Erastus Lee

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Erastus Henry Lee , called Ras Lee (born February 2, 1916 in Southport , England , † May 17, 2006 in Lee ) was a British-American engineering scientist. He was a professor at Stanford University .

Life

Erastus Lee graduated from Cambridge University with a bachelor's degree in mechanics and mathematics in 1937. Charles Inglis was one of his teachers . He received a scholarship to continue his studies in New York with Stephen Timoshenko and received his doctorate there in 1940. He then worked as a British officer in New York and Washington DC, where he took care of British interests in US aircraft factories. During the war he returned to England and did research as an engineer on issues of importance to the war effort. In 1944 he became a Fellow of Gonville and Caius College, Cambridge. In 1946 he became assistant director responsible for engineering in the Department of Atomic Energy. In 1948 he became professor of applied mathematics at Brown University at the invitation of William Prager . He stayed there for fourteen years, five of which were head of the Faculty of Applied Mathematics. He had been married since 1950 and had four children. From 1962 he was a professor in the department of applied mechanics at Stanford University. There he gave lectures on continuum mechanics, viscoelasticity and plasticity theory. In 1982 he retired and was then professor at the Rensselaer Polytechnic Institute for ten years .

plant

Lee initially dealt with problems of plasticity theory in forming processes, partly with Rodney Hill . In the USA he also dealt with wave propagation in the theory of plasticity (particularly flexible elastic-plastic interfaces) and introduced the principle of correspondence into the theory of viscoelastic materials (such as polymers), which made it possible to trace back to problems of elasticity theory that were mathematically easier to deal with. In addition, the Lee decomposition in the theory of elasto-plastic material behavior is named after him.

Prices and memberships

In 1986 he received the Humboldt Research Award and in 1975 he was a Guggenheim Fellow . In 1975 he became a member of the National Academy of Engineering and in 1976 he received the Timoshenko Medal . He was a fellow of the American Academy of Mechanics and the American Society of Mechanical Engineers .

literature

  • Wei H. Yang (Ed.): Topics in Plasticity: anniversary volume in honor of Prof. EH Lee, AM Press, 1991 (on his 75th birthday)

Web links

Individual evidence

  1. ^ EH Lee Stress analysis in visco-elastic bodies , Quarterly J. Applied Math., Volume 13, 1955, pp. 183-190
  2. the multiplicative decomposition into an elastic and plastic part of the deformation gradient
  3. ^ EH Lee: Elastic-Plastic deformation at finite strains , J. Applied Mechanics, March 1969, pp. 1-6