Control Volume Analysis of Elastic Wave Front in Composite Materials

Author:

Pei Chi Chou 1,Wang A.S.D.1

Affiliation:

1. Wave Propagation Research Center Drexel University Philadelphia, Pennsylvania 19104

Abstract

A theory is proposed for the analysis of an elastic wave front in unidirectionally laminated as well as fiber reinforced composite mate rials. According to this theory, which is based on the concept of control volume, elastic wave front due to abrupt loadings propagates at a velocity which is bounded by the wave velocities of the fiber material and of the matrix material. The theory includes a nonlinear effect of area change; the wave front velocity is a function of the impact intensity. But for linearly elastic materials, this non-linear effect is small; if it is neglected, then wave front speed in the com posite becomes independent of the impact intensity. Consideration has also been given to the determination of the shear force along the interface between the reinforcing fiber and the matrix. It is found that for certain combination of fiber and matrix, the shear stress attains an extremum value which may cause debond ing of the composite under moderate impact loading.

Publisher

SAGE Publications

Subject

Materials Chemistry,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites

Cited by 11 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. New formulations for the Hopkinson bar technique to extract a response of the constituent material in composite specimens;Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications;2001-01-01

2. The failure of composite materials under high-velocity liquid impact;Journal of Physics D: Applied Physics;1976-07-11

3. Mechanism for shear delamination under dynamic loading;Nature;1975-09

4. Multi‐control‐volume analysis of elastic and plastic wave fronts in composite materials;Journal of Applied Physics;1975-06

5. COMPOSITE MATERIAL MECHANICS: THERMOELASTIC MICROMECHANICS*;Transactions of the New York Academy of Sciences;1974-11

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