Optimization of frame structure coach 29/34 seats in static durability state
The stress and deformation of the body frame and chassis frame of a coach subjected to bending, torsion, emergency braking and returning must be considered during the design and manufacture of passenger vehicles. The model of 29/34-seat coach in this investigation is a newly designed vehicle based o...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-11-01
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| Series: | Engineering Science and Technology, an International Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S221509862300201X |
| _version_ | 1797632673063108608 |
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| author | Nguyen Thanh Tam Tien Phuoc Le Ngoc Thai Huynh Quoc Manh Nguyen |
| author_facet | Nguyen Thanh Tam Tien Phuoc Le Ngoc Thai Huynh Quoc Manh Nguyen |
| author_sort | Nguyen Thanh Tam |
| collection | DOAJ |
| description | The stress and deformation of the body frame and chassis frame of a coach subjected to bending, torsion, emergency braking and returning must be considered during the design and manufacture of passenger vehicles. The model of 29/34-seat coach in this investigation is a newly designed vehicle based on the old 29/34-seat coach; the most significant change has been to the chassis. It is vital to ensure it remains safe and durable when the vehicle operates on the road in the 4 cases mentioned above. Therefore, the purpose of this study is to optimise and maintain in a stable state the chassis structure of the 29/34-seat coach by using the Taguchi method based on grey relational analysis. This study has as design variables changes to the number of crossbars on the roof and the thickness of those bars, as the goal is to reduce vehicle weight while ensuring chassis durability. The finite element analysis applied the OptiStruct module of HyperMesh to analyse deformation and stress of the coach chassis. The optimal outcomes indicated that the error between predictive value and the optimal value of the grey relational grade of the proposed optimisation method and the regression analysis are 6% and 1.05%, respectively. The finite element analysis results indicated that when the design variables changed, the deformation and stress of the chassis changed significantly. The proposed optimisation method greatly reduced the deformation and stress of the vehicle. The optimal values of deformation and stress are also recorded in 4 cases: for the bending process 9.675 mm and 153.61 MPa were recorded; for the torsion process, 11.849 mm and 168.61 MPa; for the braking process, 10.569 mm and 161.66 MPa; for the rotation process, 16.162 mm and 200.5 MPa. The Taguchi method based on grey relational analysis helped to reduce vehicle weight by 11.5%. These results are comparable to previous publications. |
| first_indexed | 2024-03-11T11:41:08Z |
| format | Article |
| id | doaj.art-07e632eb2599458194342e61907c43d5 |
| institution | Directory Open Access Journal |
| issn | 2215-0986 |
| language | English |
| last_indexed | 2024-03-11T11:41:08Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Engineering Science and Technology, an International Journal |
| spelling | doaj.art-07e632eb2599458194342e61907c43d52023-11-10T04:16:18ZengElsevierEngineering Science and Technology, an International Journal2215-09862023-11-0147101523Optimization of frame structure coach 29/34 seats in static durability stateNguyen Thanh Tam0Tien Phuoc Le1Ngoc Thai Huynh2Quoc Manh Nguyen3Division of Automotive Engineering, Quy Nhon University, Quy Nhon City 55100, Viet NamFaculty of Vehicle and Energy Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh city 700000, VietnamFaculty of Mechanical Technology, Ho Chi Minh City University of Industry and Trade, Ho Chi Minh City 700000, Viet Nam; Corresponding authors.Faculty of Mechanical Engineering, Hung Yen University of Technology and Education, Hung Yen 160000, Viet Nam; Corresponding authors.The stress and deformation of the body frame and chassis frame of a coach subjected to bending, torsion, emergency braking and returning must be considered during the design and manufacture of passenger vehicles. The model of 29/34-seat coach in this investigation is a newly designed vehicle based on the old 29/34-seat coach; the most significant change has been to the chassis. It is vital to ensure it remains safe and durable when the vehicle operates on the road in the 4 cases mentioned above. Therefore, the purpose of this study is to optimise and maintain in a stable state the chassis structure of the 29/34-seat coach by using the Taguchi method based on grey relational analysis. This study has as design variables changes to the number of crossbars on the roof and the thickness of those bars, as the goal is to reduce vehicle weight while ensuring chassis durability. The finite element analysis applied the OptiStruct module of HyperMesh to analyse deformation and stress of the coach chassis. The optimal outcomes indicated that the error between predictive value and the optimal value of the grey relational grade of the proposed optimisation method and the regression analysis are 6% and 1.05%, respectively. The finite element analysis results indicated that when the design variables changed, the deformation and stress of the chassis changed significantly. The proposed optimisation method greatly reduced the deformation and stress of the vehicle. The optimal values of deformation and stress are also recorded in 4 cases: for the bending process 9.675 mm and 153.61 MPa were recorded; for the torsion process, 11.849 mm and 168.61 MPa; for the braking process, 10.569 mm and 161.66 MPa; for the rotation process, 16.162 mm and 200.5 MPa. The Taguchi method based on grey relational analysis helped to reduce vehicle weight by 11.5%. These results are comparable to previous publications.http://www.sciencedirect.com/science/article/pii/S221509862300201XOptimization of ChassicCoach 29/34 seatsGrey relation analysis methodTaguchi methodFinite element analysis |
| spellingShingle | Nguyen Thanh Tam Tien Phuoc Le Ngoc Thai Huynh Quoc Manh Nguyen Optimization of frame structure coach 29/34 seats in static durability state Engineering Science and Technology, an International Journal Optimization of Chassic Coach 29/34 seats Grey relation analysis method Taguchi method Finite element analysis |
| title | Optimization of frame structure coach 29/34 seats in static durability state |
| title_full | Optimization of frame structure coach 29/34 seats in static durability state |
| title_fullStr | Optimization of frame structure coach 29/34 seats in static durability state |
| title_full_unstemmed | Optimization of frame structure coach 29/34 seats in static durability state |
| title_short | Optimization of frame structure coach 29/34 seats in static durability state |
| title_sort | optimization of frame structure coach 29 34 seats in static durability state |
| topic | Optimization of Chassic Coach 29/34 seats Grey relation analysis method Taguchi method Finite element analysis |
| url | http://www.sciencedirect.com/science/article/pii/S221509862300201X |
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