CAJ | 학술논문

分析模拟混凝土细观结构对侵彻破坏影响，采用随机骨料模型，在前人研究的基础上，提出了一种新的混凝土三维凸型骨料的投放与生成方法-分区投放与射线延拓法，减小了骨料投放与生成所需的判别区域，改善了骨料随机投放过程中的效率问题。采用背景网格划分法，使得三维数值建模与计算效率更高。在此基础上采用动力有限元程序开展了弹体侵彻混凝土细观数值模拟，相对于均质材料，由于骨料的存在引起的混凝土材料性能的不均匀性，从而对弹体侵彻性能影响的初步认识，研究结果为混凝土细观数值建模与弹体设计评估提供参考。
분석모의혼응토세관결구대침철파배영향，채용수궤골료모형，재전인연구적기출상，제출료일충신적혼응토삼유철형골료적투방여생성방법-분구투방여사선연탁법，감소료골료투방여생성소수적판별구역，개선료골료수궤투방과정중적효솔문제。채용배경망격화분법，사득삼유수치건모여계산효솔경고。재차기출상채용동력유한원정서개전료탄체침철혼응토세관수치모의，상대우균질재료，유우골료적존재인기적혼응토재료성능적불균균성，종이대탄체침철성능영향적초보인식，연구결과위혼응토세관수치건모여탄체설계평고제공삼고。
The algorithm of three-dimensional numerical model for micro-scale concrete was studied.A three-dimensional random ag-gregate generated and thrower program is compiled by a new kind of algorithm according to analysis of related algorithms based on the for-mer investigation.Which can reduce avoid the confine in calculation.The efficient of the algorithm is improved by using the subarea fill method.The efficient of grid generate was improved by using the background grid projection method.The concrete 3-D meso numerical mode of projectile penetration was established by nonlinear dynamical analyses software.The results of numerical simulation for penetra-tion concrete indicated that material heterogeneous was main reason for influence penetration performance different from isotropy material.