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A viscoelastic-plastic constitutive model for mechanical response of plastic-bonded explosive
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DOI：10.1016/j.ijsolstr.2025.113466.png)
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Abstract
En 中文
A novel viscoelastic-plastic constitutive model is developed to predict the inelastic deformation of plastic-bonded explosive (PBX). The strain rate effect on shear and bulk moduli is described through a generalized Maxwell model. A hyperbolic Drucker-Prager (D-P) criterion incorporating dual hardening variables to resolve the strength influence by tension–compression asymmetry and strain rate. A non-associative flow rule is proposed to describe dilatancy-coupled plastic flow. Finite element implementation demonstrated exceptional predictive capability. The calculated results of the uniaxial tension and compression stress–strain curves, as well as the volumetric stress and volumetric strain curves under different strain rate conditions, are in good agreement with the experimental results.
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3.8
Papers:
1.1W
Citations:
3.1W
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