Advances in Mechanical Engineering最新文献_第9页

A method to remanufacture large-size spiral bevel gear with ease-off topology modification by face-milled generator 一种利用面铣削铣床对大尺寸螺旋锥齿轮进行缓动拓扑修饰的再制造方法

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231194322

Longlong Geng, S. Nie, Bo Zhao, Chuang Jiang

{"title":"A method to remanufacture large-size spiral bevel gear with ease-off topology modification by face-milled generator","authors":"Longlong Geng, S. Nie, Bo Zhao, Chuang Jiang","doi":"10.1177/16878132231194322","DOIUrl":"https://doi.org/10.1177/16878132231194322","url":null,"abstract":"Spiral bevel gears are manufactured and used in pairs. When one part usually pinion fatigued, the pair will be replaced. It inevitably leads to a waste of resources and time. To solve this phenomenon, a method to remanufacture pinion with ease-off topology modification is proposed. First, the wheel and pinion were measured to fitting tooth surface, and then a conjugate surface of wheel fitting tooth surface was derived. Secondly, an ease-off topology surface was superimposed to the conjugate surface to improve mesh performance, and then a design tooth surface was obtained. Thirdly, a mathematical model to process pinion was established and original machine-tool settings parameters of pinion were calculated. The deviations between design and original tooth surface of pinion were count, and an error correction model of tooth surface was established to adjust machine-tool settings parameters. Finally, an experimental verification was conducted. The pinion was remanufactured by a face-milled generator and the mesh performance was consistent with design. The result demonstrates the method proposed is effectiveness and feasible. It provides reference for the remanufacture of large-size spiral bevel gears and has good value for engineering application.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42313735","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

Design and analysis of thermal protection and load-bearing integrated structure of the telescopic wing 伸缩翼热防护与承载一体化结构的设计与分析

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231193865

Hong Xiao, Hongwei Guo, Chunfeng Li, Dongdong Xie, Chunlei Xie, Rongqiang Liu

{"title":"Design and analysis of thermal protection and load-bearing integrated structure of the telescopic wing","authors":"Hong Xiao, Hongwei Guo, Chunfeng Li, Dongdong Xie, Chunlei Xie, Rongqiang Liu","doi":"10.1177/16878132231193865","DOIUrl":"https://doi.org/10.1177/16878132231193865","url":null,"abstract":"A novel three-layer integrated structure was designed to meet the thermal-insulation and load-bearing requirements of high-speed telescopic wing aircraft. The structure consists of heat shield layer, load-bearing skeleton, and pyramid lattice structure filled with aerogel to achieve the insulation function. Sensitivity analysis of the design parameters and optimal design of the integrated structure was carried out, and the structure was optimized by using response surface method. Compared to the initial structure, the optimized structure has an equivalent thermal conductivity of 0.0276, reduced by 40%, and a relative density of 685 . 5 kg / m 3 , reduced by 3.7%. And it has a thermal conductivity that is over 20% lower than that of ceramic insulating tiles. Then, the integrated structure was regarded as a homogeneous plate, and the equivalent mechanical and thermal parameters were determined and verified by simulation and experimental results. The equivalence error was controlled within 10%. Finally, a simulation model of the telescopic wing was established. The result shows that the maximum deformation under 20 kPa surface pressure is 3.96 mm. The temperature resistance of the structure surface is up to 1500°C, and the wing internal temperature is controlled within 200°C after 1200 s of thermal loading. The results verified that the integrated structure meets the requirement of a high-speed telescopic wing.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49378027","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

Using a spherical inverted pendulum and statokinesigram for modeling and evaluating quiet standing posture 利用球面倒立摆和静立图对静立姿势进行建模和评价

