Material Model for Creep-Assisted Microcracking Applied to S2 Sea Ice Academic Article uri icon


  • A material model is presented that includes the following deformation mechanisms: the instantaneous response of ice due to distortion of crystal lattices, creep, the formation of microcrack nuclei due to creep, the formation of microcracks, and deformation due to microcracks. The new material model has a strict foundation on deformation mechanisms. This constitutive equation was applied to sea ice for engineering applications through implementation in the Abaqus explicit code by writing a VUMAT subroutine. The computed results show that the model correctly predicts the uniaxial tensile and the uniaxial compressive strengths of ice. The computed compressive strength versus strain-rate relation takes an almost linear relation when expressed in the loglog coordinates, which fits well with the data obtained from the literature. The material model shows the HallPetch type of strength dependency on the grain size.

published proceedings


author list (cited authors)

  • Santaoja, K., & Reddy, J. N.

citation count

  • 1

complete list of authors

  • Santaoja, Kari||Reddy, JN

publication date

  • August 2016