Axial loadinginjury

Axial loadingspine

Stress analysis very near to the point of application of load \( P \). Saint-Venant's principle: the stress and strain produced at points in a body sufficiently removed* from the region of external load application will be the same as the stress and strain produced by any other applied external loading that has the same statically equivalent resultant and is applied to the body within the same region.

Axial loadingmedical

The stress concentration factor is the highest at lowest cross-sectional area. Stress concentration factor. $$ K = \frac{\sigma_{max}}{\sigma_{avg}}\ $$

\( \delta_T \) , \( \varepsilon_T \) present in addition to elastic \( \delta_E \) , \( \varepsilon_E \) (from internal forces). Superposition (small strains): Total strain. $$ \varepsilon_{tot} = \varepsilon_{E} + \varepsilon_{T}\ $$ Total displacement. $$ \delta_{tot} = \delta_{E} + \delta_{T}\ $$