Experimental and numerical study on the modal characteristics of hybrid carbon fiber composite foam filled corrugated sandwich cylindrical panels. (July 2018)

• Record Type: Journal Article
• Authors: Yang, Jin-Shui; Ma, Li; Schröder, Kai-Uwe; Chen, Yun-Long; Li, Shuang; Wu, Lin-Zhi; Schmidt, Rüdiger
• Is Part Of: Polymer testing. Volume 68(2018)
• Page Start: 8
• Page End: 18
• Publication Date: 2018-07
• Subjects: Composite -- Corrugated sandwich -- Vibration -- Damping -- Finite element analysis (FEA); Polymers -- Testing -- Periodicals; Polymères -- Tests -- Périodiques; 620.1920287
• DOI: 10.1016/j.polymertesting.2018.03.040
• Languages: English
• ISSNs: 0142-9418

Abstract

Abstract: To further improve the vibration damping behavior of carbon fiber composite sandwich structures without too much redundant weight, empty and foam filled corrugated sandwich cylindrical panels (CSCPs) are designed and their corresponding modal characteristics are investigated experimentally and numerically. Axial and circular CSCPs (ACSCPs and CCSCPs) are simultaneously manufactured by a hot press moulding and post-assembly approach. It has been demonstrated that foam filled CSCPs can obviously improve the structural damping compared to the empty CSCPs without significant change of the corresponding natural frequencies. Furthermore, validated finite element analysis (FEA) models are adopted to systematically study the effects of the corrugated inclination angle, sandwich core thickness, arc-length and topological corrugated configurations on the modal properties. Several conclusions are drawn, which may be useful for the multifunctional design of such kinds of composite sandwich structures. Highlights: Hybrid carbon fiber composite foam filled corrugated sandwich cylindrical panels (CSCPs) are fabricated. Modal tests are conducted to investigate the vibration and damping characteristics of the hybrid composite CSCPs. The effect of geometries and configurations of CSCPs on the modal properties are investigated. Foam filled CSCPs can improve the structural damping without significant change of the corresponding natural frequencies. Axial CSCPs have higher natural frequencies and more sensitive to the face-sheet thickness compared to circular CSCPs.