Advances in Mechanical Engineering最新文献_第4页

Redesign of Split-Hopkinson Tensile bar to eliminate spurious wave and verification of strain signal using FEM 分离式霍普金森拉伸杆消除杂散波的再设计及应变信号的有限元验证

4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-10-01 DOI: 10.1177/16878132231199843

Yeon-Bok Kim, Jeong Kim

{"title":"Redesign of Split-Hopkinson Tensile bar to eliminate spurious wave and verification of strain signal using FEM","authors":"Yeon-Bok Kim, Jeong Kim","doi":"10.1177/16878132231199843","DOIUrl":"https://doi.org/10.1177/16878132231199843","url":null,"abstract":"To get the reliable dynamic material properties, the optimization of measuring apparatus such as SHTB (Split-Hopkinson Tensile Bar) is essential. SHTB apparatus is a machine that can acquire the material properties of a specimen for given high-speed situation in [Formula: see text] strain rate region. In this study, a new model improved the waveform is proposed by redesigning and optimizing the initial SHTB equipment. Complete reflected pulse was not obtained, and a spurious wave was measured in original model. To obtain reliable material properties, the spurious wave must be removed or avoided. Factors affecting spurious wave were determined as length of striker bar, length of incident bar, and diameter of striker bar & flange, and verified using LS-DYNA, one of the FEM (Finite-Element Method) software. The modified model was redesigned and manufactured based on FEM results. In FEM results, the incident and reflected pulse were completely improved. Also, overlapping with spurious wave was avoided in redesigned experiment results. Redesigned model was confirmed the residual wave after the incident pulse by a pneumatic launcher and various mechanical components. However, the residual wave didn’t affect the reflected pulse and the waveform was improved than the original model.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135605844","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 improved time-varying mesh stiffness calculation method and dynamic characteristic analysis for helical gears under variable torque conditions 一种改进的变扭矩条件下斜齿轮时变啮合刚度计算方法及动态特性分析

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Advances in Mechanical Engineering Pub Date : 2023-10-01 DOI: 10.1177/16878132231203132

Xiaolan Hu, Xianghuan Liu, Dejun Zhang, Bing Zhou, Yiping Shen, Yunshan Zhou

{"title":"An improved time-varying mesh stiffness calculation method and dynamic characteristic analysis for helical gears under variable torque conditions","authors":"Xiaolan Hu, Xianghuan Liu, Dejun Zhang, Bing Zhou, Yiping Shen, Yunshan Zhou","doi":"10.1177/16878132231203132","DOIUrl":"https://doi.org/10.1177/16878132231203132","url":null,"abstract":"Based on the slice theory and numerical calculation methods, the time varying meshing stiffness (TVMS) calculation method of the gear pair was constructed for the helical gear pair of a electric continuously variable transmission (ECVT), and the TVMS of the helical gear were calculated under different constant and time-varying torque in this study. The obtained stiffness values were introduced into the established dynamics model of helical gear system, and the influence of changed TVMS, resulting from the variable speed and torque, on the nonlinear dynamic characteristics of gear pair was analyzed using the Runge-Kutta method. The results show that the proposed TVMS calculation method is very effective in computing the TVMS of helical gear pair under time-varying condition. The TVMS and dynamic transmission error (DTE) increase as the torque increase, and vice versa. Meanwhile, the system exhibits a diverse range of periodic, sub-harmonic, and chaotic behaviors at high speed and at low speed when torque is low, whereas not appear at steady high torque under low speed range. This study offers a method for gaining the TVMS of helical gear pair to analyze the dynamic characteristics of gear pair under actual working condition, and the influence of torque that change with the speed ratio on the dynamic performance of a gear system should be considered in the industrial applications.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134934420","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

Virtual battery electric vehicle development via 1D tools 通过1D工具开发虚拟电池电动汽车

4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-10-01 DOI: 10.1177/16878132231177663

Emre Altuğ, Ömer Faruk Akyünci, Emre Özgül

{"title":"Virtual battery electric vehicle development via 1D tools","authors":"Emre Altuğ, Ömer Faruk Akyünci, Emre Özgül","doi":"10.1177/16878132231177663","DOIUrl":"https://doi.org/10.1177/16878132231177663","url":null,"abstract":"Actual testing and prototyping costs make up a significant portion of engineering budgets. Virtual demonstration mainly relies on fast and accurate models with robust performance prediction capability as a cost-effective solution. In this manuscript, GT-Suite, a one-dimensional simulation tool is preferred for developing an isothermal battery model. The developed battery model is implemented to a Light Commercial Vehicle model to run Worldwide Harmonized Light Vehicles Test Cycle. The critical outputs such as state of charge, energy depletion, heat rejection, and generated power are reported. Histograms such as pack current, charge, and discharge current with respect to its nominal capacity (C-rate) are also created to examine the operation capability of battery. In the results, it is seen that the state of charge diminishes from 90% to 82%, as an expected behavior. It is also found that the Parallel Sparse Direct and Multi-Recursive Iterative Linear Solvers methodology reduces the simulation duration by approximately 100 times, in comparison with Singular Value Decomposition Electrical Inversion Scheme. The runtime of the battery pack modeled with the cellular approach combined with the SVD method is more than 90 h. However, the runtime drops to 0.75 h when the PARDISO technique is applied. The method developed within this study can be used for rapid and accurate development of batteries. The verification can be completed in virtual environment and a vital reduction in engineering/prototype/test costs can be guaranteed. The innovation the developed methodology propose is ensuring a fast and reliable performance assessment via taking the holistic effect of integrated models into consideration. Hence it is possible for original equipment manufacturer to completely or gradually eliminate the actual tests and hence prototype costs, test system, and engineer allocations.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135921855","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

Simulation and optimization of square fin concentric tube heat storage exchanger 方翅片同心管蓄热换热器的仿真与优化

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Advances in Mechanical Engineering Pub Date : 2023-10-01 DOI: 10.1177/16878132231205835

Changhai Yang, Sile Jiang, Guoshan Yang, Zhuxiu Wang, Zhengying Liu, Yan Li, Qunzhi Zhu

{"title":"Simulation and optimization of square fin concentric tube heat storage exchanger","authors":"Changhai Yang, Sile Jiang, Guoshan Yang, Zhuxiu Wang, Zhengying Liu, Yan Li, Qunzhi Zhu","doi":"10.1177/16878132231205835","DOIUrl":"https://doi.org/10.1177/16878132231205835","url":null,"abstract":"The square fin was used to improve the heat transfer rate of the concentric tube phase change heat exchanger. The effects of fin spacing, fin arrangement, and fin length on the melting process of phase change material (PCM) were studied. The influence and mechanism of non-uniform fin arrangement were discussed in detail. The liquid phase distribution and temperature distribution of PCM with time were analyzed. The results indicated that the heat exchanger with square fins can significantly improve the heat storage rate and shortened the complete melting time of PCM. Compared with heat exchangers without fins, the melting time of PCM in a 40 mm equidistant fin heat exchanger was shortened by 15.85%, and that in a 70 mm, non-uniformly spaced fin heat exchanger was shortened by 36.79%. Due to the different distances between the square fins and the outer boundary of the concentric tube, the temperature distribution near the square fin showed anisotropy, which enhanced the melting rate of PCM. The sensitivity order was fin arrangement > fin length > fin spacing. The research results can provide a reference for the design of phase change heat exchangers.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135656873","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

Adaptive design of bus chassis using a design structure matrix to facilitate integration of new power sources 采用设计结构矩阵对母线底盘进行自适应设计，便于新电源的集成

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Advances in Mechanical Engineering Pub Date : 2023-10-01 DOI: 10.1177/16878132231200330

Qian Peng, Xiangchao Meng, Sheng Liu, Fenggang Han, Mark Robinson

引用次数: 0

Case study: Repowering of ORC system by means of experimental test bench with supercritical carbon dioxide, proposal, and field experience improvements 案例研究:利用超临界二氧化碳的实验试验台对ORC系统进行重新供电，建议和现场经验改进

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Advances in Mechanical Engineering Pub Date : 2023-10-01 DOI: 10.1177/16878132231163683

