Systematic Design and Optimization of Composite Sandwich Car Structures
Date Issued
2007
Date
2007
Author(s)
Chang, Chih-Kai
DOI
zh-TW
Abstract
This research focuses on ultra-high specific stiffness and strength composites sandwich car structures. The topics include material selection, analytical evaluation, experiments, highly efficient and automatic optimization tools, and detailed insert design. It aims to construct complete and systematic design procedures to deal with complicated composites structures.
It firstly compares practical face and core materials for selection references, and summarizes experiments and analytical optimization methods for simple beams or plates. The whole body structure optimization is then carried out with a novel algorithm-ESSO (Evolutionary Sandwich Structural Optimization) and an equivalent shell element. The proposed optimization method can efficiently find out best material combinations to fulfill tough stiffness and strength requirements for various driving conditions. Besides, it developes detailed design methods for sandwich structure weakest points, where concentrated loads applied.
Two successful design examples-the third generation solar car and the first generation fuel-cells hybrid car of Mechanical Engineering Department, National Taiwan University demonstrate efficiency and accuracy of the proposed design and optimization procedures. In conclusion, this research provides an effective way for designers to design a highly efficient green car or a high-performance sports car that expects an extra-low weight structure.
Subjects
最佳化
複合材料
三明治結構
車體結構
演化式方法
等效元素
optimization
composites
sandwich structure
car body
evolutionary
equivalent element
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-96-F90522511-1.pdf
Size
23.53 KB
Format
Adobe PDF
Checksum
(MD5):e5f8feb586c86c28893f98756e081399