Solid mechanics is the branch of mechanics , physics , and mathematics that concerns the behavior of solid matter under external actions -LRB- e.g. , external forces , temperature changes , applied displacements , etc. -RRB- .

Solid mechanics is the branch of mechanics , physics , and mathematics that concerns itself with how solid matter under external actions works -LRB- such as external forces , temperature changes , applied displacements , etc. -RRB- .
