کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
830896 | 1470361 | 2012 | 8 صفحه PDF | دانلود رایگان |
When designing sandwich structures, different types of periodic cellular cores have been considered trying to achieve higher overall bending stiffness and strength to weight ratios as a main objective. Although most of them have proved to offer advantages in certain specific applications, there is a common drawback for all: complexity of the manufacturing process reflected in higher manufacturing costs. This article aims at investigating the out-of-plane shear elastic properties Gxz and Gyz of a novel cellular core named ExpaAsym, produced by a potentially simple manufacturing method: sheet material expansion. Numerical analyses are carried out in order to study the way in which the out-of-plane shear elastic properties modify in terms of several geometric parameters that define the topology of the structure. The numerical results are validated through experimental tests.
► In this study a novel type of cellular core concept is proposed.
► The out-of-plane shear elastic properties Gxz and Gyz are numerically evaluated.
► Experimental tests are conducted to validate the numerical results.
► The influence of the geometric parameters on the shear properties is studied.
► For specific geometries, increased shear stiffness may be obtained.
Journal: Materials & Design (1980-2015) - Volume 36, April 2012, Pages 679–686