FRACTURE-TOUGHNESS OF BRITTLE FOAMS

被引：67

作者：

HUANG, JS

GIBSON, LJ

机构：

[1] Department of Civil Engineering, Massachusetts Institute of Technology, Cambridge

来源：

ACTA METALLURGICA ET MATERIALIA | 1991年 / 39卷 / 07期

关键词：

D O I：

10.1016/0956-7151(91)90250-5

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

Existing models for the fracture toughness of brittle cellular materials have two limitations: the crack is assumed to be large relative to the cell size and the modulus of rupture of the cell wall material is assumed to be constant. In the previous companion paper, we reanalyzed the fracture toughness using a finite element analysis for short cracks and assuming that the modulus of rupture of the cell wall material followed a Weibull distribution. The finite element analysis gave a reduction factor for the effective fracture toughness for short cracks which was independent of the cell geometry. The Weibull analysis showed that the effect of cell size on the fracture toughness of brittle honeycombs is dependent upon the Weibull modulus of the cell wall material. We now apply similar ideas to the analysis of the fracture toughness of brittle foams.

引用

页码：1627 / 1636

页数：10

共 15 条

[1]

FRACTURE-BEHAVIOR OF OPEN-CELL CERAMICS [J].