Open AccessDynamic effects of low-velocity impact on composite plates
Author(s) -
R Wang,
D D Chen,
Meng Zhu,
Shengtao Xing
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/657/1/012058
Subject(s) - indentation , composite number , kinetic energy , displacement (psychology) , dynamic stress , enhanced data rates for gsm evolution , materials science , stress wave , impact energy , mechanics , group velocity , structural engineering , dynamic loading , composite material , engineering , physics , optics , classical mechanics , psychology , telecommunications , psychotherapist
In low-velocity impact research on composites, quasi-static indentation experiments are typically used to make inner fractures. However, dynamic effects caused by impacts cannot be studied by quasi-static experiments. In this paper, the dynamic effects are discussed using simulation. Low-velocity impact processes were simulated through ABAQUS/Explicit software. Quasi-static processes were also simulated with ABAQUS/Explicit, in which very-low-speed displacement loadings were adopted to ensure that the kinetic energy could be ignored. The results show nearly no dynamic effect in the thickness direction, due to the thin nature of the composite plate and high-stress wave velocity in the through-the-thickness direction. In the radial direction, in contrast, apparent dynamic effects are observed, although the associated stress wave velocity is much higher. This may be attributed to the wave propagation from the impact site to the edge of the plate, reflecting repeatedly between the top and bottom surfaces of the plate.