Mesoscopic Maxwell-dissipative Finite Element model for crack propagation

被引：4
|
作者：
Heino, P
Kaski, K
机构：
[1] Lab. of Computational Engineering, Helsinki University of Technology, FIN-02150 Espoo
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS C | 1997年 / 8卷 / 02期
关键词：
dynamic crack propagation; viscoelasticity; branch bending;
D O I：
10.1142/S0129183197000321
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Dynamic fracture in viscoelastic solids has been studied computationally using a mesoscale Finite Element model. In order to study crack propagation in homogeneous or amorphous materials the locations of nodes are selected regularly or randomly, respectively. In both cases results show oscillations in crack velocity above a critical velocity of about one-half the Raleigh velocity. The complicated topology of cracks obeys the scaling law found in experimental works. Dissipative systems are found to bear a larger maximum strain than purely elastic systems before macroscopic fracture.
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页码：383 / 395
页数：13
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