TY - JOUR
T1 - Mean in-plane plateau stresses of hexagonal honeycomb cores under impact loadings
AU - Deqiang, Sun
AU - Weihong, Zhang
PY - 2009/11
Y1 - 2009/11
N2 - Double-walled hexagonal honeycomb cores (DHHCs) are important cushioning materials and their configuration parameters and impact velocities have effects on their impact properties. In this paper, the finite element (FE) model by using ANSYS/LS-DYNA was to investigate the relations between configuration parameters of DHHCs and their mean in-plane plateau stresses at impact velocities from 3 to 250 m/s. When all configuration parameters are kept constant, mean in-plane dynamic plateau stresses are proportional to the square of impact velocities. For the given impact velocity, mean in-plane dynamic plateau stresses are related to the ratios between cell wall thicknesses and cell edge length by power laws, to cell edge length ratios by exponential laws and to expanding angels by conic curves. Based on the FE calculated results, many empirical formulas and a feasible method to be used to calculate mean in-plane dynamic and static plateau stresses of DHHCs are suggested. Crown
AB - Double-walled hexagonal honeycomb cores (DHHCs) are important cushioning materials and their configuration parameters and impact velocities have effects on their impact properties. In this paper, the finite element (FE) model by using ANSYS/LS-DYNA was to investigate the relations between configuration parameters of DHHCs and their mean in-plane plateau stresses at impact velocities from 3 to 250 m/s. When all configuration parameters are kept constant, mean in-plane dynamic plateau stresses are proportional to the square of impact velocities. For the given impact velocity, mean in-plane dynamic plateau stresses are related to the ratios between cell wall thicknesses and cell edge length by power laws, to cell edge length ratios by exponential laws and to expanding angels by conic curves. Based on the FE calculated results, many empirical formulas and a feasible method to be used to calculate mean in-plane dynamic and static plateau stresses of DHHCs are suggested. Crown
KW - Double-walled hexagonal honeycomb cores
KW - In-plane impact properties
KW - Mean in-plane dynamic plateau stress
KW - Mean in-plane quasi-static plateau stress
UR - https://www.scopus.com/pages/publications/67349155541
U2 - 10.1016/j.compstruct.2009.04.045
DO - 10.1016/j.compstruct.2009.04.045
M3 - 文章
AN - SCOPUS:67349155541
SN - 0263-8223
VL - 91
SP - 168
EP - 185
JO - Composite Structures
JF - Composite Structures
IS - 2
ER -