基于ANSYS/LS-DYNA的壁面摩擦因数影响分析

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英文篇名：Analysis of Wall Friction Coefficient Based on ANSYS/LS-DYNA 作者：何宁 ; 覃彬 英文作者：HE Ning;QIN Bin;North China Institute of Science & Technology;State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology; 关键词：摩擦因数 ; 冲击波 ; 数值模拟 英文关键词：friction effect;;shock wave;;numerical simulation 中文刊名：CUXI 英文刊名：Journal of Ordnance Equipment Engineering 机构：华北科技学院;北京理工大学爆炸科学与技术国家重点实验室; 出版日期：2019-05-25 出版单位：兵器装备工程学报 年：2019 期：v.40;No.250 基金：河北省自然科学基金项目(E2018508089);; 中央高校基础科学研究专项经费(AQ1202A) 语种：中文; 页：CUXI201905049 页数：4 CN：05 ISSN：50-1213/TJ 分类号：239-242

摘要

针对实验测量壁面摩擦因数的局限性,采用ANSYS/LS-DYNA数值模拟技术,进行了壁面摩擦效应对空气冲击波传播的影响分析,提出了摩擦因数与巷道内冲击波衰减幅度、衰减比例的相互关系;模拟结果表明:超压衰减幅度并不是随摩擦因数增大而无限增大,超压衰减幅度的增量随摩擦因数增大而逐渐减小,随衰减比例的最小值约为0. 75。
        In view of the limitation of the experimental measurement of wall friction coefficient,ANSYS/LS-DYNA numerical simulation technology was used to analyze the influence of wall friction on the propagation of air shock wave,and the relationship between the friction coefficient and the attenuation amplitude and proportion of shock wave in roadway was proposed. The simulation results showed that the attenuation amplitude of overpressure did not increase infinitely with the increase of friction coefficient.The increment of the attenuation amplitude of overpressure decreased gradually with the increase of friction coefficient,and the minimum value of the attenuation ratio was about 0. 75.

引文

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