Advances in Mechanical Engineering最新文献_第9页

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":" ","pages":""},"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

3D printing process for continuous fibre reinforced composites with variable deposition direction 可变沉积方向连续纤维增强复合材料的3D打印工艺

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231190341

Shuangfei Min, Yuegang Tan, Fan Zhang, Yiwen Tu

{"title":"3D printing process for continuous fibre reinforced composites with variable deposition direction","authors":"Shuangfei Min, Yuegang Tan, Fan Zhang, Yiwen Tu","doi":"10.1177/16878132231190341","DOIUrl":"https://doi.org/10.1177/16878132231190341","url":null,"abstract":"Continuous fibre reinforced polymer (CFRP) have a distinctive anisotropic character. In traditional 3D printing processes, deposition direction cannot be adjusted. As a result, the performance of CFRP parts is deficient in the fixed direction. To address the issue, this paper proposes a variable deposition direction (VDD) 3D printing process for CFRP. The process optimises the mechanical properties of the moulded part by adjusting the direction of deposition. The principles and processes of the VDD 3D printing are described in detail. Then, using the hollow cylinder as an example, a mathematical model of the variable deposition direction structure is developed, and subsequent simulations is conducted to evaluate its mechanical properties. In the experimental part, the composite material used has a fibre content of 20% and consists of PETG and carbon fibres. The VDD hollow cylindrical parts have been printed to verify the feasibility of the process. And performance testing experiments were carried out on a variety of test specimens of different structures with VDD. The results show that adjusting the deposition direction of the CFRP can greatly improve the tensile properties of hollow cylinder. The tensile properties of a suitable structure with VDD were improved by a factor of 69.4 compared to a single deposition direction structure. And the actual tensile situation is consistent with the simulation. To summarise, the proposed method can effectively solve the defects of the traditional process and optimise the mechanical properties of the moulded parts.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43944943","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

The emergent behavior of three-dimensional and three-phase thermal network model for the heterogeneous materials 非均质材料三维和三相热网络模型的涌现行为

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231193206

Jianhui Tian, Jialiang Wu, C. Bowen, Jinjuan Sun, Zaishuang Wang, G. Hu

{"title":"The emergent behavior of three-dimensional and three-phase thermal network model for the heterogeneous materials","authors":"Jianhui Tian, Jialiang Wu, C. Bowen, Jinjuan Sun, Zaishuang Wang, G. Hu","doi":"10.1177/16878132231193206","DOIUrl":"https://doi.org/10.1177/16878132231193206","url":null,"abstract":"The study of the heat transfer properties of heterogeneous materials has been a world-wide research focus, for example in sectors related to thermal management in aerospace, architecture, and geology. In this paper, the emergent behavior and thermal conduction characteristics of three-dimensional and three-phase heterogeneous materials thermal networks are studied using the finite element method. The results show that the existence of percolation paths of each phase has a strong impact on the effective properties of the network when the contrast in thermal conductivities of each phase is high, and percolation also affects the effective thermal conductivity of the whole thermal network system. However, when the contrast in thermal conductivity between the two phases is low, the thermal networks exhibit a more consistent and “emergent” behavior, and the effective thermal conductivity of thermal networks at the same volume fraction changes to a lower extent from network to network. This paper also demonstrates that a logarithmic mixing rule can predict the effective thermal conductivity in the low contrast emergent region in three-dimensional networks, and the modeling method provides new approaches for the design of multi-phase composites and prediction of their thermal conduction properties.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48245891","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

Configuration design and kinematics analysis of foldable composite space capture mechanism 可折叠复合材料空间捕获机构的结构设计与运动学分析

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231192299

Yang Qi, Lu Zhang

引用次数: 0

Modeling and parameter identification of asymmetric restoring force of reinforced concrete shear walls 钢筋混凝土剪力墙非对称恢复力的建模与参数识别

