分离式霍普金森压力棒
材料科学
元建模
参数统计
复合材料
抗压强度
结构工程
纤维
有限元法
动载荷
天然橡胶
应变率
计算机科学
工程类
数学
程序设计语言
统计
作者
Zhenyu Huang,Weixiong Deng,Shilin Du,Zewen Gu,Wu-Jian Long,Jianqiao Ye
标识
DOI:10.1016/j.compstruct.2020.113210
摘要
This paper presents, first, a finite element (FE) model for a rubberized ultra-lightweight cement composite (RULCC), which uses a modified Holmquist-Johnson-Concrete (H-J-C) constitutive law that is calibrated and validated by new Split Hopkinson pressure bar (SHPB) tests on the material. The validated FE model is used then as the core of a cloud computing platform using a multi node cloud simulation framework to carry out the parametric simulations, which generate required data to develop a meta-model to predict the dynamic impact strength of the RULCC. Design of experiment (DoE) and Generic Programming techniques are the main instruments in developing meta-models with reduced size of data. Finally, a meta-model of explicit expression, which is the first of its kind and considers the effect of rubber ratio, fiber ratio and dynamic impact strain rate, is proposed to predict the dynamic impact strength of the RULCC.
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