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| Effect of Stiffeners on the Buckling Performance of Composite Rear Pressure Bulkhead for Civil Aircraft |
| LI Zhongyang, LI Dong, GUO Xiang |
| (First Aircraft Institute of AVIC, Xi’an 710089, China) |
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Abstract In this paper, the research on structure buckling performance due to stiffeners on the composite domed rear
pressure bulkhead of civil aircraft is carried out. The dome skin adopts the CFRP laminate and the stiffeners are hat shape
stiffeners with PMI foam core. According to establish two categories of structure with and without stiffeners, the static and
buckling analyses by using of finite element analysis are carried out. The results show that the stiffeners on the composite
domed rear pressure bulkhead have a positive influence on improving the buckling performance and stability of the structure,
but the stiffeners contribute less on the improvement of static strength of rear pressure bulkhead. The strain and deflection
of the rear pressure bulkhead are improved slightly. So it makes no sense to increase the stiffeners on the domed rear
pressure bulkhead from the perspective of cost saving and manufacturing.
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2016, 
