Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evaluation of coefficient of friction in bulk metal forming   In this study an upper bound analysis for cylindrical "Barrel Compression
Test" (BCT) is developed. BCT method is a very simple method which can be
utilized in order to evaluate quantitatively the coefficient of friction by
means of just one cylindrical specimen in an upsetting test. The method is
checked by a series of finite element method (FEM) simulations and by means of
the results of FEM simulations the method is modified.

12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th