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231190993

Hussam K Abdul-Ameer

{"title":"Using a spherical inverted pendulum and statokinesigram for modeling and evaluating quiet standing posture","authors":"Hussam K Abdul-Ameer","doi":"10.1177/16878132231190993","DOIUrl":"https://doi.org/10.1177/16878132231190993","url":null,"abstract":"This paper proposes a new approach to model and analyze erect posture, based on a spherical inverted pendulum which is used to mimic the body posture. The pendulum oscillates in two directions, θ and ϕ , from which the mathematical model was derived and two torque components in oscillation directions were introduced. They are estimated using stabilometric data acquired by a foot pressure mapping system. The model was quantitatively investigated using data from 19 participants, who were first were classified into three groups, according to the foot arch-index. Stabilometric data were then collected and fed into the model to estimate the torque’s components. The components were statistically processed, and the results revealed that the components in direction θ are able to reject intrinsic perturbation. The frequency spectrum of the components in direction ϕ was processed using fast Fourier transform, and the results showed the feasibility of the component in segregating foot deformities. In addition, high-arched foot cases tended to be more stable than other cases because the exerted torque is less. The torque profiles estimated by our model were compared with the profiles derived from a classical inverted pendulum. In most cases, our results showed a significant change (t-test p < 0.05).","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43357758","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

Chemically reactive MHD fluid flow along with thermophoresis and Brownian effects 化学反应MHD流体流动与热泳和布朗效应

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231193326

Saquib Ul Zaman, Muhammad Nauman Aslam, A. Hussain

{"title":"Chemically reactive MHD fluid flow along with thermophoresis and Brownian effects","authors":"Saquib Ul Zaman, Muhammad Nauman Aslam, A. Hussain","doi":"10.1177/16878132231193326","DOIUrl":"https://doi.org/10.1177/16878132231193326","url":null,"abstract":"In the current manuscript, the aim of the study is to analyze the Eyring-Powell nanofluid flow under the influence of chemical reaction and radiation effects in a slender cylinder in the presence of a non-linear heat source/sink. The flow of Eyring-Powell nanofluid through a slender cylinder along with chemical reaction and MHD effect is not studied yet. Which is the novelty of current research work. Flow analysis is taken near the stagnation point. MHD effect is considered for controlling turbulence. Rosseland model is applied for the estimation of heat flux. The governing system of PDE’S is converted into highly nonlinear ODE’S by utilizing suitable similarity transformations along with the boundary conditions. The resulting coupled systems of nonlinear ordinary differential equations (ODE), accompanied by boundary conditions, are solved using the powerful bvp4c method in MATLAB software. The physical significance of evolved parameters is investigated by graphs and tables. Nusselt number and skin friction are analyzed for several parameters. It is observed that the increase in the MHD effect rises the velocity but lessens the temperature profile and the concentration of the fluid declines when the chemical reaction parameter is incremented. The specific application of the study is that the Eyring-Powell is used in a variety of industrial applications, including lubrication, plastics processing, and oil drilling.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44243772","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

Multi-objective robust optimization of foam-filled double-hexagonal crash box using Taguchi-grey relational analysis 基于田口灰关联分析的泡沫填充双六边形碰撞箱多目标鲁棒优化

