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Experimental Study on Static and Dynamic Response of Aluminum Honeycomb Sandwich Structures
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Experimental Study on Static and Dynamic Response of Aluminum Honeycomb Sandwich Structures
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Journal Article
Experimental Study on Static and Dynamic Response of Aluminum Honeycomb Sandwich Structures
2022
Overview
Honeycomb aluminum structures are used in energy-absorbing constructions in military, automotive, aerospace and space industries. Especially, the protection against explosives in military vehicles is very important. The paper deals with the study of selected aluminum honeycomb sandwich materials subjected to static and dynamic compressive loading. The used equipment includes: static strength machine, drop hammer and Split Hopkinson Pressure Bar (SHPB). The results show the influence of applied strain rate on the strength properties, especially Plateau stress, of the tested material. In each of the discussed cases, an increase in the value of plateau stresses in the entire strain range was noted with an increase in the strain rate, with an average of 10 to 19%. This increase is mostly visible in the final phase of structure destruction, and considering the geometrical parameters of the samples, the plateau stress increase was about 0.3 MPa between samples with the smallest and largest cell size for the SHPB test and about 0.15 MPa for the drop hammer test.
Publisher
MDPI AG,MDPI
Subject
