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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 17    Special 1    November 2007

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Effects of light-mass structural forms on silicon carbide mirror
HAN Jie-cai(韩杰才), HAN Yuan-yuan(韩媛媛), ZHANG Yu-min(张宇民),
ZHANG Jian-han(张剑寒), YAO Wang(姚  旺), ZHOU Yu-feng(周玉锋)

Center for Composite Materials, Harbin Institute of Technology, Harbin 150080, China

Abstract:To reduce the mass of the mirror, silicon carbide was used as the material and four light-mass structures were designed. The properties of SiC mirror open back structure with triangular cell, open back structure with hexagonal cell, sandwich structure with triangular cell, sandwich structure with hexagonal cell, were analyzed by using finite element method. The results of the static, dynamic, and thermal properties of the four kinds of SiC mirror indicate that the surface figures of the SiC mirrors are all satisfactory with the design requirements. The properties of the mirrors with sandwich structure are better than those with open back structure, except the high cost. And the mirror with triangular cell has better combination properties than the mirror with hexagonal cell. Considering the overall performance and the cost, open back structure with triangular cell is the most suitable for the SiC mirror.

 

Key words: silicon carbide; mirror; light-mass; structural form; finite element

ISSN 1672-7029
CN 43-1423/U

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