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论文类型：期刊论文
发表时间：2020-01-01
发表刊物：THIN-WALLED STRUCTURES
收录刊物：EI、SCIE
卷号：146
ISSN号：0263-8231
关键字：Honeycomb structure; Equivalent method; Embedded part; Digital image correlation; Finite element method
摘要：The deformation and failure behavior of a regular hexagonal honeycomb sandwich structure with an embedded part under axial pullout loading are studied. The deformation process of the honeycomb sandwich structure was recorded using a noncontact full-field optical measurement method based on three-dimensional digital image correlation. A corresponding finite element numerical model of the honeycomb sandwich structure with embedded parts is established. A cohesive zone model is used to simulate the interface failure of the honeycomb sandwich structure with the embedded part. The four groups of interface parameters were characterized by standard testing procedures including the flatwise tensile test, single-lap test, double cantilever beam test and three-point bending test. The numerical results accurately predicted the ultimate load of the structure. The failure process and failure mechanism of the honeycomb sandwich structure with the embedded part are obtained. The combination of an experiment and numerical methods effectively revealed the deformation and failure behavior of honeycomb sandwich structures with an embedded part under axial pullout loading.