A viscoelastic-plastic constitutive model for mechanical response of plastic-bonded explosive

IF 3.4 3区工程技术 Q1 MECHANICS

International Journal of Solids and Structures Pub Date : 2025-05-28 DOI:10.1016/j.ijsolstr.2025.113466

Suyang Zhong, Tao Li, Shenfei Liao, Hua Fu, Qingpeng Ma

引用次数: 0

Abstract

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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塑性粘结炸药力学响应的粘弹塑性本构模型

建立了一种新的粘弹塑性本构模型来预测塑性粘结炸药的非弹性变形。通过广义Maxwell模型描述了应变率对剪切模量和体模量的影响。采用双曲Drucker-Prager （D-P）准则结合双硬化变量来解决拉压不对称和应变率对强度的影响。提出了一种描述膨胀耦合塑性流动的非关联流动规则。有限元实现展示了卓越的预测能力。不同应变率条件下的单轴拉伸和压缩应力应变曲线以及体应力和体应变曲线的计算结果与实验结果吻合较好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Solids and Structures 物理-力学

CiteScore

6.70

自引率

8.30%

发文量

405

审稿时长

70 days

期刊介绍： The International Journal of Solids and Structures has as its objective the publication and dissemination of original research in Mechanics of Solids and Structures as a field of Applied Science and Engineering. It fosters thus the exchange of ideas among workers in different parts of the world and also among workers who emphasize different aspects of the foundations and applications of the field. Standing as it does at the cross-roads of Materials Science, Life Sciences, Mathematics, Physics and Engineering Design, the Mechanics of Solids and Structures is experiencing considerable growth as a result of recent technological advances. The Journal, by providing an international medium of communication, is encouraging this growth and is encompassing all aspects of the field from the more classical problems of structural analysis to mechanics of solids continually interacting with other media and including fracture, flow, wave propagation, heat transfer, thermal effects in solids, optimum design methods, model analysis, structural topology and numerical techniques. Interest extends to both inorganic and organic solids and structures.