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231189070

Feng Xiong, Zhanfei Wang, D. Wang, L. Ji, Hang Wu, Xihong Zou

{"title":"Multi-objective robust optimization of foam-filled double-hexagonal crash box using Taguchi-grey relational analysis","authors":"Feng Xiong, Zhanfei Wang, D. Wang, L. Ji, Hang Wu, Xihong Zou","doi":"10.1177/16878132231189070","DOIUrl":"https://doi.org/10.1177/16878132231189070","url":null,"abstract":"In this paper, a novel thin-walled double-hexagonal crash box is first proposed and then multi-objective robust optimized for better overall crashworthiness under multi-angle impact loading, using a proposed hybrid method combining aluminum foam-filling and Taguchi-grey relational analysis (GRA). Specifically, the finite element (FE) models of the regularly-shaped double-hexagonal column (DHC) extracted from original irregularly-shaped crash box under multi-angle impact loading, including hollow (H-DHC) and foam-filled (F-DHC), are first built and validated by experiments. On this basis, a comprehensive crashworthiness comparison is conducted to explore relative merits of F-DHC over original H-DHC under multi-angle impact loading. After that, the F-DHC is multi-objective robust optimized for maximizing overall specific energy absorption (SEAθ) and minimizing overall initial peak crushing force (IPCF0) simultaneously under multi-angle impact loading, using a hybrid method of Taguchi-GRA. At last, a bumper-crash box integrated crashworthiness analysis under multi-angle impact loading is executed to further verify the optimization. The optimal F-DHC and the optimized crash box within the optimal F-DHC demonstrate evident improvement of crashworthiness compared to their respective initial designs, indicating aluminum foam-filling combined with Taguchi-GRA could be an effective approach for multi-objective robust optimization of the novel crash box and other similar vehicle structures.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41724115","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

Pneumatic rotary nozzle structure optimization design and airflow characteristics analysis 气动旋转喷嘴结构优化设计及气流特性分析

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231195016

Pengyu Wang, Wenlong Yang

{"title":"Pneumatic rotary nozzle structure optimization design and airflow characteristics analysis","authors":"Pengyu Wang, Wenlong Yang","doi":"10.1177/16878132231195016","DOIUrl":"https://doi.org/10.1177/16878132231195016","url":null,"abstract":"In this paper, the impact jet field between the pneumatic nozzle and the workpiece surface is simulated by the computational fluid dynamics method, and the influence law of the nozzle structure parameters on the jet performance is obtained by combining the response surface method (RSM), so as to improve the dust removal effect of the pneumatic nozzle. Firstly, the nozzle impact jet field calculation model was established, and the experimental platform of wind speed and volume measurement was built to verify the accuracy of the numerical calculation model and to simulate and analyze the jet field distribution characteristics of the nozzle under rotating working conditions. Then combined with the Box-Behnken Design (BBD) method, a response surface regression model with nozzle inlet radius (R1), cylindrical section length (L), and cone angle (A) as design variables and nozzle jet fixed point (20 mm) flow rate as the target variable was established to find the optimal combination of nozzle characteristics parameters. The results show that the optimized nozzle characteristics parameters using RSM can effectively improve the nozzle jet performance, the optimized jet flow rate increased by 8.38%, and can be more effective in dust removal; jet pressure on the workpiece surface decreases as the nozzle incidence angle increases; in the speed range of 400–1200 r/min, the pressure change caused by the jet on the wall surface is small, and the flow rate is relatively stable.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46902907","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

Influence of the shutdown process of the driveline on the generator bearing life in the diesel generator set 柴油发电机组传动系停机过程对发电机轴承寿命的影响

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231190062

Shizhe Song, Yan Huang, Chunrong Hua, Dawei Dong, Bing Yan

{"title":"Influence of the shutdown process of the driveline on the generator bearing life in the diesel generator set","authors":"Shizhe Song, Yan Huang, Chunrong Hua, Dawei Dong, Bing Yan","doi":"10.1177/16878132231190062","DOIUrl":"https://doi.org/10.1177/16878132231190062","url":null,"abstract":"Diesel generator sets are commonly used as power sources in transportation due to their versatility and cost-effectiveness. During the shutdown process, the diesel engine’s cylinder compression pressure would cause forced vibration in the driveline system through the crank linkage mechanism, resulting in unsteady loads that pose a threat to the bearing life. To address this issue, a coupling forward design method is proposed that takes into account the impact of unsteady loads on bearing life. An experiment was conducted on a 16V280 diesel generator set shutdown process, and a driveline dynamic model was established. The cumulative damage value that connects unsteady loads and bearing life was introduced to quantify the effect of unsteady loads on the bearing life during the shutdown process. The unsteady loads included torque fluctuation and collision forces. The results showed that reducing the driveline key gap and increasing the coupling stiffness can decrease the combined load on bearings and improve bearing life. A large stiffness coupling was designed to achieve shutdown smoothness and a 43.19% reduction in bearing life damage, confirming the design method’s feasibility concerning bearing life.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47299060","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

