Modeling the dynamic response of rock masses with multiple compliant fluid saturated joint sets&nbsp;-&nbsp;Part II: Continuum modeling

Vorobiev, O. Y.; Rubin, M. B.

doi:10.1016/j.ijimpeng.2020.103746

Modeling the dynamic response of rock masses with multiple compliant fluid saturated joint sets - Part II: Continuum modeling

Journal Article · Tue Oct 19 00:00:00 EDT 2021 · International Journal of Impact Engineering

DOI:https://doi.org/10.1016/j.ijimpeng.2020.103746· OSTI ID:1807764

^[1]; Rubin, M. B. ^[2]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Technion-Israel Institute of Technology, Haifa (Israel)

Part I of this two-part paper describes enhancements of a mesoscale model to include: many non-persistent fluid saturated joints with finite area, normal compliance with hysteresis and the weakening effects of angular deviation in the joint sets and of fluid pressure in the joints. The objective of this Part II is to use the results of the mesoscale model as simulated data to inspire functional forms in a continuum model for rock masses with multiple compliant fluid saturated joint sets which include these enhancements. Also, an algorithm is proposed for reducing the number of joint sets being modeled. Examples are presented here which show that the continuum model can predict similar anisotropic response to that observed in mesoscale simulations. In contrast with the mesoscale model, the continuum model can be used for large scale simulations of real applications, smoothly transitioning from coupled inelastic thermomechanical response near an explosive source to orthotropic elastic response far from the source.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

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

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1807764

Alternate ID(s):: OSTI ID: 1811043

Report Number(s):: LLNL-JRNL--806180; 1011376

Journal Information:: International Journal of Impact Engineering, Journal Name: International Journal of Impact Engineering Journal Issue: na Vol. 150; ISSN 0734-743X

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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