A Novel Design of Guiding Stress Wave Propagation

Li, Y.; Ngo, E.; Song, B.

doi:10.1007/s40870-020-00253-9

A Novel Design of Guiding Stress Wave Propagation

Journal Article · Mon Jul 13 00:00:00 EDT 2020 · Journal of Dynamic Behavior of Materials

DOI:https://doi.org/10.1007/s40870-020-00253-9· OSTI ID:1644059

^[1]; Ngo, E. ^[2]; Song, B. ^[3]

Dartmouth College, Hanover, NH (United States)
California State Univ. (CalState), Long Beach, CA (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Impact loads can induce a series of undesirable physical phenomena including vibration, acoustical shock, perforation, fracture and fragmentation, etc. The energy associated with the impact loads can lead to severe structure damage and human injuries. A design approach which effectively reduces these negative impacts through shock/stress wave diversion is highly needed. In this paper, a computational model which predicts stress wave propagation by considering different beam geometries and configurations is developed. Additionally, a novel concept of wave guide design which modifies the stress wave propagation path without disturbance is also presented. Furthermore, this design approach is not only useful for material property characterization particularly at intermediate or high strain rates, but also allows stress wave propagation in a desired direction as the shock/impact energy can be redistributed in controllable paths. The numerical results are experimentally verified through a Drop-Hopkinson bar apparatus at Sandia National Laboratories.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000; NA0003525

OSTI ID:: 1644059

Report Number(s):: SAND--2020-1719J; 683774

Journal Information:: Journal of Dynamic Behavior of Materials, Journal Name: Journal of Dynamic Behavior of Materials Vol. 6; ISSN 2199-7446

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

36 MATERIALS SCIENCE
Drop-Hopkinson bar
Kolsky bar
Stress wave propagation
finite element method
intermediate strain rate
wave diversion

A Novel Design of Guiding Stress Wave Propagation

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