caa a22 4500 463232658 CHVBK 20180405153247.0 cr unu---uuuuu 170326e20071101xx s 000 0 eng 10.1007/s10853-007-1936-8 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1936-8 The structural efficiency of orthotropic stalks, stems and tubes [Elektronische Daten] [Ulrike Wegst, Michael Ashby] An optimised structure is one which uses the smallest quantity of the best material to perform its function, with adequate safety factor or margin for error. Structural optimisation occurs not only in mechanical engineering, but also in nature: plants with hollow stems or stalks gain a height advantage, and are thus more efficient, by approaching the optimum shape. Here we consider the optimisation of orthotropic tubes, typifying, in a mechanical sense, stalk and stem. The stiffness and strength of orthotropic tubes of initially circular section are reviewed, and diagrams are proposed which allow the optimum section shape to be selected. Springer Science+Business Media, LLC, 2007 Wegst Ulrike Department of Materials Science and Engineering, Drexel University, 3141 Chestnut Street, 19104, Philadelphia, PA, USA aut Ashby Michael Department of Engineering, Cambridge University, Trumpington Street, CB2 1PZ, Cambridge, UK aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/21(2007-11-01), 9005-9014 0022-2461 42:21<9005 2007 42 10853 https://doi.org/10.1007/s10853-007-1936-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1936-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wegst Ulrike Department of Materials Science and Engineering, Drexel University, 3141 Chestnut Street, 19104, Philadelphia, PA, USA aut NATIONALLICENCE 700 1- Ashby Michael Department of Engineering, Cambridge University, Trumpington Street, CB2 1PZ, Cambridge, UK aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/21(2007-11-01), 9005-9014 0022-2461 42:21<9005 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer