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Abstract

In sandwich structures with soft foam core materials, the relationship between load and deflection under the load, also called contact law or indentation, plays a very important role. This work presents a combined experimental and analytical study of the contact behavior of sandwich beams with polyvinyl chloride (PVC) foam cores. The mechanical properties of the sandwich constituents were fully determined and sandwich beams, facesheet-foam and foam blocks were tested under quasi-static loading. These experimental results were used to model the load-deflection curve that includes a linear range followed by a nonlinear portion. The linear model was derived from the Winkler foundation theory and the nonlinear one was obtained by fitting experiments.

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References

1. Noor, A.K. , Burton, W.S. and Bert, C.W. (1996). Computational models for sandwich panels and shells. App. Mech. Rev., 49: 155-199.

2. Vinson, J.R. (1999). The Behavior of Sandwich Structures of Isotropic and Composite Materials. Lancaster, PA: Technomic Publishing Co., Inc.

3. Zenkert, D. (1995). An Introduction to Sandwich Construction. London: Engineering Materials Advisory Services.

4. Shuaeib, F.M. and Soden, P.D. Compos. Sci. Technol., 57: 1249-1259.

5. Soden, P.D. (1996). J. Strain Analysis, 31: 353-360.

6. Meyer-Piening, H.R. (1989). Sand. Const., I: 107-127.

7. Frostig, Y. (1993). Compos. Struct., 24: 161-169.

8. Ericsson, A. and Sankar, A.V. (1992). Sand. Const., II: 139.

9. Thomsen, O.T. (1993). Compos. Struct., 25: 511-520.

10.

10. Ferri, R. and Sankar, B.V. (1997). ASME Aerosp. Div. Publ. AD., 55: 485-490.

11.

11. Sierakowski, R.L. and Chaturvedi, S.K. (1997). Dynamic Loading and Characterization of Fiber Reinforced Composites. New York, NY: John Wiley.

12.

12. Yang, S.H. and Sun, C.T. (1982). ASTM Special Technical Publication, Composite Materials: Testing and Design. Arizona, ASTM.

13.

13. Abot, J.L. and Daniel, I.M. (2001). Proc. Am. Soc. Compos.

14.

14. Abot, J.L. and Daniel, I.M. (2001). AIAA ASME ASCE AHS Struct. Struct. Dyn. Mater. Conf. Collect. Tech. Pap.

15.

15. Abot, J.L. (2000). Fabrication, Testing and Analysis of Composite Sandwich Beams. PhD Thesis, Northwestern University.

16.

16. Abrate, S. (1996). Int. SAMPE Symp. Exhib., 41: 766-777.

17.

17. Daniel, I.M. and Abot, J.L. (2000). Compos. Sci. Technol., 60: 2455-2463.

18.

18. Gdoutos, E.E. , Daniel, I.M. , Wang, K.A. and Abot, J.L. (2001). Exp. Mech., 41: 182-189.

19.

19. Johnson, K.L. (1985). Contact Mechanics. New York, NY: Cambridge University Press.

20.

20. Hetenyi, M. (1946). Beams on elastic foundation; theory with applications in the fields of civil and mechanical engineering. Ann Arbor, MI: University of Michigan Press.

Contact Law for Composite Sandwich Beams

Abstract

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