Pub Date : 2023-08-01DOI: 10.1177/16878132231194409
Yongming Wang, Xiang Li, Mingxing Yang, Feng Yin
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°.
{"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}
Pub Date : 2023-08-01DOI: 10.1177/16878132231190341
Shuangfei Min, Yuegang Tan, Fan Zhang, Yiwen Tu
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.
{"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}
Pub Date : 2023-08-01DOI: 10.1177/16878132231189347
Chin-Fa Lee, J. Tsai, C. Kuo
The purpose of this paper is to use the co-simulation method to predict the velocity of the dummy during the launching process. Taking the PL-40 launching device of ELI Company as the research target, Adams is used to establish the mechanism model, and Hypneu establishes the pneumatic model. At the launching conditions of the 10 kg dummy and 10 bar tank pressure, the preliminary co-simulation result is compared with the launching test, and the velocity error is −3.7%. The frictional force is not a constant and depends strongly on the shuttle’s pull force during the launching process. The results are coincident with the shuttle’s kinetics equations and co-simulation results. The frictional forces between wheels and rail significantly affect the dummy’s velocity of launch devices (LDs). The effect of drag force on dummy velocity is 0.4% for the LD during launching. While the co-simulation results are compared with the reference of all conditions, and the maximum launching velocity error is −3.8%.
{"title":"Co-simulation method of pneumatic UAV launching device based on Adams-Hypneu","authors":"Chin-Fa Lee, J. Tsai, C. Kuo","doi":"10.1177/16878132231189347","DOIUrl":"https://doi.org/10.1177/16878132231189347","url":null,"abstract":"The purpose of this paper is to use the co-simulation method to predict the velocity of the dummy during the launching process. Taking the PL-40 launching device of ELI Company as the research target, Adams is used to establish the mechanism model, and Hypneu establishes the pneumatic model. At the launching conditions of the 10 kg dummy and 10 bar tank pressure, the preliminary co-simulation result is compared with the launching test, and the velocity error is −3.7%. The frictional force is not a constant and depends strongly on the shuttle’s pull force during the launching process. The results are coincident with the shuttle’s kinetics equations and co-simulation results. The frictional forces between wheels and rail significantly affect the dummy’s velocity of launch devices (LDs). The effect of drag force on dummy velocity is 0.4% for the LD during launching. While the co-simulation results are compared with the reference of all conditions, and the maximum launching velocity error is −3.8%.","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":"45084818","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}
Pub Date : 2023-08-01DOI: 10.1177/16878132231193206
Jianhui Tian, Jialiang Wu, C. Bowen, Jinjuan Sun, Zaishuang Wang, G. Hu
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.
{"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}
Pub Date : 2023-08-01DOI: 10.1177/16878132231192299
Yang Qi, Lu Zhang
To meet the requirements of high flexibility, high stiffness, and large working range of space debris cleaning technology, a foldable composite space capture mechanism is proposed based on the finite screw theory in this paper. The degree of freedom of the mechanism is analyzed by using the screw theory and its degree of freedom is obtained. The closed-loop vector method and DH method are used to analyze the kinematics of the mechanism, and the position solution of the mechanism is derived. The analytical expressions of velocity and acceleration solutions are obtained by differential calculation. According to the analysis of numerical example, the kinematic model of the mechanism is built in the simulation environment, and the simulation experiment is carried out for the motion trajectory of the mechanism. The correctness of theoretical analysis solution and method is proved by contrasting and analyzing motion trajectory, and it is verified that the space capture mechanism uses the foldable property to form large workspace to complete the capture of the target.
{"title":"Configuration design and kinematics analysis of foldable composite space capture mechanism","authors":"Yang Qi, Lu Zhang","doi":"10.1177/16878132231192299","DOIUrl":"https://doi.org/10.1177/16878132231192299","url":null,"abstract":"To meet the requirements of high flexibility, high stiffness, and large working range of space debris cleaning technology, a foldable composite space capture mechanism is proposed based on the finite screw theory in this paper. The degree of freedom of the mechanism is analyzed by using the screw theory and its degree of freedom is obtained. The closed-loop vector method and DH method are used to analyze the kinematics of the mechanism, and the position solution of the mechanism is derived. The analytical expressions of velocity and acceleration solutions are obtained by differential calculation. According to the analysis of numerical example, the kinematic model of the mechanism is built in the simulation environment, and the simulation experiment is carried out for the motion trajectory of the mechanism. The correctness of theoretical analysis solution and method is proved by contrasting and analyzing motion trajectory, and it is verified that the space capture mechanism uses the foldable property to form large workspace to complete the capture of the target.","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":"49656324","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}
Pub Date : 2023-08-01DOI: 10.1177/16878132231192226
Zhou Lina, Senlin Zhang
Under the action of the seismic waves, reinforced concrete shear walls (RC shear walls) often exhibit hysteresis characteristics such as strength and stiffness degradation, and pinching effects due to factors such as slippage, cumulative damage of concrete, and non-uniform corrosion of steel bars or reinforcements. The hysteresis curve is asymmetric. In this paper, a nonlinear restoring force mechanical model, based on the Bouc-Wen-Baber-Noori (BWBN) model, that can describe the hysteresis characteristics of the RC shear wall is obtained by introducing the asymmetry factor. Particular attention is the solution of equation that the hysteretic energy ε at different loading stages in this model is regarded as parameters to be identified. The ordinary differential equations for parameter identification are derived into four segments. The improved particle swarm organization (IPSO) algorithm is used for parameters identification, which superiority is verified by comparison to the genetic algorithm. The accuracy of this model is verified by using RC shear wall finite element simulation data.
