비의류제품

Impact behavior of laminated composites: physical basis for finite element analysis

  • 출판일1999.04
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 484
The aim of this paper is to present a method for taking into account, in numerical terms, the physics of damage events occurring during impact of composite structures and considering both the constraints of the explicit 3D finite-element analysis (especially the stability condition which links time and spatial discretisation) and the lack of local observations during impact. An explicit finite-element code is used to model the dynamic characteristic of the impact loading. We present two approaches for the modeling of damage phenomena: (1) averaging models and the contact technique, (2) simple criteria for determining damage initiation and growth. The latter approach is applied here to the impact loading of symmetric 10-ply glass/epoxy 0/90 laminated plates. In this case matrix cracking controls delamination and hence is considered to be of primary importance.
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