混凝土断裂过程细观数值模拟

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1、numericalsimulationiswellagreementwiththeresultoftest.5)TheevolutionprocessesofRCClayercrack.Firstly,thedamisdividedandtherandomaggregatemodelofRCCisobtainedonthebasisofblockcuttingmethod.ThenthecohesivecrackmodelofRCCisobtainedbythealgorithmofinsertingcohesiveelement.Finally,underhydrostatic

2、pressure,theevolutionprocessesofRCClayercrackisnumericalsimulatedbyAbaqus.Keywords:randomaggregatecohesiveelementmesoscopicparameterscrackmesoscopicconcretedamIV万方数据目录引言...................................................................................................................11绪论.....

3、..........................................................................................................21.1研究背景与意义................................................................................21.2混凝土细观力学模型........................................................................21.3混凝土裂缝模型

4、................................................................................41.4本文研究的主要内容........................................................................62混凝土随机骨料模型的建立.......................................................................82.1混凝土骨料粒径分布及常用级配.........................

5、...........................82.2蒙特卡罗法与随机数的产生............................................................92.3骨料生成算法..................................................................................102.4投放侵入判别准则..........................................................................152.5四级配混凝土

6、随机骨料模型生成实例..........................................162.6本章小结..........................................................................................173混凝土粘结裂缝模型的建立及开裂过程的模拟.....................................193.1粘结裂缝模型简介.....................................................................

7、.....193.2粘结单元嵌入算法..........................................................................233.3混凝土粘结裂缝模型......................................................................243.4单轴受拉数值模拟试验...................................................