A FAST MODEL FOR TRANSIENT NONLINEAR ELASTIC RESPONSE OF CLAMPED ISOTROPIC MATERIAL SUITABLE FOR VULNERABILITY STUDIES

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Authors
  1. Tremblay, J.E.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
DREV initiated a research project on soft-skinned vehicle protection to provide advice to the CF on ballistic protection and to develop adequate ballistic protection devices for the personnel traveling in soft-skinned vehicles. The study describes a simple analytical model needed in the aspect of the project related to the vulnerability of vehicles to dynamic loadings from air-blast and crater ejecta caused by land mines. The mode is simple and requires little computer processing. It is specially designed to get a quick and relatively accurate estimate of the deformation of rectangular plates clamped at all edges. It can easily be ported to any platform or simple be incorporated into other codes. The model has 5 degrees of freedom and is derived from a super element model from the University of British Columbia. Examples are presented and the results are shown to be similar to those from the original UBC model as well as to those from a complex hydrocode simulation. The presented dynamic model is about a thousand times faster than the hydrocode model, allowing its use in survivability optimization problems and in vulnerability codes for detailed analysis. However, the model needs to be further developed to incorporate plastic deformations and simply supported boundary conditions.
Keywords
Soft skinned vehicles;Superelement model;Clamped isotropic material;Transient nonlinear elastic response
Report Number
DREV-TM-9431 — Technical Memorandum
Date of publication
01 Feb 1995
Number of Pages
58
DSTKIM No
95-02134
CANDIS No
150296
Format(s):
Document Image stored on Optical Disk;Hardcopy

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