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231192226

Zhou Lina, Senlin Zhang

引用次数: 1

Investigation on application and running characteristics of permanent magnet synchronous motor used in lifting system of deep well drilling rig 永磁同步电机在深井钻机提升系统中的应用及运行特性研究

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231194827

Yuchao Wang, Jiarong Liu, Wenwu Liu, C. Li, Kun Guo

{"title":"Investigation on application and running characteristics of permanent magnet synchronous motor used in lifting system of deep well drilling rig","authors":"Yuchao Wang, Jiarong Liu, Wenwu Liu, C. Li, Kun Guo","doi":"10.1177/16878132231194827","DOIUrl":"https://doi.org/10.1177/16878132231194827","url":null,"abstract":"Most geological drilling rigs using asynchronous motor with gear box as the drive device of drawworks have problems of instability at low speed, complex mechanism, and lots maintenance work. This paper proposes an application of permanent magnet synchronous motor (PMSM) used in drawworks. Firstly, running characteristics of PMSM in steady state are analyzed and calculated theoretically, and mathematical models of motor’s power, torque, and power loss are given. Secondly, vector control principle of PMSM is analyzed and introduced, and maximum torque/current control method is finally decided as the basis for the design of control system. Thirdly, running parameters of PMSM in three stages (lowering drill string, constant speed/pressure drilling, and lifting drill string) of each test point were measured, and the curves of key parameters of PMSM are given. Finally, it is concluded that drawworks with PMSMs can not only improve control performance, reduce power consumption, and save energy, but also omit the gearbox, which makes structure of lifting system more compact and reduce lots maintenance work. The research work of this paper lays a foundation for the popularization and application of PMSM in the industry of deep well drilling rig.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44393266","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

Hybrid nanofluid flow over a slippery surface for thermal exploration 用于热探测的光滑表面上的混合纳米流体流动

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231190060

A. Alnahdi, T. Gul

引用次数: 4

Making the optimal grade 做出最佳成绩

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231187797

James Baldwin

引用次数: 0

Q-rung orthopair normal fuzzy Maclaurin symmetric mean aggregation operators based on Schweizer-Skla operations 基于Schweizer-Skla运算的Q-rung正态正规模糊Maclaurin对称均值聚合算子

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231190996

Dongwei Liu, Xiaomin Zhu, Runtong Zhang

{"title":"Q-rung orthopair normal fuzzy Maclaurin symmetric mean aggregation operators based on Schweizer-Skla operations","authors":"Dongwei Liu, Xiaomin Zhu, Runtong Zhang","doi":"10.1177/16878132231190996","DOIUrl":"https://doi.org/10.1177/16878132231190996","url":null,"abstract":"In order to be able to make a good decision, we need to evaluate the uncertainty information of multiple attributes of different alternatives that obey the normal distribution, and the interrelationship among multiple attributes should be considered in the process of evaluating. This paper aims to propose a new multiple attribute decision-making (MADM) method, which uses a new aggregation operator to evaluate the uncertainty information that obey normal distribution comprehensively. We firstly extended Schweizer-Sklar (SS) t-norm (TN) and t-conorm (TCN) to q-rung orthopair normal fuzzy number (q-RONFN) and defined the Schweizer-Skla operational laws of q-rung orthopair normal fuzzy set (q-RONFs). Secondly, we developed q-rung orthopair normal fuzzy Maclaurin symmetric mean aggregation operators based on SS operations considering that the Maclaurin symmetric mean operator can reflect the interrelationship among multiple input variables. Furthermore, we discussed some desirable properties of the above operators, such as monotonicity, commutativity, and idempotency. Lastly, we proposed a novel MADM method based on developed aggregation operators. A numerical example on enterprise partner selection is given to testify the effectiveness of the developed method. The results of analysis indicated that our proposed aggregation operators have stronger information aggregation ability and are more general and flexible for MADM problems.","PeriodicalId":49110,"journal":{"name":"Advances in Mechanical Engineering","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47811070","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