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. Author manuscript; available in PMC: 2019 May 1.
Published in final edited form as: Adv Funct Mater. 2018 Mar 30;28(20):1707107. doi: 10.1002/adfm.201707107

Figure 4.

Figure 4

Finite element analysis of gradually- and steeply graded specimens. a) 3D finite element model used in simulations. Finite element analysis of uniform or mechanically graded quarter models with gradually- and steeply graded interfaces subjected to 10 MPa tensile stress. A Poisson’s ratio of 0.3 was used for top and bottom halves of each model. b) The effect of different stiffness gradients on stress concentrations in finite element simulations. Peak values of concentrated stress not presented in color plot.