文献类型：期刊文献

英文题名：Predicting the mechanical properties of brittle porous materials with various porosity and pore sizes

作者：Cui, Zhiwei[1];Huang, Yongmin[1];Liu, Honglai[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Specially Funct Polymer Mat & Related Tec, Shanghai 200237, Peoples R China

年份：2017

卷号：71

起止页码：10

外文期刊名：JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS

收录：;EI(收录号：20170903404966);WOS:【SCI-EXPANDED(收录号:WOS:000401880900002)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 21476071) and Shanghai Leading Academic Discipline Project (B502).

语种：英文

外文关键词：Lattice spring model; Porosity; Brittle fracture; Mechanical properties; Weibull modulus

摘要：In this work, a micromechanical study using the lattice spring model (LSM) was performed to predict the mechanical properties of BPMs by simulation of the Brazilian test. Stress-strain curve and Weibull plot were analyzed for the determination of fracture strength and Weibull modulus. The presented model composed of linear elastic elements is capable of reproducing the non-linear behavior of BPMs resulting from the damage accumulation and provides consistent results which are in agreement with experimental measurements. Besides, it is also found that porosity shows significant impact on fracture strength while pore size dominates the Weibull modulus, which enables us to establish how choices made in the microstructure to meet the demand of brittle porous materials functioning in various operating conditions.