Only the circumferential displacement takes place只有环向位移 (b) Fig.42.1 PP"′=AA"=ue+ due/ardr BB′=ue+oued0 E=0 Eo=(PB-PB)/PB=BB" -PP//PB=ue+oue/ada)-ue Vrde)=due/roe) 徐汉忠第一版20007 弹性力学第四章徐汉忠第一版2000/7 弹性力学第四章 10 Only the circumferential displacement takes place只有环向位移 • PP=u AA=u+u / rdr BB=u+u /d • r=0 • =(PB-PB)/PB=(BB-PP)/PB =[(u+u /d)- u ]/(rd)= u /(r)