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Recent advances in additive manufacturing technologies have simplified the implementation of lattice structures for different applications. Consequently, FEA packages are moving in the direction of incorporating lattice structure optimization as standard design tools. In this work, we evaluate two lattice structure design methodologies; a continuum-based analytical model vs. a numerical technique implemented in Altair HyperWorks. Comparison samples are verified using FEA and further validated using 3D printing and mechanical testing. FEA results showed comparable performance of the analytical vs. numerical models, but experimental validation showed some discrepancies attributed to the manufacturing method rather than the design process itself.

An experimental investigation of analytical vs. numerical lattice structure design tools