Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermomechanics of hydrogen storage in metallic hydrides: modeling and
  analysis   A thermodynamically consistent mathematical model for hydrogen adsorption in
metal hydrides is proposed. Beside hydrogen diffusion, the model accounts for
phase transformation accompanied by hysteresis, swelling, temperature and heat
transfer, strain, and stress. We prove existence of solutions of the ensuing
system of partial differential equations by a carefully-designed, semi-implicit
approximation scheme. A generalization for a drift-diffusion of multi-component
ionized "gas" is outlined, too.

13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph