Fig. 8
From: Finite Element Modeling of the Cyclic Wetting Mechanism in the Active Part of Wheat Awns
a Absolute maximum radial stress σR,max as a function of total fraction of axially oriented material 
after a positive temperature step of 1 K for various in-plane elastic moduli Ep (see legend). For combinations with σR,max >0 at least one gap opens. b Minimal maximum radial stress σR,max* as a function of total fraction of axially oriented material. For combinations with σR,max* >0 all gaps open