay, Kunelbayev Murat, M. Arshidinova, Zhunusova Aliya, Kazangapova Bayan","doi":"10.46300/9104.2023.17.9","DOIUrl":"https://doi.org/10.46300/9104.2023.17.9","url":null,"abstract":"The article describes computational algorithms for estimating the law of distribution of body temperature in the form of a rectangular parallelepiped. The case is studied when a conditioned temperature is maintained on one of the boundaries of a rectangular parallelepiped, and heat exchange with the environment occurs on the opposite side. In addition, there are cases when other faces of the parallelepiped are thermally insulated or are under the influence of the environment. A polynomial is chosen as the approximating function. In accordance with the proposed layout, a function is formed that considers temperature, heat exchange with the environment, and insulation of the faces of a rectangular parallelepiped. The temperatures at the nodal points are determined by minimizing the function. Further, the temperature distribution law is determined according to the proposed approximating polynomial. The estimation of temperature distribution law is calculated for different amounts of partitioning into elements of a rectangular parallelepiped.","PeriodicalId":39203,"journal":{"name":"International Journal of Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42952590","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

Road Traffic Noise Predictions by means of L10 Modelling with a Multilinear Regression Calibrated on Simulated Data 基于L10模型的道路交通噪声预测和基于模拟数据的多线性回归

International Journal of Mechanics Pub Date : 2023-06-27 DOI: 10.46300/9104.2023.17.8

Domenico Rossi, A. Mascolo, C. Guarnaccia

引用次数: 0

Experimental Models of the Lateritic Minerals Drying Kinetics at High Temperatures 红土矿物高温干燥动力学实验模型

International Journal of Mechanics Pub Date : 2023-05-12 DOI: 10.46300/9104.2023.17.7

Torres Tamayo Enrique, Zalazar Carlos, Morales-Álvarez José, Carrión Daniel, Iza Edison, Reinoso Edgar, Góngora Ever

引用次数: 0

Optimization Model of the Shell Capsules Geometry for a System for Diagnosing Damage to Gas Turbine Blades in Non-stationary 非定常状态下燃气轮机叶片损伤诊断系统的外壳几何形状优化模型

International Journal of Mechanics Pub Date : 2023-03-30 DOI: 10.46300/9104.2023.17.6

I. Andrianov, Elena K. Chepurnova

{"title":"Optimization Model of the Shell Capsules Geometry for a System for Diagnosing Damage to Gas Turbine Blades in Non-stationary","authors":"I. Andrianov, Elena K. Chepurnova","doi":"10.46300/9104.2023.17.6","DOIUrl":"https://doi.org/10.46300/9104.2023.17.6","url":null,"abstract":"Scientific research is devoted to the problem of diagnosing damage in the blades of gas turbine engines in non-stationary conditions. The paper proposes a model for a more accurate calculation of the parameters of the crack detection system using a system of capsules, inside of which, under the influence of pressure, there is a substance exhibiting ionizing properties. In the study, the relations for determining the uneven pressure due to the action of centrifugal tensile forces during the rotation of the turbine blade are obtained. The relations for calculating the minimum required diameter of the capsule to ensure the rupture of the capsule when cracks are opened for the effective operation of the crack detection system are obtained. Calculations of the pressure inside the capsule and the geometry of the capsule at different speeds of rotation of the turbine blade are carried out. An estimate of the error in calculating the pressure inside the capsule is given in the case of not taking into account the action of centrifugal forces. The obtained dependences will significantly optimize the system for detecting damage to turbine blades, and increase the efficiency and safety of the operation of gas turbine engines.","PeriodicalId":39203,"journal":{"name":"International Journal of Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47789917","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

Designing of Aircraft Reinforced Carbon- Composite Torsion Boxes 飞机增强碳复合材料扭转箱的设计

International Journal of Mechanics Pub Date : 2023-03-13 DOI: 10.46300/9104.2023.17.4

A. Bolshikh

引用次数: 0

Optimization of Foam Filled Door Sill for Pure Electric Vehicle 纯电动汽车泡沫填充门框优化设计

International Journal of Mechanics Pub Date : 2023-03-13 DOI: 10.46300/9104.2023.17.5

