Contributions
Navier formulated the general theory of elasticity in a mathematically usable form (1821), making it available to the field of construction with sufficient accuracy for the first time. In 1819 he succeeded in determining the zero line of mechanical stress, finally correcting Galileo Galilei's incorrect results, and in 1826 he established the elastic modulus as a property of materials independent of the second moment of area. Navier is therefore often considered to be the founder of modern structural analysis.
His major contribution however remains the Navier–Stokes equations (1822), central to fluid mechanics.
His name is one of the 72 names inscribed on the Eiffel Tower.
Read more about this topic: Claude-Louis Navier