释义 |
section modulus section modulus[′sek·shən ′mäj·ə·ləs] (mechanics) The ratio of the moment of inertia of the cross section of a beam undergoing flexure to the greatest distance of an element of the beam from the neutral axis. section modulusThe moment of inertia of the area of the cross section of a structural member divided by the distance from the center of gravity to the farthest point of the section; a measure of the flexural strength of the beam. |