A REVIEW ON RESEARCH PROGRESS IN EXPLOSION MECHANICS AND IMPACT DYNAMICS
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摘要:介绍了爆炸与冲击动力学数值模拟领域近几年的研究重点及主要进展.包括材料本构关系、 损伤破坏、冲击相变、射流和微喷等,其中材料本构关系的发展比较系统, 有几个典型的模 型可以参考,不仅应用广泛, 而且有实验数据进行检验和对比. 损伤模型只有唯象模型,虽 然有不同的物理机制, 但缺少直接的实验依据.射流的工程应用比较广泛, 理论研究比较缺 乏.微喷研究基本停留在定性阶段. 随着实验技术及测量手段的发展,相关领域取得了一些 令人欣慰的进展.Abstract:The present paper givea review on the development and current achievements in explosionmechanics and impact dynamics, including constitutive relation ofmaterial, damage evolution, and fracture, shock-induce phasetransition, jet and material ejection etc., among which thedevelopment of constitutive relation of material is relativelysystematic. There are several typical models that may be of valuefor reference, i.e. they can not only be widely applied, but alsobe used to check up and make contrast with experimental data. Asfor damage, only phenomenological models with different physicsmechanisms involved have been proposed up to now, and they are inurgent need of direct verification of experiment data. Thetechnique of jets is widely applied to engineering practice,however, there are scarcely profound theoretical studies.Investigation on material ejection also remains in a qualitativestage. With the development of experimental techniques andinstrumentation for measurement, some encouraging developmentshave been achieved in interrelated fields due to untiring work ofscientists and engineers.
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