复合材料科学与工程Issue(4)：63-71,9.DOI:10.19936/j.cnki.2096-8000.20260428.008
复合材料泡沫夹层结构非穿透损伤修理的四点弯曲性能研究
Study on four-point bending performance of bonded repairs in composite foam sandwich structures with non-penetrating damage
刘国春 1沈赫 1孙华伟1
作者信息
- 1. 中国民用航空飞行学院 航空工程学院,成都 641450
- 折叠
摘要
Abstract
This study investigates the flexural mechanical properties of repaired composite foam sandwich struc-tures with non-penetrating damage.Mechanical performance tests were conducted on composite panels and foam cores,and a high-fidelity finite element analysis model for sandwich structures was established incorporating the 3D Hashin failure criterion,Crushable Foam plasticity model,and B-K adhesive failure criterion.Four-point bending performance tests were performed on repaired structures with non-penetrating damage.The damage evolution and fail-ure mechanisms of the repaired structures under bending loads were systematically investigated through the integration of finite element analysis and experimental results.Parameter optimization of additional repair plies was accomplished based on the high-precision finite element model.The results indicate that the proposed model integrating three fail-ure criteria for laminates,foam cores,and adhesive layers demonstrates high computational accuracy,with deviations of 4.15%in flexural strength and 2.07%in flexural stiffness compared to experimental averages.Both finite element analysis and experimental verification effectively reveal the damage propagation path and failure modes of repaired structures under bending loads.The optimized repair scheme achieved 90.68%strength recovery rate,demonstrating significant engineering applicability.关键词
泡沫夹层结构/四点弯曲/有限元分析/渐进损伤/胶接修理/复合材料Key words
foam sandwich structure/four-point bending/finite element analysis/progressive damage analysis/adhesive repair/composites分类
通用工业技术引用本文复制引用
刘国春,沈赫,孙华伟..复合材料泡沫夹层结构非穿透损伤修理的四点弯曲性能研究[J].复合材料科学与工程,2026,(4):63-71,9.
