Person Calladine; Christopher Reuben (1935-2025); engineer Calladine Christopher Reuben engineer 1935-2025 British Male Ilkeston, Derbyshire, England, United Kingdom 19 January 1935 19350119 Cambrdige, Cambridgeshire, England, United Kingdom 03 August 2025 20250803

Engineer Structural biology Structural mechanics Biophysics Materials Science Engineering Education: Nottingham High School; Peterhouse, Cambridge BA (1956); Massachusetts Institute of Technology Computation Centre, U.S.A, MA (1958) Career: Research Assistant in Structures, Massachusetts Institute of Technology Computation Centre, U.S.A (1958); University Demonstrator in the Cambridge Department of Engineering (1960); University Lectureship (1963) and Readership (1978); visiting Research Associate, Brown University (1963); Visiting Professor of Applied Mechanics, Stanford University (1969-70); Professor of Structural Mechanics, University Engineering Laboratory, Peterhouse, University of Cambridge (1986-2002); Emeritus Professor of Structural Mechanics, University Engineering Laboratory, Peterhouse, University of Cambridge (2002-2025). Memberships: Fellow of the Royal Academy of Engineering EMF Biological Research Trust Awards/Medals: James Alfred Ewing Medal, Institution of Civil Engineers 1998 Parents: Reuben and Mabel Calladine. Siblings: Anne Calladine (b. 1930). Spouse: (m. 1964) Mary R.H. Webb, who became a General Practitioner in Cambridge. Children: One daughter and two sons. Conducted significant work in several areas of structural mechanics. He made important contributions to both the elastic and plastic analysis and design of shell structures, to the prediction of the creep behaviour of structures, to the buckling of certain structures, and to the field of the mechanical properties of saturated clay soils. He clarified Maxwell's rule for the construction of rigid frameworks from rods and simple joints, and advanced methods for the design and analysis of cable net and deployable structures. He also applied his expertise to biological structures at a molecular scale, carrying out a mechanical analysis of the construction of helical bacterial flagella in terms of a ‘mechanically bistable’ subunit. produced a radical, direct explanation of the frequently overlooked empirical observation that in the axial compression of thin-walled cylindrical shells, the stress-level at which buckling occurs is proportional to the 1.5 power of thickness. The key element in this analysis is an appreciation of the role of the 'dimple' in the mechanics of thin-walled structure buckling. Royal Society roles: Council 2000-2002 Fellow 15/03/1984 49 The Royal Society Fellows Directory, Professor Christopher Calladine FREng FRS [URL: https://royalsociety.org/people/christopher-calladine-11180/; last accessed: 09/09/2025] Peterhouse University of Cambridge, Professor Christopher Calladine (1935-2025), 6 August 2025, [URL: https://www.pet.cam.ac.uk/news/professor-christopher-calladine-1935-2025; last accessed: 09/09/2025] References: Sir John Meurig Thomas, 'Peterhouse, the Royal Society and molecular biology' in NR 2000 vol 54 pp 369-385 International Standard Archival Authority Record for Corporate Bodies, Persons and Families - ISAAR(CPF) - Ottawa 1996 ISBN 0-9696035-3-3 National Council on Archives, Rules for the Construction of Personal, Place and Corporate Names, 1997 https://royalsocietypublishing.org/action/doSearch?ContribAuthorRaw=Calladine%2C+Christopher+Reuben RCN 13797 RCN 13203 RCN 13798 https://pictures.royalsociety.org/image-rs-21664 19 Jan 1935 - The past Fellows entries are under continuous revision. If you have queries or additional information to contribute, please contact Library@royalsociety.org. Content in external sources is not controlled by the Royal Society and historical sources may include content that is now unacceptable. Reviewed on 09/09/2025 as part of the Name Authority Project update. NA7878 21/11/2001 Andyg pmab 07/11/2025 RS_NET\VirginiaM Yes 7839acb2-544c-4c18-8256-15c7de1edb25