所属单位：航空学院
发表刊物：CHINESE JOURNAL OF AERONAUTICS
关键字：Bolted connection Composite Multi-scale method Strength analysis Thermal Protection System
摘要：Efficient and accurate strength analysis of bolted connections is essential in analyzing the integral thermal protection system (ITPS) of hypersonic vehicles, since the system bears severe loads and structural failures usually occur at the connections. Investigations of composite mechanical properties used in ITPS are still in progress as the architecture of the composites is complex. A new method is proposed in this paper for strength analysis of bolted connections by investigating the elastic behavior and failure strength of three-dimensional C/C orthogonal composites used in ITPS. In this method a multi-scale finite element method incorporating the global-local method is established to ensure high efficiency in macro-scale and precision in meso-scale in analysis. Simulation results reveal that predictions of material properties show reasonable accuracy compared with test results. And the multi-scale method can analyze the strength of connections efficiently and accurately. (C) 2018 Production and hosting by Elsevier Ltd. on behalf of Chinese Society of Aeronautics and Astronautics.
ISSN号：1000-9361
是否译文：否
发表时间：2018-08-01
合写作者：Liang, Heng,Wang, Yuqing,Zhang, Junhua
通讯作者：童明波
发表时间：2018-08-01