Fatigue life optimization and lightweight design of wheel based on entropy weight grey relation analysis and modified NSGA-II 基于熵权灰色关联分析和改进NSGA-II的车轮疲劳寿命优化与轻量化设计

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231189119

Shuai Zhang, Dongzhen Lu, Ruixu Li, Liyou Xu, Han Jiang, Yanling Cao, Wenchao Xu

{"title":"Fatigue life optimization and lightweight design of wheel based on entropy weight grey relation analysis and modified NSGA-II","authors":"Shuai Zhang, Dongzhen Lu, Ruixu Li, Liyou Xu, Han Jiang, Yanling Cao, Wenchao Xu","doi":"10.1177/16878132231189119","DOIUrl":"https://doi.org/10.1177/16878132231189119","url":null,"abstract":"In order to study the fatigue performance of wheel and enhance its lightweight design level, this article proposes the structure, design and optimization method of magnesium-aluminum alloy assembled wheel. Taking a 16 × 61 / 2 J type wheel as the research object, the optimal topology of wheel spoke is solved by constructing a topology optimization model for wheel bending and radial fatigue test conditions. A finite element model for bending and radial fatigue testing of assembled wheels was established, which simulates and analyzes the fatigue performance and its influencing factors of the wheel under two working conditions. Combined with contribution analysis method, the modified NSGA-II and entropy weight grey relation analysis (EGRA), the multi-objective optimization of assembled wheel was performed. The result demonstrated that the weight reduction of the assembled wheel after optimized design is 4.49%, while the bending fatigue life and radial fatigue safety factor are decreased by 9.95% and 25%, respectively. In order to better balance the performance of assembled wheel and achieve lightweight design, this article combines the joint topology optimization of assembled wheels with multi-objective optimization method for multiple working conditions and screens the optimal compromise solution by EGRA, which provides an approach for wheel lightweight design and multi-objective optimization.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49277583","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

Design and implementation of the wheel-clamping stay cable inspection robot 车轮夹紧拉索检测机器人的设计与实现

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231194409

Yongming Wang, Xiang Li, Mingxing Yang, Feng Yin

{"title":"Design and implementation of the wheel-clamping stay cable inspection robot","authors":"Yongming Wang, Xiang Li, Mingxing Yang, Feng Yin","doi":"10.1177/16878132231194409","DOIUrl":"https://doi.org/10.1177/16878132231194409","url":null,"abstract":"A new wheel-clamping type inspection robot for bridge stay cables was designed. Its clamping mechanism adopts a four-auxiliary-two-drive wheel clamping scheme, and the driving unit utilizes a single motor with double output shaft. A simple automatic control system of the robot was designed based on Arduino. Then, the diameter range of the stay cable that the robot can hold was calculated. The mechanical model of the robot under clamping condition was established. The curves for the minimum thrust Fe and driving force F required by the robot under different stay cable diameters Φ and inclined angles γ were obtained through Matlab data processing. Based on Adams dynamic simulation, the appropriate shape and material of the wheel, the optimal position of the centroid distribution and how to improve the wind resistance of the wheel were determined. Finally, a prototype robot was developed and a climbing experiment was carried out. The results show that the inspection robot is easy to clamp, simple to operate and control, and the detection speed is 0–5 m/min. The robot can grab stay cables with diameters ranging from 70 to 245 mm and can be used for stay cables with angles ranging from 0° to 90°.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42468828","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

Co-simulation method of pneumatic UAV launching device based on Adams-Hypneu 基于Adams-Hypneu的气动无人机发射装置协同仿真方法

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231189347

Chin-Fa Lee, J. Tsai, C. Kuo

引用次数: 0