材料力学(英文版)Chap1

Normal Stress

TensileNormalForce

N

ImaginaryCut

TensileNormalStress

σavg

ChandelierWeight

ChandelierWeightBuildingWeight

BuildingWeight

ImaginaryCut

NNN

σavgσavgσavg

CompressiveNormalForce

CompressiveNormalStre

σav=N A

All internal forces (and moments) in the book are in bold italics Normal stress that pulls the surface away from the body is called a ten-sile stress.

Normal stress that pushes the surface into the body is called a com-pressive stress.

The normal stress acting in the direction of the axis of a slender mem-ber (rods, cables, bars, columns, etc.) is called the axial stress. The compressive normal stress that is produced when one surface presses against other is called the bearing stress.

Printed from: http://www.me.mtu.edu/~mavable/MoM2nd.htm