  In the present work we introduce a novel graded-material design based on
phase-field and topology optimization. The main novelty of this work comes from
the introduction of an additional phase-field variable in the classical
single-material phase-field topology optimization algorithm. This new variable
is used to grade the material properties in a continuous fashion. Two different
numerical examples are discussed, in both of them we perform sensitivity
studies to asses the effects of different model parameters onto the resulting
structure. From the presented results we can observe that the proposed
algorithm adds additional freedom in the design, exploiting the higher
flexibility coming from additive manufacturing technology.
