基于区块划分并行填充的混凝土细观建模方法及其在弹体超高速侵彻中应用

李旭; 刘彦; 闫俊伯; 时振清; 王虹富; 许迎亮; 黄风雷

doi:10.12382/bgxb.2023.0945

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基于区块划分并行填充的混凝土细观建模方法及其在弹体超高速侵彻中应用

更新时间：2025-08-18

- 基于区块划分并行填充的混凝土细观建模方法及其在弹体超高速侵彻中应用
- The Meso-scale Modeling Method for Concrete Based on Block Division and Parallel Filling and Its Application in High-speed Penetration
- 兵工学报 2023年44卷第12期页码：3543-3561
- 作者机构：
  
  1. 北京理工大学爆炸科学与技术国家重点实验室, 北京 100081
  2. 北京理工大学重庆创新中心, 重庆 401120
  3. 中国兵器科学研究院, 北京 100089
- 作者简介：
  
  *邮箱: liuyan@bit.edu.cn
- 基金信息：
  
  国家自然科学基金项目(12102050)
- DOI：10.12382/bgxb.2023.0945
  中图分类号：
- 收稿：2023-09-18，
  
  网络出版：2024-01-12，
  
  纸质出版：2023-12-30
- 稿件说明：
移动端阅览
李旭, 刘彦, 闫俊伯, 等. 基于区块划分并行填充的混凝土细观建模方法及其在弹体超高速侵彻中应用[J]. 兵工学报, 2023,44(12):3543-3561.

Xu LI, Yan LIU, Junbo YAN, et al. The Meso-scale Modeling Method for Concrete Based on Block Division and Parallel Filling and Its Application in High-speed Penetration[J]. Acta Armamentarii, 2023, 44(12): 3543-3561.
李旭, 刘彦, 闫俊伯, 等. 基于区块划分并行填充的混凝土细观建模方法及其在弹体超高速侵彻中应用[J]. 兵工学报, 2023,44(12):3543-3561. DOI： 10.12382/bgxb.2023.0945.

Xu LI, Yan LIU, Junbo YAN, et al. The Meso-scale Modeling Method for Concrete Based on Block Division and Parallel Filling and Its Application in High-speed Penetration[J]. Acta Armamentarii, 2023, 44(12): 3543-3561. DOI： 10.12382/bgxb.2023.0945.

摘要

基于超高速深侵彻细观模拟中对大型复杂模型快速生成的需要

提出一种基于材料属性关联和区块划分并行填充的混凝土细观模型构建方法

并基于界面过渡区(ITZ)表征方法的差异化建模验证其在准静态与超高速侵彻条件下的表征能力。研究结果表明:该加速建模方法在建模效率与精确度上具备显著优势

可实现大型复杂形状混凝土构件的快速建模和细观组分的精确占比投放。进一步总结了ITZ实体单元法、无ITZ法和粘结失效接触法3种不同ITZ表征方法的适用条件与材料参数初判标准

不同于准静态模拟中的普遍优越性

超高速侵彻模拟中ITZ实体单元法对侵深与弹坑尺寸的预测效果最佳(偏差小于10%)

粘结失效接触法则因未引入应变率效应与易出现数值不稳定现象而在弹坑尺寸预测中表现相对最差。此外

细观模拟中对侵蚀弹体的响应计算和形貌表征与已建立的头部演化高速侵彻模型表现出高度一致性。该研究成果可解决工程实际中的大型复杂细观靶体建模困难

并为超高速深侵彻的细观尺度机理探究提供基础。

Abstract

Based on the need for rapid generation of large and complex finite element model in the meso-scale simulation of high-speed deep penetration

a meso-scale modeling method of concrete based on material property identification

block division and parallel filling is proposed. Different interface transition zone (ITZ) characterization methods are used to verify the characterization ability of the meso-scale modeling method under quasi-static and ultra-high speed penetration conditions. The accelerated modeling method has significant advantages in modeling efficiency and accuracy

which can achieve rapid modeling of large and complex shaped concrete structures and precise proportion allocation of microscopic components. Furthermore

the applicable conditions and the initial judgment criteria of material parameters of different ITZ characterization methods (i.e.

ITZ solid element method

non-ITZ method and cohesive contact method) are summarized. The ITZ solid element method has the best prediction effect on penetration depth and crater size in ultra-high speed penetration simulation (the deviation is less than 10%); the cohesive contact method has the relatively worst performance in crater size prediction because it does not introduce strain rate effect and is prone to numerical instability. In addition

the response calculation and morphology characterization of the eroded projectile in the meso-scale simulation are highly consistent with the established nose evolution model for high-speed penetration. The research results can solve the difficulties of modeling the large and complex meso-scale targets in engineering practice

and provide the basis for exploring the meso-scale mechanism of ultra-high speed deep penetration.

关键词

Keywords

references

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