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Book Explicit Finite Element Modeling of Multilayer Composite Fabric for Gas Turbine Engine Containment Systems Part 2 Ballistic Impact Testing

Download or read book Explicit Finite Element Modeling of Multilayer Composite Fabric for Gas Turbine Engine Containment Systems Part 2 Ballistic Impact Testing written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-31 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under the Federal Aviation Administration's Airworthiness Assurance Center of Excellence and the Aircraft Catastrophic Failure Prevention Program, National Aeronautics and Space Administration Glenn Research Center collaborated with Arizona State University, Honeywell Engines, Systems and Services, and SRI International to develop improved computational models for designing fabric-based engine containment systems. In the study described in this report, ballistic impact tests were conducted on layered dry fabric rings to provide impact response data for calibrating and verifying the improved numerical models. This report provides data on projectile velocity, impact and residual energy, and fabric deformation for a number of different test conditions.Pereira, J. M. and Revilock, D. M.Glenn Research CenterCONTAINMENT; FABRICS; GAS TURBINE ENGINES; BALLISTICS; COMPOSITE MATERIALS; FINITE ELEMENT METHOD; AIRCRAFT RELIABILITY; ENGINE PARTS; IMPACT TESTS; NASA PROGRAMS; PROJECTILES; FAN BLADES; DEFORMATION; RESIDUAL STRESS

Book Explicit Finite Element Modeling of Multilayer Composite Fabric for Gas Turbine Engine Containment Systems

Download or read book Explicit Finite Element Modeling of Multilayer Composite Fabric for Gas Turbine Engine Containment Systems written by Arizona State University. Department of Civil and Environmental Engineering and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Advanced Fibrous Composite Materials for Ballistic Protection

Download or read book Advanced Fibrous Composite Materials for Ballistic Protection written by Xiaogang Chen and published by Woodhead Publishing. This book was released on 2016-01-21 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Fibrous Composite Materials for Ballistic Protection provides the latest information on ballistic protection, a topic that remains an important issue in modern times due to ever increasing threats coming from regional conflicts, terrorism, and anti-social behavior. The basic requirements for ballistic protection equipment are first and foremost, the prevention of a projectile from perforating, the reduction of blunt trauma to the human body caused by ballistic impact, the necessity that they are thermal and provide moisture comfort, and that they are lightweight and flexible to guarantee wearer’s mobility. The main aim of this book is to present some of the most recent developments in the design and engineering of woven fabrics and their use as layering materials to form composite structures for ballistic personal protection. Chapter topics include High Performance Ballistic Fibres, Ultra-High Molecular Weight Polyethylene (UHMWPE), Ballistic Damage of Hybrid Composite Materials, Analysis of Ballistic Fabrics and Layered Composite Materials, and Multi-Scale Modeling of Polymeric Composite Materials for Ballistic Protection. Contributions from leading experts in the field Cutting edge developments on the engineering of ballistic materials Comprehensive analysis of the development and uses of advanced fibrous composite materials

Book Mechanics of Fiber and Textile Reinforced Cement Composites

Download or read book Mechanics of Fiber and Textile Reinforced Cement Composites written by Barzin Mobasher and published by CRC Press. This book was released on 2011-09-20 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among all building materials, concrete is the most commonly used-and there is a staggering demand for it. However, as we strive to build taller structures with improved seismic resistance or durable pavement with an indefinite service life, we require materials with better performance than the conventional materials used today. Considering the enor

Book Departments of Transportation and Treasury and Independent Agencies Appropriations for 2004

Download or read book Departments of Transportation and Treasury and Independent Agencies Appropriations for 2004 written by United States. Congress. House. Committee on Appropriations. Subcommittee on the Departments of Transportation and Treasury, and Independent Agencies Appropriations and published by . This book was released on 2003 with total page 2158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Departments of Transportation and Treasury and Independent Agencies Appropriations for 2004 Department of Transportaion FY04 budget justifications

Download or read book Departments of Transportation and Treasury and Independent Agencies Appropriations for 2004 Department of Transportaion FY04 budget justifications written by United States. Congress. House. Committee on Appropriations. Subcommittee on the Departments of Transportation and Treasury, and Independent Agencies Appropriations and published by . This book was released on 2003 with total page 1900 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Improvements in Numerical Modeling Methodology of Dry Woven Fabrics for Aircraft Engine Containment Systems

