Karl Wieghardt (mathematician)

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Karl Wieghardt (full name: Karl Friedrich Daniel Wieghardt ; born June 21, 1874 in Bergeborbeck near Essen , † June 10, 1924 in Dresden ) was a German mathematician, physicist and professor of mechanics.

Live and act

Wieghardt studied mechanical engineering and then mathematics in Göttingen , where he received his doctorate in 1903 under Felix Klein . Following on from Maxwell's work on reciprocal figures in truss theory, Klein and Wieghardt suggested in 1904 that when determining the stress distribution of a thin elastic disk, we should look for a solution that is based on the equivalence of the states of tension of a disk with a close-meshed framework with the same edge and load - The work presented in 2015 by William F. Baker et al. is based on this method, which Wieghardt expanded in 1906 . a. for the development of design tools for flat trusses with the help of an extended Airy stress function .

In 1904 Wieghardt completed his habilitation at the TH Aachen , where he was briefly a private lecturer. Two years later he became an associate professor for technical mechanics in Braunschweig. From 1907 Wieghardt was professor for higher mathematics and mechanics at the TH Hannover , from 1911 he was professor for pure mathematics and statics at the TH Vienna and from 1920 he was professor for technical mechanics at the TH Dresden .

In 1907 he published one of the first papers on fracture mechanics. In 1912/1914 he wrote the article "Theory of Building Construction" for the Encyclopedia of Mathematical Sciences .

He was married to the children's author Auguste Lazar for the second time . His son Karl Wieghardt (1913–1996) was later a physics professor in Hamburg (author of the theoretical fluid mechanics , Teubner).

Works (selection)

  • About the statics of level trusses with slack bars. (Dissertation, Göttingen) Printed by Dieterich'schen Univ. Letterpress (WF Kaestner), Göttingen 1903, OCLC 23618701 .
  • About splitting and tearing elastic bodies. 1907.
  • Theory of Building Construction II: More specific versions. In: Encyclopedia of Mathematical Sciences. Volume IV-4, Issue 5, OCLC 25258425 .
  • About stress distributions in beams and reinforced concrete. 1908.
  • About a few simple but lesser-known sentences from the statics of trusses. 1915.
  • Beam on a flexible base. 1922.

literature

Individual evidence

  1. ^ Karl-Eugen Kurrer : The History of the Theory of Structures. Searching for Equilibrium . Ernst & Sohn , Berlin 2018, ISBN 978-3-433-03229-9 p. 851f. u. 960f.
  2. ^ Bettina Gundler : Technical University, Education, State and Economy. Olms, Hildesheim 1991, ISBN 3-487-09545-9 , p. 167.
personal data
SURNAME Wieghardt, Karl
ALTERNATIVE NAMES Wieghardt, Karl Friedrich Daniel (full name)
BRIEF DESCRIPTION German mathematician
DATE OF BIRTH June 21, 1874
PLACE OF BIRTH Bergeborbeck
DATE OF DEATH June 10, 1924
Place of death Dresden