摘要
基于投放区域均匀化思想,由随机长方体基骨料生成单个骨料,建立骨料材料库,实现了大体积的凸型混凝土骨料随机快速投放。凸型多面体骨料能够较好地模拟骨料实际形状,达到简单快速的目的,为混凝土不均质性有限元研究和细观渐进均匀化有限元研究提供合理准确的模型。简单的不均质计算和三维均匀化计算算例说明了本算法的有效性。
A 3-D numerical model was developed for concrete microstructurestudies based on the homogenizationmethod.Each aggregate grew from a random cuboidthen built theaggregatestoragein order to developa fast algorithmfor random 3-D convex aggregate packing.The convex aggregate model was more accurate comparing withspherical model.The microstructuremodel developed by using this algorithmcan provide sufficient accuracy for concrete inhomogeneity studies and microstructure asymptotichomogenization theory is studied by combination with FEM.
出处
《水电能源科学》
2006年第3期39-42,共4页
Water Resources and Power
基金
国家自然科学基金资助项目(50378041)
关键词
随机骨料
均匀化方法
有限元
混凝土
细观
random aggregate
homogenization
FEM
concrete
microstructure
