7.Fl0 Now calculate M X y = 10m if the coordinate axes are placed at one corner of a 20m x 20m hull section: M X M X Recall, D{ 3.6892xl0 21 - 5.337xlo 15 D + 4.16lxlOlS EINA D M X M X Et 3 0.0916 Et3 12(1-v 2 ) = 3.6892xl0 21 - {5 . 337xlo15 + 4 . 16lxlo15 0.0916 t 3 - { 3.6892xl0 21 5.337xl0 15 + 4.5426xl0 16 INA ~ Substituting the above derived value of INA' obtain: = -{ 3.6892xlo 21 Mx S . 337xl015 + 6.Sllxl017 t The maximum stress due to bending is given by (7.F2) 6Mx 0 xmax ~
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