Free Vibration of the Embedded Co-Cured Composite Sandwich Plate
ZHAI Yan-chun1,2 LIANG Sen2 FU Xiaojing2
1. College of Mechanical Engineering, Wei fang University of Science and Technology, Shandong Shouguang 262700,China；
2. College of Mechanical Engineering, Qingdao Technological University, Shandong Qingdao 266000,China
Abstract：Analysis of Free Vibration of thin composite sandwich plate with four simply supported edges and (0o/90o/0o) laying-up was conducted using the Navier solution based on the first-order ZIG-ZAG theory and constant complex model.On the condition that thinkness of total plate remain unchanged,nature frequency that tended to go from descent to ascent with the increase of the thickness of surface layer presented a concave parabolic distribution; loss factor that tended to go from increase to decrease with the ascent of the thickness of surface layer presented a conves parabolic distribution.So symmetrical structure sandwich plate is the optimal structure design. On the condition that thinkness and location of viscoelastic layer keep constant,the natural frequencies can be improved with the increase of thickness of surface layer; loss factor tended to go from increase to decrease with the ascent of the thickness of surface layer and presented a parabolic distribution. All of this can provide the reference for the optimal design of sandwich plate structure.
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