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Yield surfaces for solid foams: A review on experimental characterization and modeling
Author(s) -
Jung A.,
Diebels S.
Publication year - 2018
Publication title -
gamm‐mitteilungen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.239
H-Index - 18
eISSN - 1522-2608
pISSN - 0936-7195
DOI - 10.1002/gamm.201800002
Subject(s) - yield (engineering) , materials science , yield surface , characterization (materials science) , composite material , aluminium , automotive industry , aerospace , structural engineering , finite element method , nanotechnology , aerospace engineering , engineering , constitutive equation
Solid foams are a very important class of lightweight materials with energy absorption properties for application in automotive and aerospace industry. In such applications, foams are subjected not only to uniaxial but in most cases to very complex multiaxial stress states. Hence, yield surfaces are needed for the reliable prediction of the failure behavior by simulations under multiaxial loading. As multiaxial loading of cellular solids is a very challenging task, in literature, yield surfaces are usually based mainly on simulation results not validated by real experimental data sets. The present contribution starts with a review of the theory of yield surfaces and numerical models. It gives a deep insight into the state of the art on the experimental assessment of yield surfaces for solid foams. Finally, a yield surface and its post‐yield surfaces are determined exemplarily for open‐cell aluminum foams by using a multitude of experimental methods.