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Research on Multiobjective Topology Optimization of Diesel Engine Cylinder Block Based on Analytic Hierarchy Process
Joint Authors
Wu, Fenghe
Wang, Zhaohua
Han, Jinxu
Pei, Guobin
Source
Mathematical Problems in Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-03-10
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
There are alternating impact loads for the diesel engine cylinder block.
The topology optimization of the extreme single-working condition cannot guarantee its overall mechanical performance, and the traditional multiworking condition optimization has the problem that the weight coefficients are difficult to determine.
Thus, a multiobjective topology optimization method based on analytic hierarchy process is proposed.
Firstly, the static, dynamic characteristics and structure efficiency are calculated by the finite element analysis which indicates the direction of topology optimization for the cylinder block.
The hierarchical structure model of topology optimization, including 12 weighting coefficients, is constructed considering static multiworking condition stiffness and dynamic multiorder natural frequency.
The comprehensive evaluation function for the cylinder block is established by the compromise programming method and the weight coefficients are determined based on analytic hierarchy process.
The optimization mathematical model is established and the multiobjective topology optimization of the cylinder block is carried out.
The optimization results show that the proposed method can take into account structural multiworking condition performance, which has obvious advantages over the single objective topology optimization.
The simulation results show that the static and dynamic characteristics are improved to some extent and the overall mechanical performance of the new model is more uniform with a 5.22% reduction in weight.
It shows that the topology structure of the cylinder block is more reasonable.
American Psychological Association (APA)
Wu, Fenghe& Wang, Zhaohua& Han, Jinxu& Pei, Guobin. 2019. Research on Multiobjective Topology Optimization of Diesel Engine Cylinder Block Based on Analytic Hierarchy Process. Mathematical Problems in Engineering،Vol. 2019, no. 2019, pp.1-16.
https://search.emarefa.net/detail/BIM-1196389
Modern Language Association (MLA)
Wu, Fenghe…[et al.]. Research on Multiobjective Topology Optimization of Diesel Engine Cylinder Block Based on Analytic Hierarchy Process. Mathematical Problems in Engineering No. 2019 (2019), pp.1-16.
https://search.emarefa.net/detail/BIM-1196389
American Medical Association (AMA)
Wu, Fenghe& Wang, Zhaohua& Han, Jinxu& Pei, Guobin. Research on Multiobjective Topology Optimization of Diesel Engine Cylinder Block Based on Analytic Hierarchy Process. Mathematical Problems in Engineering. 2019. Vol. 2019, no. 2019, pp.1-16.
https://search.emarefa.net/detail/BIM-1196389
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1196389