Research in mechanics of solids mainly includes fundamental theory (elasticity ... alloys with enhanced corrosion and mechanical properties, deformation twinning in hexagonal close packed materials, ...
Deformation theory and convexity are critical areas of study in solid mechanics, focusing on how materials deform under various forces and the mathematical properties that govern these behaviors.
An enormous variety of ``visco-elastic'' fluids exist that obey more complicated constitutive relationships, such as nonlinear relationships, similar to plastic deformation of solids, or history ...