Welfengarten 1, 30167 Hannover, Germany
Mohr studied engineering at the Polytechnic Institute of Hannover (now Leibniz University Hannover), which he entered in 1851.
Welfengarten 1, 30167 Hannover, Germany
Mohr studied engineering at the Polytechnic Institute of Hannover (now Leibniz University Hannover), which he entered in 1851.
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1906
Christian Otto Mohr was born on October 8, 1835, in Wesselburen, Schleswig-Holstein, Germany to the family of Holstein landowners Johann Jacob Mohr and Sophie Friederike Georgine Bruhn. During his father’s period of office as the local mayor, the young Otto met Friedrich Hebbel, who was later to become famous as an author but at that time was the 14-year-old scribe employed in his father’s office.
Mohr studied engineering at the Polytechnic Institute of Hannover (now Leibniz University Hannover), which he entered in 1851. One of his teachers was Schubert's pupil, Moritz Rühlmann.
After completing his studies Otto Mohr worked for Hannover State Railways and, afterwards, Oldenburg State Railways. Around 1860 he is supposed to have developed the method of sections for analyzing a statically determinate frame (attributed to August Ritter) in working on a design for the first iron bridge with a simple triangulated frame at Lüneburg.
A little later the young Mohr gained attention among his profession by publishing a paper on the consideration of displacements at the supports during the calculation of internal forces in continuous beams. But his work didn't stop there: he introduced influence lines at the same time as Winkler in 1868 and discovered the analogy since named after him, which gave graphical statics an almighty helping hand. He was appointed professor of structural mechanics, route planning and earthworks at Stuttgart Polytechnic in 1867. Six years later, Mohr accepted a post at Dresden Polytechnic as a successor to Claus Köpcke (1831-1911) and taught graphical statics plus railway and hydraulic engineering there until 1893. After the departure of Gustav Zeuner in 1894, he took on the subjects of structural mechanics and strength of materials in conjunction with graphical statics.
Mohr gave up teaching in 1900 but continued working on the development of structural mechanics and theory of structures. His work on the fundamentals of the theory of structures based on the principle of virtual forces meant that he - alongside the work of Maxwell [Maxwell, 1864/2] - made the greatest contribution to the classical theory of structures. Through his work, Mohr, like no other, provided an impetus to the classical period of the discipline-formation period and the first half of the consolidation period of structural theory.
Christian Otto Mohr was one of the most celebrated nineteenth-century engineers. Hannover Königliche Technische Hochschule awarded him a doctorate. After lengthy deliberations, Mohr accepted the post of Working Privy Counsellor with the title “Excellency”, which he had been awarded by the Saxony government. Numerous personalities from the world of science and engineering, e. g. Robert Land, Georg Christoph Mehrtens, Willy Gehler, Kurt Beyer, and Gustav Bürgermeister, were influenced by him as the founder of the Dresden school of structural mechanics. Mohr was awarded the Commander's Cross 2nd Class of the Albert Order.
Mohr argued with Müller-Breslau over the foundations of structural theory and later over priority issues regarding essential definitions, theorems and methods in the theory of structures.
Many of his students, including Föppl, described Mohr as their most remarkable teacher. He was of imposing height, proud and taciturn; his ideals in lecturing as well as in writing were simplicity, clarity, and conciseness.
Christian Otto Mohr married Anna Doris Christiane Buresch. They had a con Ernst who also became an engineer.
