File:TESTING AND MODELING HIGH STRAIN RATE FAILURE IN COMPOSITE MATERIALS (IA testingandmodeli1094562710).pdf
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[edit]TESTING AND MODELING HIGH STRAIN RATE FAILURE IN COMPOSITE MATERIALS
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| Author |
Panick, Connor J. |
| Title |
TESTING AND MODELING HIGH STRAIN RATE FAILURE IN COMPOSITE MATERIALS |
| Publisher |
Monterey, CA; Naval Postgraduate School |
| Description |
The use of fiber-matrix composite materials in military ordnance casings is of increasing interest to the U.S. Navy due to the potential for such casings to reduce collateral structure damage. In order to use fiber-matrix composite materials in such an application, the high strain rate failure characteristics of said materials must be well understood and capable of finite element (FE) implementation. This study evaluated the high strain rate behavior in relation to quasi-static behavior of a supplied carbon fiber material. Material samples were provided in three distinct composite layup orientations. High strain rate testing utilized a Charpy impact tester, and slow strain rate testing used a standard tensile tester. Experimental data revealed a rate-dependent failure strain in the composite matrix material and a rate-invariant failure strain in the carbon fiber. Material property data (including high strain rate effects) were passed into an impact specimen and tensile specimen ABAQUS FE model that used a pre-defined user subroutine capable of performing damage calculations on fiber-matrix composite materials. Additional impact tests used a load cell in order to create a time-dependent input force for the FE model (unique to each composite layup). The ABAQUS FE model produced results that were in agreement with the experimentally observed changes in composite layup material properties as functions of the applied strain rate. Subjects: composite; dynamic failure modes; dynamic failure characteristics; dynamic failure modeling; high strain rate; anisotropic; ABAQUS; impact testing; fiber-matrix material; carbon fiber; finite element modeling |
| Language | English |
| Publication date | June 2019 |
| Current location |
IA Collections: navalpostgraduateschoollibrary; fedlink |
| Accession number |
testingandmodeli1094562710 |
| Source | |
| Permission (Reusing this file) |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
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| current | 03:28, 25 July 2020 |  | 1,275 × 1,650, 130 pages (5.56 MB) | Fæ (talk | contribs) | FEDLINK - United States Federal Collection testingandmodeli1094562710 (User talk:Fæ/IA books#Fork8) (batch 1993-2020 #29072) |
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