Модуль упругости
F = F 0 + k 1 (V-V 0 ) + ½ k 2 (V-V 0 ) 2 B = V 2 F / V 2 B = k 2 F = E 0 + a V + b V 2 F / V = 0| V=V 0 V 0 =-a / 2b 2 F / V 2 = 2b V 0 2 F / V 2 = - a
= 84.5 B = V 2 F / V 2 B = 2 k 2 F = E 0 + a V + b V 2 F / V = 0| V=V 0 V 0 =-a / 2b 2 F / V 2 = 2b V 0 2 F / V 2 = - a