Elastic wave propagation in in-homogenous peridynamic bar

Venkata S. Mutnuri; Srinivasan Gopalakrishnan

doi:10.1117/12.2259991

17 April 2017 Elastic wave propagation in in-homogenous peridynamic bar

Venkata S. Mutnuri, Srinivasan Gopalakrishnan

Proceedings Volume 10167, Nanosensors, Biosensors, Info-Tech Sensors and 3D Systems 2017; 101671L (2017) https://doi.org/10.1117/12.2259991
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States

Abstract

In this paper dispersion characteristics of linear in-homogenous peridynamic bar is presented. The bond-based linear peridynamics model is considered. In-homogeneity in the bar is introduced through the linear micro- modulus function. It is shown that peridynamic bar is a low pass filter with existence of an escape frequency for all linear micro-modulus functions. It is also shown that not all linear micro-modulus functions are physically admissible. A correlation is established between the peridynamics and lattice dynamics with long-range interac- tions. Using the dispersion law of piece-wise linear micro-modulus function with horizon, results of an accurate match to experimental phonon dispersion are presented.

Conference Presentation

Citation Download Citation

Venkata S. Mutnuri and Srinivasan Gopalakrishnan "Elastic wave propagation in in-homogenous peridynamic bar", Proc. SPIE 10167, Nanosensors, Biosensors, Info-Tech Sensors and 3D Systems 2017, 101671L (17 April 2017); https://doi.org/10.1117/12.2259991

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