Non-linear visco-hyperelastic model of ballistic gelatine – mathematical modelling, experiment, numerical simulations

IF 5.1 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Impact Engineering Pub Date : 2025-01-12 DOI:10.1016/j.ijimpeng.2025.105225

Marek Pawlikowski , Roman Gieleta , Andrzej Penkul , Yuriy Pyr'yev

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引用次数: 0

Abstract

In the paper we formulated a new constitutive model for ballistic gelatine commonly used in shooting tests for military purposes. The model considers new effects that the gelatine reflects, i.e. non-linear viscoelasticity. The model was based on experimental tests including high-rate compression and stress relaxation tests. Our aim was to develop the mathematical modelling of ballistic gelatine and provide an easy-to-implement model to simulate ballistic tests. We implemented our constitutive equation to a finite element simulation of a bullet shooting through the gelatine block. The material constants were calibrated based on curve fitting method, i.e. we fitted the model to the experimental curves. The reliability of the constants values were confirmed by very good fitting and by validation of the model. The shooting simulation gave promising results which allowed us to observe realistic gelatine behaviour resulting from the bullet passage. The obtained results suggest that viscoelasticity plays an important role in the gelatine deformation and should be considered in mathematical modelling of its behaviour.

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来源期刊

International Journal of Impact Engineering 工程技术-工程：机械

CiteScore

8.70

自引率

13.70%

发文量

241

审稿时长

52 days

期刊介绍： The International Journal of Impact Engineering, established in 1983 publishes original research findings related to the response of structures, components and materials subjected to impact, blast and high-rate loading. Areas relevant to the journal encompass the following general topics and those associated with them: -Behaviour and failure of structures and materials under impact and blast loading -Systems for protection and absorption of impact and blast loading -Terminal ballistics -Dynamic behaviour and failure of materials including plasticity and fracture -Stress waves -Structural crashworthiness -High-rate mechanical and forming processes -Impact, blast and high-rate loading/measurement techniques and their applications