TY  - SER
AU  - Zhang, Feng
AU  - Yashima, Atsushi
AU  - Nakai, Teruo
TI  - An Elasto-Viscoplastic Model  for  Soft Sedimentary Rock Based on Tij Concept and Subloading Yield Surface
KW  - Constitutive  Model
KW  - Creep
KW  - Soft Rock
ER  -