F. Djamaluddin

引用次数: 0

Design and Test of a New Type of Coupling Weeder 一种新型耦合除草机的设计与试验

International Journal of Mechanics Pub Date : 2023-03-13 DOI: 10.46300/9104.2023.17.3

Peng Guan, Jianqi Yang

{"title":"Design and Test of a New Type of Coupling Weeder","authors":"Peng Guan, Jianqi Yang","doi":"10.46300/9104.2023.17.3","DOIUrl":"https://doi.org/10.46300/9104.2023.17.3","url":null,"abstract":"In order to improve the efficiency of mechanical weeding and reduce the injury rate caused by work. This paper improves the shortage of traditional weeding machinery, and designs a new combined mechanical weeding device by optimizing the internal structure and increasing the operation function. In this device, the structure of the cutter tooth is optimized and the operation function is added. Secondly, the effect of the weeding is further enhanced by increasing the flame nozzle. Finally, the finite element analysis of the blade and the nozzle is carried out by CFD and COMSOL software, and the rationality of the improvement is explained. The field weeding test showed that the average weeding rate of the machine was 86% and the rate of injured seedlings was 3.5% under the conditions of different advancing speed (0.5, 1, 1.5m/s) and the soil depth of the weeding wheel (3, 6, and 9cm). According to the speed and width of the machine, the efficiency of the machine is 0.7~2hm2/h. The collection performance and operation efficiency meet the technical requirements of weeding operation in dry field machinery. Through the comparison test of mechanical weeding, heat weeding and the effect of combined mechanical weeding, the efficiency of combined mechanical weeding in the test area is higher than that of other weeding methods. This study can provide a reference for the effect of weeds treatment on the dry field weeding machine.","PeriodicalId":39203,"journal":{"name":"International Journal of Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43394880","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

CFD Investigation of the Soldering Process for a Small Spherical PCM Made of Lead-tin Alloy 铅锡合金小型球形PCM焊接过程的CFD研究

International Journal of Mechanics Pub Date : 2023-03-03 DOI: 10.46300/9104.2023.17.1

M. S. Abood, Ammar Ghany

{"title":"CFD Investigation of the Soldering Process for a Small Spherical PCM Made of Lead-tin Alloy","authors":"M. S. Abood, Ammar Ghany","doi":"10.46300/9104.2023.17.1","DOIUrl":"https://doi.org/10.46300/9104.2023.17.1","url":null,"abstract":"Unlike welding, soldering does not involve melting the work pieces. Soldering is a process in which two or more items are joined together by melting and putting a filler metal (solder) into the joint. Failure in the solder joint may make the system components lose their functions. Electrical wiring and electronic components are joined to devices and printed circuit boards using soldering. Soldering and brazing are both used in the assembly of musical instruments. Lead-tin alloy solder employed in the current investigation which has a diameter of 4 mm and a density of 11.0103 kg/m3 with continuous heat flux heating from the domain's left side and complete insulation on the other side. The melting of PCM was simulated using the ANSYS (Fluent) melting model. Three procedures were followed during the heating stage of the reflow process to perform the melting heat-transfer analysis. The simulation's results were recorded at regular intervals of 15 seconds. The results show melting rate increases as time proceeds. It is almost the same at the initial stages and increases in the middle and the end of the melting process. Heat transfer happens mostly through conduction during the first 0–30 seconds of the melting process, changing to natural convection as the material continues to heat up.","PeriodicalId":39203,"journal":{"name":"International Journal of Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46613731","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

Kinematic Analysis of Constrained General Planner Mechanisms Using MATLAB Graphical User Interface (GUI) 基于MATLAB图形用户界面（GUI）的约束通用规划机构运动学分析

International Journal of Mechanics Pub Date : 2023-03-03 DOI: 10.46300/9104.2023.17.2

M. William, M. Hegaze, M. El-Sebah, Y. Elshaer

引用次数: 0

Design and Simulation of Safe Truck-Cargo Matching System for Rollover Prevention 防侧翻安全车货匹配系统的设计与仿真

International Journal of Mechanics Pub Date : 2022-12-22 DOI: 10.46300/9104.2022.16.16

Seongjin Oh, J. Jeong

引用次数: 0