Rho 2400[kg/m^3] 密度
Nu 0.25 "泊松比"
Eiref 65.488[MPa] "主载荷的参考初始刚度"
Eurref 90[MPa] "用于卸载和重新加载的参考刚度"
e0 0.65 "初始空隙比"
m 0.55 "应力指数"
rc 1.84 "膨胀到压缩比"
c 1[kPa] 内聚力
Psi 16[deg] "膨胀角"
Phi 42[deg] "内摩擦角"
Rc 0.68027 "椭圆长宽比"
p0 300[kPa] 压力
gamma_a 2e-4 "阈值剪切应变"
gammaR gamma_a/a "参考剪切应变"
E0ref 270[MPa] "参考压力的初始杨氏模量"
G0ref E0ref/(2*(1+Nu)) "参考压力的初始剪切模量"