Studied from its original page
Three-circle Mohr diagram
Mohr's circles for a three-dimensional stress state · Hauptkreise · the arc triangles between the principal circles
- Made by
- Christian Otto Mohr
- Year
- 1882
- Field
- Engineering
- Kind
- Computing chart
- Room
- Charts that compute
See the original page — Abb. 9, printed p. 197 (leaf n211); Abb. 8 on p. 195 (leaf n209, https://archive.org/download/abhandlungenaus00mohrgoog/page/n209_w2000.jpg)
Published 1906 (A) and Mohr died in 1918, so life+70 ended in 1988 (B).
The data it needs
σ₁, σ₂, σ₃value (ordered) · quantitative · stressplane orientationinput, only to locate one plane's point · angles to two principal axes · degree
Built in 6 steps, as its maker described
Abhandlung V ('Welche Umstände bedingen die Elastizitätsgrenze und den Bruch eines Materials?', pp. 187–211), §6 'Die vollständige graphische Darstellung des Spannungszustandes eines Körperpunktes', pp. 195–197 (p. 195 = leaf n209, p. 196 = n210, p. 197 = n211); Abb. 8 on p. 195, Abb. 9 on p. 197
17 other forms share this skeleton
Source
Mohr 1882, collected in Abhandlungen aus dem Gebiete der technischen Mechanik
Attribution less certain: contested, or no single inventor recorded