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Lightweight cylindrical composite shell structures to support optical instruments in extremely large telescopes: A case study
Zheng, Lingyu1; Zhang, Daxu1; Wang, Long2; Shrestha, Aman1; Song, Zhensen1; Gao, Shengbin3; Xu, Teng4; Xu, Mingming4
2021-07-01
Source PublicationSCIENCE PROGRESS
ISSN0036-8504
Volume104Issue:3Pages:26
AbstractAiming at the issues of heavy weight and insufficient structural performance of optical instrument supporting structures in extremely large telescopes, the Wide-Field Optical Spectrograph (WFOS) of the Thirty Meter Telescope (TMT) was taken as a case to study. In order to develop lightweight structures which satisfies the design requirements for mass and stiffness, a design scheme of cylindrical composite shells supporting structure was proposed and their finite element models were developed. A size optimisation and a ply sequence optimisation of the composite structure were carried out. The structures before and after optimisation were evaluated from the aspects of mass, displacement, failure index and fundamental frequency. After the optimised design, the mass of the optimised WFOS cylindrical composite shell structure is reduced to approximately 50%, but its maximum displacement (0.513 mm) and fundamental frequency (8.275 Hz) are nearly unchanged. The study indicates that a cylindrical composite shell structure is an efficient structural form for large optical instruments.
KeywordTelescope optical spectrograph composite structures optimisation finite element analysis
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.1177/00368504211036147
WOS KeywordSTACKING-SEQUENCE OPTIMIZATION ; STRESS-STRAIN CURVES ; FAILURE ENVELOPES ; FRACTURE-BEHAVIOR ; PREDICTION ; DESIGN ; 0-DEGREES/90-DEGREES
Language英语
Funding ProjectNational Natural Science Foundation of China[U1831105] ; National Natural Science Foundation of China[12072192] ; National Natural Science Foundation of China[11603054] ; National Natural Science Foundation of China[CALT201808]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaEducation & Educational Research ; Science & Technology - Other Topics
WOS SubjectEducation, Scientific Disciplines ; Multidisciplinary Sciences
WOS IDWOS:000697992900001
PublisherSAGE PUBLICATIONS LTD
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/75750
Collection中国科学院国家天文台
Corresponding AuthorZhang, Daxu
Affiliation1.Shanghai Jiao Tong Univ, Sch Naval Architecture Ocean & Civil Engn, State Key Lab Ocean Engn, Shanghai Key Lab Digital Maintenance Bldg & Infra, A517 Mulan Bldg,800 Dongchuan Rd, Shanghai 200240, Peoples R China
2.Beijing Inst Struct & Environm Engn, Sci & Technol Reliabil & Environm Engn Lab, Beijing, Peoples R China
3.Shanghai Normal Univ, Coll Civil Engn, Shanghai, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ, Nanjing Inst Astron Opt & Technol, Nanjing, Peoples R China
Recommended Citation
GB/T 7714
Zheng, Lingyu,Zhang, Daxu,Wang, Long,et al. Lightweight cylindrical composite shell structures to support optical instruments in extremely large telescopes: A case study[J]. SCIENCE PROGRESS,2021,104(3):26.
APA Zheng, Lingyu.,Zhang, Daxu.,Wang, Long.,Shrestha, Aman.,Song, Zhensen.,...&Xu, Mingming.(2021).Lightweight cylindrical composite shell structures to support optical instruments in extremely large telescopes: A case study.SCIENCE PROGRESS,104(3),26.
MLA Zheng, Lingyu,et al."Lightweight cylindrical composite shell structures to support optical instruments in extremely large telescopes: A case study".SCIENCE PROGRESS 104.3(2021):26.
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