![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
Deformation and failure of large deflection of peripherally clamped square cellular core sandwich panels under blast loading were investigated in this paper. Tests were conducted at different levels of impulse load on the sandwich panels and solid plates with the same mass. Quantitative results were obtained based on the measurement in the tests by a ballistic pendulum with corresponding sensors, and then the deformation/failure modes of specimen were classified and analysed systematically. Experimental results show that the blast loaded metallic sandwich panels can fail in several modes: indentation and penetration failure of front face, face wrinkling, core crushing damage, large inelastic deformation and delamination between the face and the crushed foam core. Moreover, the results of the parametric study indicate that the dynamic response of sandwich panel is sensitive to its configuration and loading intensity. The results are of worth to optimum design of metallic sandwich structures.
This work is supported by the National Natural Science Foundation of China (grant nos. 90716005, 10802055 and 10972153), the Natural Science Foundation of Shanxi Province (grant no. 2007021005), Postdoctoral Science Foundation of China and Program for the Homecomings Foundation and the Top Young Academic Leaders of Higher Learning Institutions of Shanxi, China. The financial contribution is gratefully acknowledged.