Download or read book Improvements in Numerical Modeling Methodology of Dry Woven Fabrics for Aircraft Engine Containment Systems written by Jonathan Fein and published by . This book was released on 2012 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: Woven fabric composite materials are widely used in the construction of aircraft engine fan containment systems, mostly due to their high strength to weight ratios and ease of implementation. The development of a predictive model for fan blade containment would provide great benefit to engine manufactures in shortened development cycle time, less risk in certification and fewer dollars lost to redesign/recertification cycles. A mechanistic user-defined material model subroutine has been developed at Arizona State University (ASU) that captures the behavioral response of these fabrics, namely Kevlar® 49, under ballistic loading. Previously developed finite element models used to validate the consistency of this material model neglected the effects of the physical constraints imposed on the test setup during ballistic testing performed at NASA Glenn Research Center (NASA GRC). Part of this research was to explore the effects of these boundary conditions on the results of the numerical simulations. These effects were found to be negligible in most instances. Other material models for woven fabrics are available in the LS-DYNA finite element code. One of these models, MAT234: MAT_VISCOELASTIC_LOOSE_FABRIC (Ivanov & Tabiei, 2004) was studied and implemented in the finite element simulations of ballistic testing associated with the FAA ASU research. The results from these models are compared to results obtained from the ASU UMAT as part of this research. The results indicate an underestimation in the energy absorption characteristics of the Kevlar 49 fabric containment systems. More investigation needs to be performed in the implementation of MAT234 for Kevlar 49 fabric. Static penetrator testing of Kevlar® 49 fabric was performed at ASU in conjunction with this research. These experiments are designed to mimic the type of loading experienced during fan blade out events. The resulting experimental strains were measured using a non-contact optical strain measurement system (ARAMIS).

Book Impact Testing and Analysis of Composites for Aircraft Engine Fan Cases

Download or read book Impact Testing and Analysis of Composites for Aircraft Engine Fan Cases written by and published by . This book was released on 2001 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Elevated Temperature Ballistic Impact Testing of PBO and Kevlar Fabrics for Application in Supersonic Jet Engine Fan Containment Systems

Download or read book Elevated Temperature Ballistic Impact Testing of PBO and Kevlar Fabrics for Application in Supersonic Jet Engine Fan Containment Systems written by and published by . This book was released on 1997 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Finite Element Analysis of Woven Fabric Body Armor Under Ballistic Impacts

Download or read book Finite Element Analysis of Woven Fabric Body Armor Under Ballistic Impacts written by Matthew C. DiSogra and published by . This book was released on 2013 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research was to use finite element modeling and simulations to evaluate the ballistic resistance of woven fabrics and soft body armor. In the work of this thesis, nonlinear finite element simulations were performed to evaluate the response of single- and multi-layer woven fabrics under ballistic impacts. A shell-element based fabric material model was first validated using perforation tests performed on a single-layer fabric under high-velocity impact by a spherical steel projectile. The validated model was then used to replicate high- and low-velocity impacts by a blunt aluminum projectile on eight-layer Kevlar targets. Results from the multi-layer simulations were shown to have good agreement with experimental data. Finally, the validated fabric model was used to simulate a full-scale ballistic test on a groin protector panel of the Interceptor Body Armor system. The simulation results of both the single- and multi¬layer impacts were shown to match well with experimental data in terms of the projectile's residual velocities. This research confirms the effectiveness of the fabric model and can be extended to a wide range of applications involving soft body armors.

Book Finite Element Modeling of Textiles in AbaqusTM CAE

Download or read book Finite Element Modeling of Textiles in AbaqusTM CAE written by Izabela Ciesielska-Wrobel and published by CRC Press. This book was released on 2019-07-26 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of the book is to provide engineers with a practical guide to Finite Element Modelling (FEM) in Abaqus CAE software. The guide is in the form of step-by-step procedures concerning yarns, woven fabric and knitted fabrics modelling, as well as their contact with skin so that the simulation of haptic perception between textiles and skin can be

Book Experimental and Numerical Study of the Mechanical Behavior of Metal polymer Multilayer Composite for Ballistic Protection

Download or read book Experimental and Numerical Study of the Mechanical Behavior of Metal polymer Multilayer Composite for Ballistic Protection written by Charles Francart and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present study deals with the development of a numerical model to evaluate the ballistic performance of a polymer/metal multilayer structure sintered by SPS. The materials are an aluminum alloy 7020 and an amorphous thermoplastic polyimide which are then assembled using an epoxy resin. The mechanical behavior of these three materials has been studied over wide ranges of strain rates (from 0.0001 / s to 50,000 / s) and temperatures (from -70 °C to 500 °C) corresponding to the extreme conditions encountered during impacts at high velocities. In order to improve the accuracy of the results, analytical approaches have been developed both for the modeling of the metal and for the polymers. After the calibration of the models, these models were implemented in ABAQUS® / Explicit (finite elements) via VUMAT subroutines in FORTRAN code. Ball impact tests at high velocities were performed on monolayer targets to validate numerical models. Numerous configurations of multilayer composites were then studied numerically and their ballistic performances have been compared.