material TableGurson (1) (2) (3) (4) (5) (6) (7) (8) (9) [10]
# (1) int, unique material tag
# (2) double, elastic modulus
# (3) double, poisson's ratio
# (4) string, table file name
# (5) double, q1
# (6) double, q2
# (7) double, fn
# (8) double, sn
# (9) double, en
# [10] double, density, default: 0.0
