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- Title
1563. Experimental investigation of high temperature thermal-vibration characteristics for composite wing structure of hypersonic flight vehicles.
- Authors
Dafang Wu; Yuewu Wang; Ying Pu; Lan Shang; Zhentong Gao
- Abstract
A thermal-vibration test system is established by combining the high-temperature transient heating simulation system and vibration test apparatus, and this system can carry out experimental research on the thermal modal of high-temperature-resistant composite wing structure of hypersonic flight vehicles under high temperature environment with 1100°C. The vibration signals of the composite wing structure in high-temperature environments are transmitted to non-high temperature field by using self-developed extension configurations and then the vibration signals are measured and identified by using ordinary acceleration sensors. Based on a time-frequency joint analysis technique, the experimental data is analyzed and processed to obtain the key vibration characteristic parameters of composite wing structure, such as the natural frequency and mode shapes, in a thermal-vibration coupled environment up to 1100°C. The experimental results provide an important basis for the dynamic performance analysis and safety design of composite wing structure under high-temperature thermal-vibration conditions.
- Subjects
AIRPLANE wing design; HYPERSONIC planes; VIBRATION (Mechanics); COMPOSITE materials; HIGH temperatures; THERMAL engineering
- Publication
Journal of Vibroengineering, 2015, Vol 17, Issue 2, p917
- ISSN
1392-8716
- Publication type
Article