航空学报2026，Vol.47Issue(5)：142-156,15.DOI:10.7527/S1000-6893.2025.32417
含初始脱粘损伤的复合材料加筋板压缩性能评估
Evaluation of compressive behavior in composite stiffened panels with initial debonding defects
摘要
Abstract
This study combines experimental and numerical approaches to investigate the effects of initial debonding defects at the stringer-skin interface on the compressive behavior of composite stiffened panels.Digital Image Correla-tion(DIC)and strain gauge measurements were employed to characterize the buckling and post-buckling behavior.The experimental results demonstrate that while the initial debonding has limited influence on the buckling load,it in-duces buckling mode transition during compression and causes premature interfacial failure near the pre-existing debonded region,leading to a significant reduction(up to 18.6%)in structural load-bearing capacity.An innovative cohesive zone modeling approach was developed based on an interface failure criterion that accounts for the inhibition of shear failure due to out-of-plane compressive stress,where the intact interface and pre-debonded region were simu-lated using cohesive elements with a bilinear damage constitutive model and contact constitutive model,respectively.A progressive damage finite element model was subsequently established,successfully reproducing the post-buckling failure process.The numerical predictions show excellent agreement with experimental data,with buckling load errors below 4%and failure load errors within 7%,while accurately capturing the buckling modes transition and failure pro-gression.Parametric studies were conducted to evaluate the effects of debonding size and location on the compres-sive post-buckling performance.The findings provide valuable references for damage-tolerant design of composite stiff-ened structures.关键词
复合材料/加筋板/初始脱粘缺陷/压缩/屈曲/后屈曲Key words
composite materials/stiffened panels/initial debonding defects/compression/buckling/post-buckling分类
航空航天引用本文复制引用
杨钧超,邹鹏,陈向明,李磊..含初始脱粘损伤的复合材料加筋板压缩性能评估[J].航空学报,2026,47(5):142-156,15.基金项目
强度与结构完整性全国重点实验室课题(BYST-QZSYS-24-072-3) （BYST-QZSYS-24-072-3）
民机科研项目(MJ-2015-F-038) Research Project of National Key Laboratory of Strength and Structural Integrity(BYST-QZSYS-24-072-3) （MJ-2015-F-038）
Civil Aircraft Scientific Research Project(MJ-2015-F-038) （MJ-2015-F-038）
