Topic
Sandwich panel
About: Sandwich panel is a research topic. Over the lifetime, 4665 publications have been published within this topic receiving 49812 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, the performance of sandwich panels with metallic face-sheets and polyvinyl chloride (PVC) foam ungraded/graded cores under air blast loading was investigated experimentally.
33 citations
TL;DR: In this article, the effect of stitching on the blast resistance of sandwich panels was investigated both experimentally and numerically, and it was shown that stitching has no obvious effect on the deformation of the sandwich structures.
33 citations
TL;DR: In this article, the macroscopic responses of carbon-fiber pyramidal truss core panel subject to uniaxial compressive loading are investigated through experimental, theoretical and finite element analysis (FEA) methods, taking account of local defect.
Abstract: In present paper, the macroscopic responses of carbon-fiber pyramidal truss core panel subject to uniaxial compressive loading are investigated through experimental, theoretical and finite element analysis (FEA) methods, taking account of local defect. The local defect is introduced in the form of missing strut for the unit cell. A theoretical model is proposed to predict the effect of defect on the compressive stiffness and ultimate strength of pyramidal truss core sandwich panel. To study the buckling and crushing behavior, a progressive damage model based on the Hashin failure criteria is implemented in ABAQUS software by means of a user subroutine VUMAT. The sensitivity of sandwich panel to the percentage of missing struts, defect type, and defect spatial configuration are respectively discussed. Comparing with the open-cell foam and honeycombs, the pyramidal truss has better defect tolerant than bending dominated construction. Moreover, the effects of defect type and defect spatial configuration on the strength of pyramidal truss panel are significant under the same percentage of missing struts. The numerical results reveal that the discrepancy can be up to 14% and 29%, respectively. The local defect should be considered in the design and application of pyramidal truss structure.
33 citations
TL;DR: The reliability and accuracy of a numerical shell model simulation and its predictive capabilities with existing failure criteria are compared to experiments of a 34-m long blade tested to ultimate failure as mentioned in this paper.
33 citations
TL;DR: The cylindrical DAA structure performed much better than its equal solid panel in both blast resistance and energy absorption capacity and can be used as a reference for different applications.
33 citations