Crashworthiness optimization design of two kinds of different inducing grooves(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2016年01期
- Page:
- 120-126
- Research Field:
- 汽车与机械工程
- Publishing date:
Info
- Title:
- Crashworthiness optimization design of two kinds of different inducing grooves
- Author(s):
- TAN Li-hui; TAN Hong-wu; CUI Xiao-mei; XU Tao
- 1. College of Mechanical and Electrical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, Jilin, China; 2. School of Mechanical Science and Engineering, Jilin University, Changchun 130022, Jilin, China; 3. PetroChina Jilin Petrochemical Company Organic Synthesis Factory EPDM Plant, Jilin 132022, Jilin, China
- Keywords:
- automobile engineering; optimization design; specific energy absorption (SEA); crush force efficiency (CFE); inducing groove; thin-walled component
- PACS:
- U463.83
- DOI:
- -
- Abstract:
- In order to improve crashworthiness of circular cross-section of thin-walled metal component, this paper took thin-walled metal cylindrical tubes as research objects on the basis of inducing indentations and convex grooves. The multi-objective optimization mathematical model was built by taking the specific energy absorption and the crush force efficiency as evaluation indexes, and numbers and radius of the inducing grooves were chosen as optimization parameters. The energy absorption, the maximization peak force and the smoothness of crush force curves were analyzed. The sample points were selected by full factorial experimental design, and collision response of the sample points were got through finite element software LS-DYNA, objective functions were constructed based on the radial basis function (RBF), and multi-objective optimization for thin-walled metal component with the inducing indentations and convex grooves was presented by using the ideal point method. The results show that compared with the original model, crushing force efficiency of the structure of two kinds of inducing grooves increase separately by 53.22%, and 102.15%, and the maximum peak crushing force reduced by 52.1%, and 57.49%. The crush force curve tends to be smoother. Due to the increasing quality of induced structure, the specific energy absorption decrease by 4.05%, 7.99%. Compared with the greatly reduced maximum peak crush force, it can achieve the aim of improving crashworthiness.
Last Update: 2016-02-01