Λεπτομέρειες βιβλιογραφικής εγγραφής
| Τίτλος: |
Crashworthiness Analysis of CFRP Composite Stanchion Assemblies of Single‐Frame Sections in Civil Aircraft Sub‐Cargo Structure. |
| Συγγραφείς: |
Liu, Fu, Wang, Jiulian, Mei, Chong, Xu, Gaohong, Pan, Xiong, Bai, Chunyu, Xi, Xulong |
| Πηγή: |
Polymer Composites; 9/20/2026, Vol. 47 Issue 18, p16606-16622, 17p |
| Θεματικοί όροι: |
Continuum damage mechanics, Structural components, Safety factor in engineering, Airframes, Fibrous composites |
| Περίληψη: |
To investigate how the inclination angle between the stanchion and the cargo floor beam affects the specific energy absorption (SEA) of sub‐cargo structures under vertical crash loading, vertical drop impact tests are conducted on carbon fiber reinforced polymer (CFRP) composite stanchion assemblies in single‐frame sub‐cargo sections at three angles (78°, 85°, and 90°). Crash numerical models based on the continuum damage mechanics (CDM) are developed using the PAM‐CRASH solver. The simulations accurately reproduce the double‐peak contact force‐time response observed in the experiments, as well as the velocity evolution and failure modes, thereby confirming the reliability of the models. Using the validated approach, additional simulations are performed for five inclination angles between 73° and 90° (73°, 75°, 80°, 83°, and 88°), enabling systematic evaluation of their effects on failure behavior, dynamic response, and SEA. The results show that SEA increases with inclination angle following a sigmoidal trend, characterized by gradual initial growth, a rapid rise, and eventual saturation. The fitted relationship between SEA and inclination angle provides predictive guidance for crashworthiness design of sub‐cargo structures in civil aircraft fuselages. Highlights: The designed upright crash tests better represent aircraft crash conditions.A single‐frame model isolates angle effects on energy absorption.Tests and simulations reveal failure and energy absorption mechanisms.SEA increases sigmoidally with increasing stanchion inclination angle. [ABSTRACT FROM AUTHOR] |
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| Βάση Δεδομένων: |
Complementary Index |