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Shock-Induced Damage and Dynamic Fracture in Cylindrical Bodies Submerged in Liquid.

Publication ,  Journal Article
Cao, S; Zhang, Y; Liao, D; Zhong, P; Wang, KG
Published in: International journal of solids and structures
September 2019

Understanding the response of solid materials to shock loading is important for mitigating shock-induced damages and failures, as well as advancing the beneficial use of shock waves for material modifications. In this paper, we consider a representative brittle material, BegoStone, in the form of cylindrical bodies and submerged in water. We present a computational study on the causal relationship between the prescribed shock load and the resulting elastic waves and damage in the solid material. A recently developed three-dimensional computational framework, FIVER, is employed, which couples a finite volume compressible fluid solver with a finite element structural dynamics solver through the construction and solution of local, one-dimensional fluid-solid Riemann problems. The material damage and fracture are modeled and simulated using a continuum damage mechanics model and an element erosion method. The computational model is validated in the context of shock wave lithotripsy and the results are compared with experimental data. We first show that after calibrating the growth rate of microscopic damage and the threshold for macroscopic fracture, the computational framework is capable of capturing the location and shape of the shock-induced fracture observed in a laboratory experiment. Next, we introduce a new phenomenological model of shock waveform, and present a numerical parametric study on the effects of a single shock load, in which the shock waveform, magnitude, and the size of the target material are varied. In particular, we vary the waveform gradually from one that features non-monotonic decay with a tensile phase to one that exhibits monotonic decay without a tensile phase. The result suggests that when the length of the shock pulse is comparable to that of the target material, the former waveform may induce much more significant damage than the latter one, even if the two share the same magnitude, duration, and acoustic energy.

Duke Scholars

Published In

International journal of solids and structures

DOI

ISSN

0020-7683

Publication Date

September 2019

Volume

169

Start / End Page

55 / 71

Related Subject Headings

  • Mechanical Engineering & Transports
  • 40 Engineering
  • 09 Engineering
 

Citation

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Cao, S., Zhang, Y., Liao, D., Zhong, P., & Wang, K. G. (2019). Shock-Induced Damage and Dynamic Fracture in Cylindrical Bodies Submerged in Liquid. International Journal of Solids and Structures, 169, 55–71. https://doi.org/10.1016/j.ijsolstr.2019.04.002
Cao, S., Y. Zhang, D. Liao, P. Zhong, and K. G. Wang. “Shock-Induced Damage and Dynamic Fracture in Cylindrical Bodies Submerged in Liquid.International Journal of Solids and Structures 169 (September 2019): 55–71. https://doi.org/10.1016/j.ijsolstr.2019.04.002.
Cao S, Zhang Y, Liao D, Zhong P, Wang KG. Shock-Induced Damage and Dynamic Fracture in Cylindrical Bodies Submerged in Liquid. International journal of solids and structures. 2019 Sep;169:55–71.
Cao, S., et al. “Shock-Induced Damage and Dynamic Fracture in Cylindrical Bodies Submerged in Liquid.International Journal of Solids and Structures, vol. 169, Sept. 2019, pp. 55–71. Epmc, doi:10.1016/j.ijsolstr.2019.04.002.
Cao S, Zhang Y, Liao D, Zhong P, Wang KG. Shock-Induced Damage and Dynamic Fracture in Cylindrical Bodies Submerged in Liquid. International journal of solids and structures. 2019 Sep;169:55–71.
Journal cover image

Published In

International journal of solids and structures

DOI

ISSN

0020-7683

Publication Date

September 2019

Volume

169

Start / End Page

55 / 71

Related Subject Headings

  • Mechanical Engineering & Transports
  • 40 Engineering
  • 09 Engineering