Person: SaintVenant, Jean Claude
Jean Claude SaintVenant worked mainly on mechanics, elasticity, hydrostatics and hydrodynamics.
Mathematical Profile (Excerpt):
 For the first seven of these 27 years SaintVenant worked for the Service des Poudres et Salpêtres, then he spent the next twenty years working for the Service des Ponts et Chaussées.
 SaintVenant attended lectures at the Collège de France and the lecture notes he took in Liouville's 183940 class still survive.
 SaintVenant worked mainly on mechanics, elasticity, hydrostatics and hydrodynamics.
 SaintVenant got it right and recorded it.
 We should remark that Stokes, like SaintVenant, correctly derived the NavierStokes equations but he published the results two years after SaintVenant.
 SaintVenant developed a vector calculus similar to that of Grassmann which he published in 1845.
 Grassmann had published his results in 1844, but SaintVenant claimed (and there is little reason to doubt him) that he had first developed these ideas in 1832.
 In the book "Principes de mécanique fondés sur la cinématique" SaintVenant, a convinced atomist, presented forces as divorced from the metaphysical concept of cause and from the physiological concept of muscular effort, both of which, in his opinion, obscured force as a kinematic concept accessible to the calculus.
 In the 1850s SaintVenant derived solutions for the torsion of noncircular cylinders.
 In 1868 SaintVenant was elected to succeed Poncelet in the mechanics section of the Académie des Sciences.
 At age 86 he translated (with A Flamant) Clebsch's work on elasticity into French and published it as Théorie de l'élasticité des corps solides Ⓣ(Theory of the elasticity of solids) and SaintVenant added notes to the text which he wrote himself.
Born 23 August 1797, VilliersenBière, SeineetMarne, France. Died 6 January 1886, St Ouen, LoiretCher, France.
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Tags relevant for this person:
Algebra
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References
Adapted from other CC BYSA 4.0 Sources:
 O’Connor, John J; Robertson, Edmund F: MacTutor History of Mathematics Archive