Advances in Mechanical Engineering最新文献_第10页

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":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":"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

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":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":"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

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":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":"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

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

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

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

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":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":"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

Periodic wave impeding barrier as a countermeasure of ground vibration 作为地面振动对抗手段的周期波障

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231190994

Hinde Laghfiri, N. Lamdouar, S. Abbas, El Mostapha Boudi

{"title":"Periodic wave impeding barrier as a countermeasure of ground vibration","authors":"Hinde Laghfiri, N. Lamdouar, S. Abbas, El Mostapha Boudi","doi":"10.1177/16878132231190994","DOIUrl":"https://doi.org/10.1177/16878132231190994","url":null,"abstract":"Single wave impeding barrier has been widely evaluated to attenuate vibrations. Nevertheless, research on the utilization of multiple-layer wave impeding barriers is extremely limited since most studies focus on periodic foundations and periodic piles. In this work, the attenuation of ground vibration utilizing a periodic wave-impeding barrier composed of rigid and elastic materials was investigated by applying improved plane wave expansion approach using the notion of phononic crystals, then the simulation of the proposed barrier is presented to demonstrate its relevance to the real case, where it can isolate more than 75% of vibration induced by El Centro earthquake. The effects of the key factors on the attenuation zone of the proposed wave impeding barrier are evaluated by conducting a thorough parametric study. Numerical results demonstrate that the mitigation efficiency at low frequencies increased as Young’s modulus of elastic material increased and as the density of two materials and periodic constant decreased. In addition, the proposed ANN model showed high accuracy to predict those parameters in order to choose them according to the desired attenuation zone. The findings of this study will aid the stakeholders in selecting the optimal geometrical and physical characteristics of the suggested barrier to attenuate vibration.","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":"43109860","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 coupling factors on structural reliability based on polynomial response surface optimization model 基于多项式响应面优化模型的耦合因素对结构可靠度的影响

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2023-08-01 DOI: 10.1177/16878132231184145

Kaijia Jiang, Junhao Wang, Zhongquan Chen, Qiangqiang Zhou, Shuheng Jiang

{"title":"Influence of coupling factors on structural reliability based on polynomial response surface optimization model","authors":"Kaijia Jiang, Junhao Wang, Zhongquan Chen, Qiangqiang Zhou, Shuheng Jiang","doi":"10.1177/16878132231184145","DOIUrl":"https://doi.org/10.1177/16878132231184145","url":null,"abstract":"The sensitivity analysis model is frequently used to express the influence of conditional elements on structural reliability. However, the traditional sensitivity analysis model is limited to a few influencing factors, and has a small scope of application. In this paper, a modified sensitivity model is proposed by combining the optimal polynomial response surface function with the Sobol sensitivity algorithm. And the sensitivity calculation approach was combined with coupling factor test design, range verification, multi-body dynamics analysis and structural statics analysis, which enables to achieve the quantitative sensitivity value of the influence of conditional factors on structural reliability. Finally, a typical harvester structure is selected as a case, to verify the evaluation accuracy and effectiveness of the revised model. The results show that the sensitivity of threshing drum speed has the greatest influence, while the sensitivity of granary load has the least influence. The average quantitative prediction accuracy of revised approach is up to 97.36%. The revised model can accurately evaluate the sensitivity value of coupled influencing factors for industrial equipment.","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":"42208366","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