Assertion: bending stress | /r/CapableOf | try to change the bar's curvature
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Source sentences:
text: The ordinary stress is then reduced to a scalar (tension or compression of the bar), but one must take into account also a bending stress (that tries to change the bar's curvature, in some direction perpendicular to the axis) and a torsional stress (that tries to twist or un-twist it about its axis).