1.中国民航大学 科技创新研究院,天津 300300
2.中国民航大学 安全科学与工程学院,天津 300300
3.中国民航大学 航空工程学院,天津 300300
XIE Jiang, E-mail: xiejiang5@126.com
收稿:2024-10-22,
修回:2025-01-08,
网络首发:2026-07-17,
纸质出版:2026-07-15
移动端阅览
解江,程斯午未,何俊龙,等. 不同应急着陆姿态下典型翼身融合机体坠撞响应分析[J]. 机械强度,2026,48(7):166-175.
Xie Jiang,Cheng Siwuwei,He Junlong,et al. Analysis of crash response of a typical blended wing body aircraft under various emergency landing attitudes[J]. Journal of Mechanical Strength,2026,48(7):166-175.
解江,程斯午未,何俊龙,等. 不同应急着陆姿态下典型翼身融合机体坠撞响应分析[J]. 机械强度,2026,48(7):166-175. DOI: 10.16579/j.issn.1001.9669.2026.07.019.
Xie Jiang,Cheng Siwuwei,He Junlong,et al. Analysis of crash response of a typical blended wing body aircraft under various emergency landing attitudes[J]. Journal of Mechanical Strength,2026,48(7):166-175. DOI: 10.16579/j.issn.1001.9669.2026.07.019.
目的
2
为了研究不同应急着陆姿态下翼身融合民机结构响应,建立了全尺寸翼身融合飞机有限元模型,该模型涵盖了飞机主要的结构组件,包括隔框、长桁、货舱地板、客舱地板、立柱和机身肋板等。
方法
2
在0°、+3°、+6°、+9°以及+12°俯仰角工况下进行了数值模拟研究,重点分析了不同工况下客舱空间保持情况、座椅导轨处的加速度载荷以及主要承力结构的冲击特性。
结果
2
结果表明,升力体机身在不同工况下客舱区域均基本保持完整,可生存空间得到保持;翼身融合构型民机在坠撞时产生的加速度载荷较高,坠撞姿态对于乘员受载有着显著的影响,尾部非增压区域先触地能够有效减轻乘客在坠撞事件中所承受的加速度载荷,靠近中央过道处的加速度载荷要大于机身两侧;结构吸能方面,隔框的吸能占比最高,其次是货舱地板及其支撑件。
Objective
2
In order to investigate the structural response of a blended-wing-body aircraft under various emergency landing attitudes
a full-scale finite element model of the BWB aircraft was established
encompassing the main structural components of the aircraft
including frames
stringers
cargo floor
cabin floor
support column
and fuselage ribs
among others.
Methods
2
Numerical simulation studies were conducted under pitch attitudes of 0°
+3°
+6°
+9°
and +12°
with a focus on analyzing the preservation of cabin space
acceleration loads at the seat track locations
and the impact characteristics of the main load-bearing structures under different conditions.
Results
2
The results indicate that the cabin area of the lifting body fuselage remains essentially intact under various conditions
with the survivable space maintained; the blended-wing-body configuration aircraft generates higher acceleration loads during crashes
and the crash attitude significantly affects the loads experienced by occupants. Touching down first in the non-pressurized tail area can effectively reduce the acceleration loads experienced by passengers during a crash event. Acceleration loads near the central aisle are greater than those on the sides of the fuselage. In the field of structural energy absorption
the frame is the primary energy-absorbing structure
followed by the cargo floor and its supporting components.
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