{"title":"Modeling and parameter identification of asymmetric restoring force of reinforced concrete shear walls","authors":"Zhou Lina, Senlin Zhang","doi":"10.1177/16878132231192226","DOIUrl":"https://doi.org/10.1177/16878132231192226","url":null,"abstract":"Under the action of the seismic waves, reinforced concrete shear walls (RC shear walls) often exhibit hysteresis characteristics such as strength and stiffness degradation, and pinching effects due to factors such as slippage, cumulative damage of concrete, and non-uniform corrosion of steel bars or reinforcements. The hysteresis curve is asymmetric. In this paper, a nonlinear restoring force mechanical model, based on the Bouc-Wen-Baber-Noori (BWBN) model, that can describe the hysteresis characteristics of the RC shear wall is obtained by introducing the asymmetry factor. Particular attention is the solution of equation that the hysteretic energy ε at different loading stages in this model is regarded as parameters to be identified. The ordinary differential equations for parameter identification are derived into four segments. The improved particle swarm organization (IPSO) algorithm is used for parameters identification, which superiority is verified by comparison to the genetic algorithm. The accuracy of this model is verified by using RC shear wall finite element simulation data.","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":"42946778","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}
Pub Date : 2023-08-01DOI: 10.1177/16878132231194827
Yuchao Wang, Jiarong Liu, Wenwu Liu, C. Li, Kun Guo
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.
{"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}
Pub Date : 2023-08-01DOI: 10.1177/16878132231190060
A. Alnahdi, T. Gul
The potential of hybrid nanofluid (HNF) to maximize heat transportation has captured the attention of many researchers, inspiring them to further investigate the performance of the common base fluid. Conventional flow in Cu-Al2O3/H2O hybrid nanofluid (HNF) toward a high permeability horizontal flat plate incorporated in Darcy porous medium has been explored in this research to determine how Cu-Al2O3/H2O hybrid fluid will respond thermodynamically when physical factors like suction/injection and slip boundary conditions are present. In addition, the effects of radiation, dissipations, energy engagement, and inclined magnetized field associated with the fluid flow were studied. The governing system is transformed by similarity transformations to a solvable ordinary differential equation by employing HAM (Homotopy Analysis Method) scheme. The main results show that Cu-Al2O3/H2O has high thermal conductivity compared to Cu/H2O. As a result, hybrid fluids are essential for the development of thermal phenomena.
{"title":"Hybrid nanofluid flow over a slippery surface for thermal exploration","authors":"A. Alnahdi, T. Gul","doi":"10.1177/16878132231190060","DOIUrl":"https://doi.org/10.1177/16878132231190060","url":null,"abstract":"The potential of hybrid nanofluid (HNF) to maximize heat transportation has captured the attention of many researchers, inspiring them to further investigate the performance of the common base fluid. Conventional flow in Cu-Al2O3/H2O hybrid nanofluid (HNF) toward a high permeability horizontal flat plate incorporated in Darcy porous medium has been explored in this research to determine how Cu-Al2O3/H2O hybrid fluid will respond thermodynamically when physical factors like suction/injection and slip boundary conditions are present. In addition, the effects of radiation, dissipations, energy engagement, and inclined magnetized field associated with the fluid flow were studied. The governing system is transformed by similarity transformations to a solvable ordinary differential equation by employing HAM (Homotopy Analysis Method) scheme. The main results show that Cu-Al2O3/H2O has high thermal conductivity compared to Cu/H2O. As a result, hybrid fluids are essential for the development of thermal phenomena.","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":"49559963","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}
Pub Date : 2023-08-01DOI: 10.1177/16878132231187797
James Baldwin
Researchers in Vietnam and Canada have developed a ready to use model to predict critical loads for functionally graded materials. Their neural network-based technique is ideal for users working on functionally graded plates and does not require advanced coding skill to implement [Le T-T, Duong HT, Phan HC. Optimization of Neural Network architecture and derivation of closed-form equation to predict ultimate load of functionally graded material plate. Advances in Mechanical Engineering. 2023;15(5). doi:10.1177/16878132231175002].
{"title":"Making the optimal grade","authors":"James Baldwin","doi":"10.1177/16878132231187797","DOIUrl":"https://doi.org/10.1177/16878132231187797","url":null,"abstract":"Researchers in Vietnam and Canada have developed a ready to use model to predict critical loads for functionally graded materials. Their neural network-based technique is ideal for users working on functionally graded plates and does not require advanced coding skill to implement [Le T-T, Duong HT, Phan HC. Optimization of Neural Network architecture and derivation of closed-form equation to predict ultimate load of functionally graded material plate. Advances in Mechanical Engineering. 2023;15(5). doi:10.1177/16878132231175002].","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":"47051547","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}
Pub Date : 2023-08-01DOI: 10.1177/16878132231190996
Dongwei Liu, Xiaomin Zhu, Runtong Zhang
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.
{"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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：