| LIGHTWEIGHT DESIGN OF CFRP-LAMINATED STRUCTURES BY COMBINING MICROSCOPICAL HOMOGENIZATION AND MACROSCOPICAL OPTIMIZATION |
| Fei Cheng, Chenggong Zheng, Yunfei Liu, Wenjie Zuo, Xinzhe Wang, Guikai Guo |
| Jilin University |
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| ABSTRACT |
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We developed a new method for the design of carbon-fiber reinforced plastic (CFRP)-laminated structures, which combined the asymptotic homogenization method and ply optimization. The equivalent mechanical properties of a single-layer CFRP were calculated using the asymptotic homogenization method. The ply optimization of the laminated structures was divided into three parts: an initial free-size optimization to identify the optimal ply shapes and locations of patches per ply orientation; an optimization of the final size to identify the optimal thicknesses of each ply; and an optimization of the final ply stacking sequence to obtain the optimal stacking sequence. Using the example of the floor of a body-in-white model, our method provided a reasonable optimization result with reduced mass by 60 %. The proposed method provides an efficient way to investigate laminated structures and has potential for lightweight design and analysis of automobile components. |
| Key Words:
Laminated structures, Asymptotic homogenization method, Ply optimization, Vehicle body |
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Corresponding Author.
Guikai Guo , Email. 
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