Finite element analysis of layered, variable density, ball bearings based on pearl and turtle shell bionic structures

2020 ◽  
Vol 72 (6) ◽  
pp. 779-787
Author(s):  
Jing Hu ◽  
Qiong-Ying Lv ◽  
Xin-Ming Zhang ◽  
Zeng-Yan Wei ◽  
Hai Long Li
Keyword(s):  
Finite Element ◽  
Peer Review ◽  
Variable Density ◽  
Ball Bearings ◽  
The Finite Element Method ◽  
Analytic Hierarchy ◽  
Element Analysis ◽  
Content Type ◽  
Analytic Hierarchy Process Method ◽  
Hierarchy Process

Purpose This paper aims to present ball bearings with a composite structure based on the bionics principle and shows the comparison between five types of different structures. Design/methodology/approach By means of the finite element method, the stress and other parameters between different structures are compared and verified. Finally, the comprehensive parameters of different structures are evaluated by the analytic hierarchy process method. Findings The evaluation of the comprehensive parameters of five types of structures is shown here. Originality/value The value of this paper is calculated and compared to the parameters of five types of different structures, and the parameter score evaluation of each structure is given. Different structures can be selected according to different parameter requirements, which to provide a theoretical basis for the design of ball bearings. Peer review The peer review history for this article is available at: https://publons.com/publon10.1108/ILT-10-2019-0413

A novel MCDM model for prioritizing the renewable power plants’ construction

2019 ◽  
Vol 30 (2) ◽  
pp. 383-399 ◽  
Author(s):  
Fatima Sedady ◽  
Mohammad Ali Beheshtinia
Keyword(s):  
Power Plants ◽  
Environmental Aspects ◽  
Tidal Power ◽  
Analytic Hierarchy ◽  
Content Type ◽  
Renewable Power ◽  
Comparison Results ◽  
Criteria Weights ◽  
Analytic Hierarchy Process Method ◽  
Hierarchy Process

Purpose The purpose of this paper is to propose a new multi-criteria decision making (MCDM) technique to determine the priority of renewable power plants construction conceding technical, economic, social, political and environmental aspects. Design/methodology/approach First, a comprehensive set of 5 main criteria of technical, economic, social, political and environmental are considered for renewable power plants construction, each including 5 sub-criteria (a total of 25 sub-criteria). Then, the analytic hierarchy process method is used to determine the weight of the criteria. Finally, a new MCDM technique proposed to prioritize the construction of renewable power plants, named TOPKOR. To demonstrate the capability of the proposed method, a case study is conducted in which six types of renewable power plants are evaluated. Findings Comparison results of the main criteria weights show that the “economic” [0.403], “environmental” [0.296] and “technical” [0.17] aspects have the highest importance, respectively. The results also show that solar, hydroelectric and wave and tidal power plants have the highest priority for construction, respectively. Research limitations/implications The result of this research could be useful for related decision makers in construction of the renewable power plants to have a comprehensive set of criteria in technical, economic, social, political and environmental aspects in their decision process. Originality/value This research provides a comprehensive set of criteria and sub-criteria for prioritizing the renewable power plants. Moreover, a new hybrid MCDM technique is introduced for prioritizing the construction of power plants.

Assessment and selection of psychological attributes: design team perspectives

2016 ◽  
Vol 14 (4) ◽  
pp. 874-896 ◽  
Author(s):  
Shailendra Kumar
Keyword(s):  
Engineering Design ◽  
Mechanical Systems ◽  
Analytic Hierarchy ◽  
Content Type ◽  
Psychological Attributes ◽  
Team Environment ◽  
Analytic Hierarchy Process Method ◽  
Maintenance Personnel ◽  
Hierarchy Process ◽  
Selection Of