Pedro Domínguez, Rodrigo Alarcón, Héctor Aviña, Oscar de Santiago

{"title":"Case study: Repowering of ORC system by means of experimental test bench with supercritical carbon dioxide, proposal, and field experience improvements","authors":"Pedro Domínguez, Rodrigo Alarcón, Héctor Aviña, Oscar de Santiago","doi":"10.1177/16878132231163683","DOIUrl":"https://doi.org/10.1177/16878132231163683","url":null,"abstract":"Although organic Rankine cycles (ORCs) have cornered the small-scale energy harvesting market, the generation capacities produced by sCO 2 cycles far exceed those of ORCs, reaching higher powers and efficiencies. This paper analyzes the results of the field tests performed in 2022 at the Grupo Dragón, Nayarit, Mexico, facilities, in which the objective was to validate the operation of the ORC IDEA-10 system with a capacity of up to 10 kWe. The thermodynamic states reached during the test time lapses in which there was full operational stability and with direct loads are analyzed. The results obtained together with proposals for improvement led to compare the performance of ORCs with sCO 2 systems for low temperature geothermal sources. The efficiencies of simple sCO 2 cycles (5.32%) turned out to be lower than that of ORC at the same temperatures (9.7%), however, the efficiency of the sCO 2 cycle improved notably in a regenerative configuration, given the properties of CO 2 near its critical point, reaching efficiencies above 25% even at low temperatures compared to conventional ORCs with efficiencies below 10%. Finally, the basis for the implementation of sCO 2 in low enthalpy geothermal applications was established, designing an experimental circuit with results obtained in the literature.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134934516","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

On generalized Bödewadt flow of TiO₂/water nanofluid over a permeable surface with temperature jump 具有温度跳变的可渗透表面上TiO2/水纳米流体的广义Bödewadt流动

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Advances in Mechanical Engineering Pub Date : 2023-10-01 DOI: 10.1177/16878132231201299

Zaheer Abbas, Shahana Siddique, Muhammad Yousuf Rafiq, Aqeel U Rehman

{"title":"On generalized Bödewadt flow of TiO<sub>2</sub>/water nanofluid over a permeable surface with temperature jump","authors":"Zaheer Abbas, Shahana Siddique, Muhammad Yousuf Rafiq, Aqeel U Rehman","doi":"10.1177/16878132231201299","DOIUrl":"https://doi.org/10.1177/16878132231201299","url":null,"abstract":"Titanium dioxide (TiO 2 ) nanomaterial has numerous applications in the fields of cosmetics, medicines, coatings, inks, plastics, food, and textiles. Therefore, the problem of heat and mass transport on Bödewadt flow of TiO 2 /water nanofluid over a rotating disk subjected to wall suction is studied. The impact of chemical reaction with partial slip and temperature jump conditions are also considered. For the numerical solution to the problem, the similarity variables are added to transform the three-dimensional flow equations into a favorable set of ordinary differential equations. The impacts of shear stresses, rates of heat and mass transport, and cooling efficiency of nanofluid on the flow are investigated by employing a bvp4c routine in Matlab software. Additionally, the plots for two-dimensional streamlines are presented to visualize the impact of slip velocity and rotation. Through asymptotic analysis, it is found that the presence of similarity solutions for nanofluid over the disk can occur only if the disk is driven to a significant amount of suction. The skin friction factor grows by enhancing the nanoparticle volume fraction [Formula: see text] with a slight reduction in heat and mass transport rates. The fluid temperature is reduced by augmenting [Formula: see text] providing the cooling efficiency of TiO 2 . The fluid concentration falls significantly when a chemical reaction occurs at a faster rate.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134933715","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

Enhancement of convective flow in ternary hybrid nanofluid induced by metachronal propulsion 异向推进对三元混合纳米流体对流增强的影响

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Advances in Mechanical Engineering Pub Date : 2023-10-01 DOI: 10.1177/16878132231205351

Zaheer Abbas, Muhammad Shakib Arslan, Muhammad Yousuf Rafiq

引用次数: 0

Experimental investigation on mechanical properties of novel polymer hybrid composite with reinforcement of banana fiber and sugarcane bagasse powder 新型香蕉纤维与蔗渣粉增强聚合物杂化复合材料力学性能的试验研究

