A Macro Micromechanics Analysis Of A Notched Metal Matrix Composite
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Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 36 |
Release | : 2018-08-20 |
Genre | : |
ISBN | : 9781722005481 |
Download A Macro-Micromechanics Analysis of a Notched Metal Matrix Composite Book in PDF, Epub and Kindle
A macro-micromechanics analysis was formulated to determine the matrix and fiber behavior near the notch tip in a center-notched metal matrix composite. Results are presented for a boron/aluminum monolayer. The macro-level analysis models the entire notched specimen using a three dimensional finite element program which uses the vanishing-fiber-diameter model to model the elastic-plastic behavior of the matrix and the elastic behavior of the fiber. The micro-behavior is analyzed using a Discrete Fiber-Matrix (DFM) model containing one fabric and the surrounding matrix. The dimensions of the DFM model were determined by the ply thickness and the fiber volume fraction and corresponded to the size of the notch-tip element in the macro-level analysis. The boundary conditions applied to the DFM model were determined from the macro-level analysis. Stress components within the DFM model were calculated and stress distributions are presented along selected planes and surfaces within the DFM model, including the fiber-matrix interface. Yielding in the matrix was examined at the notch tip in both the macro- and micro-level analyses. The DFM model predicted higher stresses (24 percent) in the fiber compared to the global analysis. In the notch-tip element, the interface stresses indicated that a multi-axial criterion may be required to predict interfacial failure. The DFM analysis predicted yielding to initiate in the notch-tip element at a stress level 28 percent lower than predicted by the global analysis. Bigelow, C. A. and Naik, R. A. Langley Research Center RTOP 505-63-01-05...
Author | : |
Publisher | : |
Total Pages | : 36 |
Release | : 1990 |
Genre | : |
ISBN | : |
Download A Macro-micromechanics Analysis of a Notched Metal Matrix Composite Book in PDF, Epub and Kindle
Author | : CA. Bigelow |
Publisher | : |
Total Pages | : 12 |
Release | : 1992 |
Genre | : Boron/aluminum |
ISBN | : |
Download A Macro--Micromechanics Analysis of a Notched Metal Matrix Composite Book in PDF, Epub and Kindle
A macro-micromechanics analysis was formulated to determine the matrix and fiber behavior near the notch tip in a center-notched metal matrix composite. Results are presented for a boron/aluminum monolayer. The macro-level (or global) analysis models the entire notched specimen using a three-dimensional finite element program that uses the vanishing-fiber-diameter model to model the elastic-plastic behavior of the matrix and the elastic behavior of the fiber. The micro-behavior is analyzed using a discrete fiber-matrix (DFM) model containing one fiber and the surrounding matrix. The dimensions of the DFM model were determined by the ply thickness and the fiber volume fraction and corresponded to the size of the notch-tip element in the macro-level analysis. The boundary conditions applied to the DFM model were determined from the macro-level analysis. Stress components within the DFM model were calculated, and stress distributions are presented along selected planes and surfaces within the DFM model, including the fiber-matrix interface. Yielding in the matrix was examined at the notch tip in both the macro- and micro-level analyses. The DFM model predicted higher stresses (24%) in the fiber than predicted by the global analysis. In the notch-tip element, the interface stresses indicated that a multi-axial stress criterion may be required to predict interfacial failure. The DFM analysis predicted yielding to initiate in the notch-tip element at a stress level 28% lower than predicted by the global analysis.
Author | : |
Publisher | : |
Total Pages | : 22 |
Release | : 1992 |
Genre | : |
ISBN | : |
Download A Micromechanics-based Strength Prediction Methodology for Notched Metal Matrix Composites Book in PDF, Epub and Kindle
Author | : Glenn C. Grimes |
Publisher | : ASTM International |
Total Pages | : 465 |
Release | : 1992 |
Genre | : Composite materials |
ISBN | : 0803114265 |
Download Composite Materials Book in PDF, Epub and Kindle
Annotation In papers presented at the Tenth ASTM Conference on Composite Materials, held in San Francisco, April 1990, important composite materials technical issues are discussed in eight sections: compression test methodology analysis and development; general test methodology analysis and development; material mechanical properties and failure criteria; advanced materials analysis and test; analysis, test, and certification of structure; quality assurance and process control; interlaminar fracture analysis and test; and damage, flows, and repair. Member price, $95. Annotation copyrighted by Book News, Inc., Portland, OR.
Author | : George Voyiadjis |
Publisher | : Elsevier |
Total Pages | : 358 |
Release | : 2017-05-04 |
Genre | : Technology & Engineering |
ISBN | : 1483290441 |
Download Inelasticity and Micromechanics of Metal Matrix Composites Book in PDF, Epub and Kindle
This book contains fifteen papers based on the presentations made at the symposium on "Inelasticity and Micromechanics of Metal Matrix Composites" held at the University of Washington, USA, in mid-1994. The papers represent the most recent work conducted on inelasticity and micromechanics of metal matrix composites. The book is divided into two parts: Part I deals with the study of inelastic deformation in metal matrix composites, while Part II tackles the micromechanical aspects of metal matrix composites. The articles discuss different aspects of these two topics ranging from purely theoretical treatments to extensive experimental investigations. Many of the papers are by prominent researchers working in this area.
Author | : |
Publisher | : |
Total Pages | : 602 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, Epub and Kindle
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author | : |
Publisher | : |
Total Pages | : 36 |
Release | : 1991 |
Genre | : |
ISBN | : |
Download Effect of Fiber-matrix Debonding on Notched Strength of Titanium Metal Matrix Composites Book in PDF, Epub and Kindle
Author | : Cliff J. Lissenden |
Publisher | : |
Total Pages | : 36 |
Release | : 1996 |
Genre | : |
ISBN | : |
Download Critique of Macro Flow/Damage Surface Representations for Metal Matrix Composites Using Micromechanics Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 46 |
Release | : 1988 |
Genre | : |
ISBN | : |
Download Analysis of Notched Metal Matrix Composites Under Tension Loading Book in PDF, Epub and Kindle