Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Micromechanical model for sintering and damage in viscoelastic porous
  ice and snow. Part I: Theory   Ice and snow have sometime been classified as a viscoelastic or viscoplastic
mate- rial according to temperature, strain rate, pressure and time scale.
Throughout experimental studies presented in the literature, it has been
observed that at very low temperatures or high strain rate, porous ice and snow
exhibit brittle behavior, but experience high viscous and plastic flow at
temperatures closed to the melting point and low rates. At the macroscopic
level nonlinearity is not necessarily attributed to material level permanent
changes or yielding but mainly to micro cracks, porosity collapse and crack
propagation. This paper attempts to address this complex behavior with a full
microstructure based model.

7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph