Dynamic Characteristic of Axially Moving Soft Sandwich Beam

Abstract:

A new sandwich beam theory is proposed by introducing independent variables of the displacements of face sheets, middle plane of soft core according to the incompression in transverse direction of traditional sandwich beam theory. Based on Hamilton principal, the governing equation of the system is established. Galerkin truncation method was used to solve the governing equation. It was found that (1) the first mode of the system displays that it is consistent with the traditional sandwich beam theory; (2) the second mode of the system shows that the soft core is in the state of tension or in compression; (3) the third mode of the system displays that the upper part and lower part of soft core are in different state (tension or compression); (4) The incompressible model of sandwich beam is the special form of soft sandwich beam we establish in this paper.

• Periodical: Advanced Materials Research (Volume 702)
• Pages: 275-279
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.702.275
• Online since: May 2013
• Authors: Hai Wei Lv, Ying Hui Li, Liang Li
• Keywords: Axially Moving, Compressible Core, Dynamic Characteristic, Sandwich Beam

References

[1] Y. Frostig: Compos. Struct. Vol. 20 (1992), pp.1-16

[2] R. Li, G. A. Kardomateas and G. J. Simitses: J. Appl. Mech. Vol. 75(11) (2008), pp.061023-10

[3] A. L. Thurman and C. D. Jr. Mote: J. Appl. Mech. Vol. 36 (1969), pp.83-91

[4] H. W. Lv, Y. H. Li, Q. K. Liu and L. Li: Adv. Mater. Res. Vol. 338 (2011), pp.487-490

[5] Z. H. Li and Y. H. Li: Acta Mater. Compos. Sin. Vol. 29(3) (2012) pp.219-225

[6] Y. H. Li and Z. H. Li: Chin. Q. Mech. Vol 33(3) (2012), pp.449-455