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Advances in Mechanical Engineering Pub Date : 2023-10-01 DOI: 10.1177/16878132231203810

Mahadev Madgule, Padmakar Deshmukh, Kahkashan Perveen, Mohd Obaid Qamar, Abdul Razak, Anteneh Wogasso Wodajo

{"title":"Experimental investigation on mechanical properties of novel polymer hybrid composite with reinforcement of banana fiber and sugarcane bagasse powder","authors":"Mahadev Madgule, Padmakar Deshmukh, Kahkashan Perveen, Mohd Obaid Qamar, Abdul Razak, Anteneh Wogasso Wodajo","doi":"10.1177/16878132231203810","DOIUrl":"https://doi.org/10.1177/16878132231203810","url":null,"abstract":"Natural fibers such as Banana fiber and sugarcane bagasse powder are used in the present study, which are abundantly available at low cost. Novel hybrid natural fiber reinforced composite specimen prepared by using the matrix material as epoxy (70%) with the addition of hardener and the reinforcement material (30%) used as NaOH chemical treated banana fiber with the addition of filler material as sugarcane bagasse powder to enhance the property. To prepare the composite material hand-lay process is used and manufactured three different combination of specimen by varying the composition ration of 10%, 15%, and 20% of reinforced material. The mechanical properties such as tensile, compression, flexural, Impact test of the prepared specimen have been evaluated as per the ASTM standards. The mechanical properties results depicts that the specimen prepared with chemically treated fiber gives more strength as compared to untreated fiber composites. The morphological study evidences the proper fiber used while preparing the hybrid composite material. The maximum tensile strength achieved in specimen is 73.48 MPa, compressive strength of 99.63 MPa, flexural strength of 77.50 MPa, Impact strength of 4.8 J/mm, Vickers hardness value of 59.6. The specimen prepared with chemically treated specimen has a higher percentage of water absorption than the untreated. This novel hybrid composite material can be used in automobile, aircraft, building, sports, and household applications.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135605961","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

Significance of Koo-Kleinstreuer-Li model for thermal enhancement in nanofluid under magnetic field and thermal radiation factors using LSM ku - kleinstreuer - li模型对纳米流体在磁场和热辐射因素下热增强的意义

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Advances in Mechanical Engineering Pub Date : 2023-10-01 DOI: 10.1177/16878132231206906

None Adnan, Aneesa Nadeem, Haitham A Mahmoud, Aatif Ali, Sayed M Eldin

{"title":"Significance of Koo-Kleinstreuer-Li model for thermal enhancement in nanofluid under magnetic field and thermal radiation factors using LSM","authors":"None Adnan, Aneesa Nadeem, Haitham A Mahmoud, Aatif Ali, Sayed M Eldin","doi":"10.1177/16878132231206906","DOIUrl":"https://doi.org/10.1177/16878132231206906","url":null,"abstract":"Investigation of thermal transport in nanofluid flow squeezed inside a channel formed by two sheets with zero slope is common in industrial and engineering applications. The heat transmission could be affected by various physical constraints which reduce the machine efficiency for desired products. Therefore, this attempt clearly focus on the development of new nanofluid thermal transport model using the significance effects of Koo-Kleinstreuer-Li correlation which used for the estimation of nanofluid thermal conductivity, impacts of magnetic field, internal heating species, and thermal radiations. Then, the LSM (Least Square Method) is magnificently implemented and obtained the physical results for multiple ranges of parameters. It is noticed that when the squeezed parameter varied in the ranges of [Formula: see text] to [Formula: see text] and [Formula: see text] to [Formula: see text], the fluid loss their velocity and more reduction is occurred about [Formula: see text]. However, outward movement of the plate lead to quick declines in the velocity. Further, when the Hartmann number increased for [Formula: see text]–[Formula: see text] then the fluid moves slowly and stronger magnetic field resists its motion. Moreover, the Eckert and Radiation numbers boosted the fluid temperature by keeping the feasible nanoparticles concentration in the range of [Formula: see text]–[Formula: see text].","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136010292","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