Purpose The purpose of this paper is to bridge the gap between physical and metaphysical entities in the context of product/system design. The paper talks about the grey area of human psychology and presents a theoretical framework for the identification and selection of psychological attributes for designers. Design/methodology/approach On the basis of a literature review, this paper identifies various psychological attributes affecting the performance of designers in a team environment and then analyses the same. Findings The paper talks about a new shift in engineering design and designs for maintainability of mechanical systems. Practical implications A procedure based on the analytic hierarchy process method is applied. The developed procedure is useful in the assessment and selection of coveted psychological attributes for personnel in general and for designers in particular. Originality/value The paper highlights the immense role of psychology in engineering design, especially in the design for maintainability of mechanical systems. The paper will be useful to researchers, designers, maintenance personnel and professionals from the domain of engineering design, irrespective of their field of application. This paper is equally useful for human resource and management professionals/researchers.

In pursuit of an environmentally friendly convention industry

2017 ◽  
Vol 29 (3) ◽  
pp. 1028-1051 ◽  
Author(s):  
Hyo-Yeun Park ◽  
Dae-Kwan Kim
Keyword(s):  
Evaluation Framework ◽  
Socially Responsible ◽  
Analytic Hierarchy ◽  
Content Type ◽  
Environmentally Sustainable ◽  
Managerial Implications ◽  
Analytic Hierarchy Process Method ◽  
Hierarchy Process ◽  
Sustainability Framework ◽  
Convention Industry

Purpose This paper aims to systematically develop a sustainability framework and guidelines for the green convention industry to cover the entire process of hosting a convention. Design/methodology/approach The guidelines were designed in three phases: defining a sustainability framework for a green convention, conducting a three-round Delphi survey and developing comprehensive guidelines. The relative weights and/or importance were calculated and compared based on questionnaires and the analytic hierarchy process method. Findings This study summarized 153 sustainable practices and their relative importance (seven categories and 37 subcategories) to suggest future directions and managerial implications for academia and practitioners to cope with negative environmental impacts and to create an environmentally sustainable convention industry. Research limitations/implications Because the proposed framework and guidelines were developed in a particular environment, their applicability might be improved by further review prior to translating them into another context. Practical implications This study provides implications to help practitioners plan and execute events in more environmentally and socially responsible ways. Practitioners may use the proposed guidelines, either as a whole or in part, to select the areas that are most applicable or in need of attention. Additionally, the guidelines may be used as an evaluation framework after hosting a convention to indicate specific ways to reduce harmful environmental practices and the importance of each practice. Originality/value The proposed sustainability framework and guidelines consider all aspects of the convention industry, including all possible aspects of stakeholders that may affect convention organizers and participants, as well as related industries.

Comprehensive evaluation of Iranian regional innovation system (RIS) performance using analytic hierarchy process (AHP)

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ali Asghar Sadabadi ◽  
Zohreh Rahimi Rad ◽  
Kiarash Fartash
Keyword(s):  
Analytic Hierarchy Process ◽  
Comprehensive Evaluation ◽  
Innovation System ◽  
Assessment Model ◽  
Regional Innovation ◽  
Analytic Hierarchy ◽  
Content Type ◽  
Fuzzy Delphi ◽  
Analytic Hierarchy Process Method ◽  
Hierarchy Process

Purpose This study aims to to provide a model based on the context and conditions of the regions in Iran for monitoring regional innovation systems (RISs). Design/methodology/approach In the first stage, after reviewing the literature, interviewing the experts, and then thematic analyzing the content of the obtained data, initial Dimensions and indicators were identified. Then, a fuzzy Delphi technique and a seven-scale questionnaire were used to test the results and expert opinion. Finally, after the extraction and correction of the indicators to evaluate the RISs, a comprehensive model was identified in 5 dimensions, 16 indicators and 176 sub-indicators. In the next step, the importance weights of the main 16 indicators were determined using the analytic hierarchy process method. Findings The proposed RIS assessment model consists of firms’ behavior and regional interactions, economy, human capital, innovative outputs, locational features, that each dimension has its own indicators and sub-indicators, each one is discussed in the paper. Originality/value The research contribution is that the proposed RIS model of this research is the first model that is appropriate to the context of Iran.

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