If Mb = 0, we can compare the flexure (1.172a) with that of a long plate whose long edges are simply supported on straight lines and bent by uniform moments while the long length is kept constant (cf. Sect. 1.13.6), i.e. where the flexure is in x2 only. For a rectangular plate only submitted to the bending moments Ma and -Ma on two opposite sides, a flexure component arises in the y-direction,
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