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. Author manuscript; available in PMC: 2017 Aug 23.
Published in final edited form as: Comput Methods Appl Mech Eng. 2016 Oct 14;314:196–221. doi: 10.1016/j.cma.2016.09.024

Fig. 6.

Fig. 6

Representation of the two non-smooth benchmark functions. The first (a) is expressed through the relationship (49) and has been proposed in [30], while the second (b) is expressed using (50) and proposed in [10]. For this latter function, the hypercube partition at refinement iteration 19 is also shown (c).