Paul M. Naghdi

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Paul Mansour Naghdi (born March 29, 1924 in Tehran , † July 9, 1994 in Berkeley ) was an Iranian-American civil engineer and mechanical engineer. He was a professor at the University of California, Berkeley .

life and work

Naghdi came to the USA in 1943 to study there. He attended Cornell University , where he made his bachelor's degree in mechanical engineering in 1946 (including hydrodynamics with Sydney Goldstein and elasticity with James N. Goodier ), and the University of Michigan , where he graduated in 1948 Master's degree. There he was a student of Stephen Timoshenko , who lectured on the theory of plates as a visiting professor in 1949. In the same year he became a US citizen. From 1949 he was an instructor at the University of Michigan, where he received his doctorate in 1950. In 1951 he became Assistant Professor, 1953 Associate Professor and in 1954 he was given a full professorship at the University of Michigan. In 1958 he became a professor at Berkeley, where he co-founded the Applied Mechanics department and was its director from 1964 to 1969. In 1963 and 1971 he was a Miller Professor at Berkeley. From 1991 he was Roscoe and Elizabeth Hughes Professor of Mechanical Engineering . In 1994 he retired and received the Berkeley Citation as the university's highest honor. In the same year he died of lung cancer.

He dealt with many areas of theoretical mechanics and continuum mechanics, especially shell theory (where he developed a general dynamic theory of the deformation of shells based on the Cosserat surface and wrote the article about plates and shells in the Handbuch der Physik in 1972 ) and plasticity theory (infinitesimal plastic deformations, which he wrote a review article about in 1960; and large deformations, working with Albert E. Green , whom he first met in 1955). He also worked on linear and non-linear elasticity theory, viscoelasticity, the theory of deformable rods, liquid jets and surfaces of liquids (which he treated according to the model of the Cosserat surface in the shell theory and applied to various hydrodynamic problems), thermomechanics, theory of mixtures, general continuum mechanics. He often worked with his friend, the British theorist Albert E. Green (e.g. in thermomechanics and the theory of mixtures), who was therefore often a visiting scientist at Berkeley.

In 1972 he chaired the ASME Committee for Applied Mechanics and in 1979/1980 the US National Committee for Theoretical and Applied Mechanics. In 1956 he received the University of Michigan Distinguished Faculty Award. In 1958 he was a Guggenheim Fellow. In 1961 he received the George Westinghouse Award from ASEE and in 1980 the Tymoshenko Medal from ASME. In 1983 he became an honorary member of ASME. In 1984 he became a Fellow of the National Academy of Engineering . In 1986 he received the Eringen Medal. He received honorary doctorates from the Catholic University of Leuven (1992) and the National University of Ireland (1987).

He was married and had a son and two daughters.

Fonts

  • Foundations of elastic shell theory, in Ian Sneddon , Rodney Hill (Eds.) Progress in solid mechanics, Volume 4, 1963, North Holland, pp. 1-90
  • The theory of shells and plates, in Clifford Truesdell (ed.) Mechanics of Solids II , Handbuch der Physik (editor Siegfried Flügge ), Vol. VIa / 2, Springer Verlag 1972, pp. 425-640

literature

  • James Casey, Marcel J. Crochet (Editor) Theoretical, Experimental, and Numerical Contributions to the Mechanics of Fluids and Solids-A Collection of Papers in Honor of Paul M. Naghd , Zeitschrift für Angewandte Mathematik und Physik (ZAMP), Volume 46 Special Issue, 1995, with biography on S3-S47 and list of publications
  • Karl-Eugen Kurrer : The History of the Theory of Structures. Searching for Equilibrium , Ernst & Sohn 2018, p. 1037f (biography), ISBN 978-3-433-03229-9

Web links

Individual evidence

  1. ↑ Naghdi, AE Green, WL Wainwright A general theory of a Cosserat surface , Archive for Rational Mechanics and Analysis, Volume 20, 1965, pp. 287-308. The Cosserat surface is a deformable surface in three-dimensional Euclidean space with deformable additional vectors (length-invariant under rigid body movements), so-called directors. It is named after the Cosserat brothers (1909) and was previously treated by Jerald L. Ericksen and Clifford Truesdell (1958).
  2. ↑ Naghdi Stress-strain relations in plasticity and thermoplasticity , in EH Lee, PS Symonds Proc. 2nd Symposium on Naval Structural Mechanics (Brown University 1960), Pergamon Press 1960, pp. 121-169
  3. ↑ He also wrote its history: Naghdi A brief history of the applied mechanics division of ASME , Journal of Applied Mechanics, Volume 46, 1979, pp. 721-749
personal data
SURNAME Naghdi, Paul M.
ALTERNATIVE NAMES Naghdi, Paul Mansour
BRIEF DESCRIPTION Iranian-American mechanical engineer
DATE OF BIRTH March 29, 1924
PLACE OF BIRTH Tehran
DATE OF DEATH July 9, 1994
Place of death Berkeley