Title:
CORRECTION METHOD AND SYSTEM FOR THIN-WALLED CYLINDRICAL SHELL MODEL
Document Type and Number:
WIPO Patent Application WO/2023/142333
Kind Code:
A1
Abstract:
A correction method and system for a thin-walled cylindrical shell model, relating to the technical field of analysis and design of a main bearing member in an aeronautic/astronautic structure. In the method, the influence of a fine feature structure in an astronautic cylindrical shell structure on the rigidity and mass is equivalently transferred to a skin and a stiffener, and then the influence of the fine feature structure on the overall structural bearing capacity is simulated. The influence of the fine feature structure such as a chamfer on the structural mass and rigidity is fully considered, a simulation model is updated by means of a homogenization-based optimization algorithm, and a structural behavior, a local buckling behavior, and a post-buckling behavior of a grid stiffened cylinder when a material exceeds the yield limit and enters a plastic stage can be accurately simulated. The analysis precision of an entity model method and the analysis efficiency of a shell model are both achieved, and the problem of high computational costs in a fine and lightweight design of complex thin-walled structures in carrier rockets is solved.
Inventors:
MA XIANGTAO (CN)
WANG BO (CN)
HAO PENG (CN)
ZHOU ZITONG (CN)
WANG BO (CN)
HAO PENG (CN)
ZHOU ZITONG (CN)
Application Number:
PCT/CN2022/098048
Publication Date:
August 03, 2023
Filing Date:
June 10, 2022
Export Citation:
Assignee:
UNIV DALIAN TECH (CN)
International Classes:
G06F30/15
Foreign References:
| CN106294975A | 2017-01-04 | |||
| CN112434381A | 2021-03-02 | |||
| CN107423468A | 2017-12-01 | |||
| CN113609591A | 2021-11-05 | |||
| US20120116735A1 | 2012-05-10 |
Other References:
YI, SINAN: "Reduced-order and Topological Optimization of Periodic Beam and Slab Structure based on Homogenization", CHINA DOCTORAL DISSERTATIONS FULL-TEXT DATABASE, ENGINEERING SCIENCE AND TECHNOLOGY II, 15 March 2017 (2017-03-15)
Attorney, Agent or Firm:
BEIJING ZHIZHOU PATENT LAW FIRM (CN)
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