Daniel Drucker

from Wikipedia, the free encyclopedia

Daniel Charles Drucker (born June 3, 1918 in New York City , † September 1, 2001 in Gainesville , Florida ) was an American engineer who is known for contributions to plasticity theory and stress optics.


Drucker studied civil engineering at Columbia University and received his PhD in stress optics under Raymond D. Mindlin in 1940 . He then taught at Cornell University until 1943 , before moving to the Armor Research Foundation (at the Illinois Institute of Technology ) and serving in the US Air Force during World War II . From 1947 he was at Brown University , where he partially carried out his fundamental work on plasticity theory with the local professor William Prager . From 1968 he was Dean of Engineering at the University of Illinois . From 1984 he was a professor at the University of Florida , where he retired in 1994.

In the theory of plasticity, the Drucker-Prager model and the Drucker stability postulate are named after him. He applied the theory of plasticity to both metals and soil mechanics, also collaborating with David Henkel in the interpretation of his fundamental triaxial experiments on clay.

He was President of the American Academy of Mechanics (AAM) in 1981/2 and also President of the International Union of Theoretical and Applied Mechanics, the American Society of Mechanical Engineers (ASME), the Society for Experimental Mechanics (SEM), and the American Society for Engineering Education (ASEE). He received the von Karman Medal from the American Society of Civil Engineers (ASCE). In 1988 he received the National Medal of Science , the Tymoshenko Medal from ASME, the Egleston and Ilig Medal from Columbia University, and in 1983 he received the first William Prager Medal . He has received multiple honorary doctorates, including from Brown University, the Technion , the University of Illinois at Urbana-Champaign. Drucker was a member of the American Academy of Arts and Sciences (1955), the National Academy of Engineering and a foreign member of the Polish Academy of Sciences . He was an honorary member of ASME and SEM.

He was editor of the Journal of Applied Mechanics for twelve years.

He was married to Ann Bodlin from 1939 until her death in 2000, with whom he had a son and a daughter.

Daniel C. Drucker Medal

The Daniel C. Drucker Medal has been awarded by ASME in his honor since 1998.


Web links

Individual evidence

  1. ^ Drucker, Mindlin Stress analysis by three-dimensional photoelastic methods , J. appl. Phys., Volume 11, 1940, p. 724. Printer Photoelastic separation of principal stresses by oblique incidence , J. Appl. Mech., Trans. ASME, Vol. 10, 1943, A 156, Drucker The method of oblique incidence in photoelasticity , SESA Proceedings, 1950
  2. ^ Printer-Prager model
  3. ^ Drucker, Prager Soil mechanics and plastic analysis for limit design , Quarterly J.appl.Math., Volume 10, 1953, pp. 157-165
  4. Printer Stability, Lecture at Brown University ( Memento of the original from March 17, 2008 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.engin.brown.edu
  5. ^ Drucker A definition of stable inelastic material , Trans. ASME J. Appl. Mech., Vol. 26, 1959, pp. 101-106. On the postulate of stability of materials in the mechanics of continua , J. de Mecanique, Volume 3, 1964, pp. 235-249
  6. ^ Drucker, Robert Gibson , Henkel Soil mechanics and work hardening theories of plasticity , Transactions ASCE, Vol. 122, 1957, pp. 338-346
  7. ^ Formerly Society for Experimental Stress Analysis, SESA
  8. Official website