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: Stress refers to internal forces per unit area, while strain is the resulting relative displacement or deformation.
Elasticity: Theory, Applications, and Numerics - Martin H. Sadd
Elasticity theory is critical across various industries to ensure the safety, stability, and durability of structures and components.
: Linear elasticity assumes small strains and a constant proportionality. Nonlinear elasticity accounts for larger deformations or complex material behaviors where the relationship becomes more intricate. 2. Applications