Acoustical wave propagator for time-domain dynamic stress concentration in a plate with a sharp change of section

S.Z. Peng, Jie Pan

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6 Citations (Scopus)

Abstract

The acoustical wave propagator technique is applied to study the time-domain dynamic stress concentration in a two-dimensional flexible plate with a sharp change of section. As a wave packet approaches the plate discontinuity where the sharp change of thickness is introduced, the spatial interference patterns in the displacement of the plate and internal stresses vary with time. The constructive interference of stresses is referred to as time-domain stress concentration. The superposition of wave fronts of incident and reflected wave packets is used to explain the spatial distribution of the interference patterns. The increase of dynamic stress near the vicinity of the discontinuity boundary of the plate is studied as a function of time and the thickness ratio of the plates. (C) 2004 Acoustical Society of America.
Original languageEnglish
Pages (from-to)492-502
JournalJournal of the Acoustical Society of America
Volume117
Issue number2
DOIs
Publication statusPublished - 2005

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stress concentration
propagation
interference
wave packets
discontinuity
thickness ratio
reflected waves
wave fronts
residual stress
spatial distribution
Waves
Interference
Thickness
Discontinuity

Cite this

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abstract = "The acoustical wave propagator technique is applied to study the time-domain dynamic stress concentration in a two-dimensional flexible plate with a sharp change of section. As a wave packet approaches the plate discontinuity where the sharp change of thickness is introduced, the spatial interference patterns in the displacement of the plate and internal stresses vary with time. The constructive interference of stresses is referred to as time-domain stress concentration. The superposition of wave fronts of incident and reflected wave packets is used to explain the spatial distribution of the interference patterns. The increase of dynamic stress near the vicinity of the discontinuity boundary of the plate is studied as a function of time and the thickness ratio of the plates. (C) 2004 Acoustical Society of America.",
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AU - Pan, Jie

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AB - The acoustical wave propagator technique is applied to study the time-domain dynamic stress concentration in a two-dimensional flexible plate with a sharp change of section. As a wave packet approaches the plate discontinuity where the sharp change of thickness is introduced, the spatial interference patterns in the displacement of the plate and internal stresses vary with time. The constructive interference of stresses is referred to as time-domain stress concentration. The superposition of wave fronts of incident and reflected wave packets is used to explain the spatial distribution of the interference patterns. The increase of dynamic stress near the vicinity of the discontinuity boundary of the plate is studied as a function of time and the thickness ratio of the plates. (C) 2004 Acoustical Society of America.

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EP - 502

JO - Journal of Acoustical Society of America

JF - Journal of Acoustical Society of America

SN - 0001-4966

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