Elastic wave propagation in in-homogenous peridynamic bar

Mutnuri, Venkata S and Gopalakrishnan, Srinivasan (2017) Elastic wave propagation in in-homogenous peridynamic bar. In: Nanosensors, Biosensors, Info-Tech Sensors and 3D Systems 2017, 26 - 29 March 2017, Portland, 101671L.

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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 interactions. Using the dispersion law of piece-wise linear micro-modulus function with horizon, results of an accurate match to experimental phonon dispersion are presented.

Item Type:	Conference Paper
Publisher:	SPIE
Additional Information:	The copyright for this article belongs to the SPIE.
Keywords:	Aluminum phonon dispersion; dispersion law; escape frequency; horizon length; micro-modulus function; peridy-namics; Plane wave propagation
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	14 Jun 2022 05:36
Last Modified:	14 Jun 2022 05:36
URI:	https://eprints.iisc.ac.in/id/eprint/73444

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