| 论文简介 |
Regarding the composite structure firstly as a composite on the macro-scale and
then as the fiber phase and matrix phase on the meso scale, a two-scale approach is proposed to
numerically predict the strength offiber-reinforced composites. As the first step, the stress field
is calculated by combining the macro-scale and meso-scale analysis together. With the stress
field, the strength index is defined and the initial strength is then predicted. As the second step,
the damage is defined and the degradation strength is then predicted. The two-scale approach
is validated by analyzing a woven fiber reinforced composite under compression after impact
(CAI) loading. Compared with the conventional homogenization approach, the present two-
scale approach can not only calculate the stress and the damage of constituent phases on the
meso scale, but obtain well correlated CAI strengths with the experimental test. |
(创新港)
