The oblique impact response of composite sandwich plates Articles uri icon

publication date

  • December 2015

start page

  • 1127

end page

  • 1136

volume

  • 133

international standard serial number (ISSN)

  • 0263-8223

electronic international standard serial number (EISSN)

  • 1879-1085

abstract

  • The following work focus on the experimental study of low-velocity oblique impact on composite sandwich plates. Several impact angles and impact energies are selected to study their influence on the maximum contact force, maximum contact time, absorbed energy, maximum displacement of the impactor, and damaged area. Peak load and energy absorption rise with increasing impact energy and impact angle, while the contact time remains almost constant. No major differences in the results are shown for impact angles lower than 15 degrees. In addition, a numerical model is developed to reproduce the experimental results and study the evolution of the main impact results for impact angles difficult to perform experimentally (up to 50 degrees). A good correlation has been found in terms of peak force and contact time, allowing further analysis of the maximum contact force at higher impact angles. Maximum contact force decreases with increasing impact angles, whereas it increases with impact energy until a certain value in which remains almost constant.

keywords

  • angle of obliquity; sandwich structures; honeycomb core; low-velocity impact; experimental test; numerical simulation