Influence of empty hole on crack running in PMMA plate under dynamic loading

被引：31

作者：

Wang, Yanbing ^{[1
]}

Yang, Renshu ^{[1
,2
]}

Zhao, Gaofeng ^{[3
]}

机构：

[1] China Univ Min & Technol Beijing, Sch Mech & Architecture Engn, Beijing 100083, Peoples R China

[2] State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China

[3] Univ New South Wales, Ctr Infrastruct Engn & Safety, Sch Civil & Environm Engn, Sydney, NSW 2052, Australia

来源：

POLYMER TESTING | 2017年 / 58卷

基金：

中国国家自然科学基金;

关键词：

Empty hole; Crack propagation; Brittle material; Caustics; Distinct lattice spring model; STRAIN-RATE; BRITTLE MATERIALS; TENSILE-STRENGTH; WAVE-PROPAGATION; RATE DEPENDENCE; FRACTURE; FAILURE; BEHAVIOR; MODEL; ROCKS;

D O I：

10.1016/j.polymertesting.2016.11.020

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influence of original prefabricated empty hole on dynamic crack propagation was studied. The dynamic behavior of crack propagation due to the impacting of drop hammer on the defective PMMA medium of manufactured hole defect (different extent of left shift, respectively, for L = 110 mm, L = 111.25 mm and L = 112.5 mm) was conducted using the test system of digital laser dynamic caustics (DLDC). The stress intensity factor and velocity at the running crack tip were analyzed. Moreover, the recently developed distinct lattice spring model (DLSM) was validated using the experimental data. It was found that the numerical modeling can reproduce the experimentally observed phenomena. Combining the experimental and numerical results, it can be concluded that the influence of empty hole defects of brittle materials on dynamic fracturing is great. (C) 2016 Published by Elsevier Ltd.

引用

页码：70 / 85

页数：16

共 47 条

[1]

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