Imperial College London researchers develop topology optimization framework for nonlinear mechanical metamaterials

• Researchers at Imperial College London have developed a computational framework for the inverse design of nonlinear mechanical metamaterials, using topology optimization to generate microscale unit cells from prescribed homogenized stress–strain targets. Published in Advanced Engineering Materials, the study was authored by Charlie Aveline, Matthew Santer, and Robert Hewson from Imperial College London’s Department of Aeronautics.…

Researchers at Imperial College London have developed a computational framework for the inverse design of nonlinear mechanical metamaterials, using topology optimization to generate microscale unit cells from prescribed homogenized stress–strain targets. Published in Advanced Engineering Materials, the study was authored by Charlie Aveline, Matthew Santer, and Robert Hewson from Imperial College London’s Department of Aeronautics. The framework incorporates internal contact, snap-through buckling, and bistability in a single workflow, allowing designers to synthesize unit cells with complex mechanical responses without starting from predefined unit cell geometries or machine learning datasets. The authors state that the approach could support the development of mechanical metamaterials f