The mechanical behavior of thin sandwich beams with steel faces and porous polymer core have been investigated using quasistatic four-points bending. Classic sandwich models predicting the behavior and the failure modes are improved to fit the particular configuration of the structure. Numerical simulations were set up in order to investigate damage at large strain. Macroscopic results are compared with analytical models and numerical simulations. Two numerical models of the core allowed confrontation of local behavior with experiments. Criteria for localization and damaging depending on core architecture are proposed.
Issue Section:
Technical Briefs
Keywords:
beams (structures),
bending,
continuum mechanics,
numerical analysis,
polymers,
porous materials,
sandwich structures,
steel
Topics:
Computer simulation,
Deflection,
Polymers,
Sandwich structures,
Simulation,
Steel,
Stress,
Damage,
Porosity
1.
Allen
, H. G.
, 1969, Analysis and Design of Structural Sandwich Panels
, Pergamon
, New York
.2.
Ashby
, M. F.
, Evans
, A. G.
, Fleck
, N. A.
, Gibson
, L. J.
, Hutchinson
, J. W.
, and Wadley
, H. N. G.
, 2000, Metal Foams: A Design Guide
, Butterworth Heinemann
, Oxford, UK
.3.
Zenkert
, D.
, 1997, The Handbook of Sandwich Construction
, Engineering Materials Advisory Services
, UK
.4.
Mohan
, K.
, Hon
, Y. T.
, Idapalapati
, S.
, and Seow
, H. P.
, 2005, “Failure of Sandwich Beams Consisting of Alumina Face Sheet and Aluminum Foam Core in Bending
,” Mater. Sci. Eng., A
0921-5093, 409
, pp. 292
–301
.5.
Tagarielli
, V. L.
, Fleck
, N. A.
, and Deshpande
, V. S.
, 2004, “Collapse of Clamped and Simply Supported Composite Sandwich Beams in Three-Point Bending
,” Composites, Part B
1359-8368, 35
, pp. 523
–534
.6.
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