A theoretical analysis of the dynamic response of metallic sandwich beam under impulsive loading

• Published in: European journal of mechanics, A, Solids Vol. 28; no. 5; pp. 1014 - 1025
• Main Authors: Qin, Qing Hua, Wang, T.J.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Masson SAS 01.09.2009; Elsevier
• Subjects: Beams (structural); Bending; Deflection; Dynamic response; Exact sciences and technology; Finite element method; Fundamental areas of phenomenology (including applications); Impulsive loading; Mathematical analysis; Membranes; Physics; Sandwich beam; Solid mechanics; Static elasticity (thermoelasticity...); Stretching; Structural and continuum mechanics; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...); Dynamic response; Sandwich beam; Impulsive loading; Metallic structure; Transient response; High strain; Vibration; Sandwich structure; Modeling; Finite element method; Pulse response; Membrane; Stretching; Dynamic load
• DOI: 10.1016/j.euromechsol.2009.04.002
• ISSN: 0997-7538

The objective of this paper is to analytically study the dynamic response of a fully clamped metallic sandwich beam under impulsive loading. The membrane factor method is employed to derive the solutions for large deflections and time responses of the sandwich beam, in which the interaction of bending and stretching is considered. Moreover, tighter ‘bounds’ of the solutions are obtained. It is shown that the present solutions are in good agreements with the previous finite element results and lie in the bounds of the solutions. It is clear that core strength and membrane force induced by large deflections have significant effects on the dynamic response of sandwich beam with increasing the transient deflections. The present method is efficient and simple for the dynamic response analysis of large deflections of metallic sandwich structures.