Fracture analysis of nanobeams based on the stress-driven non-local theory of elasticity

被引：16
|
作者：
Vantadori, Sabrina [1 ]
Luciano, Raimondo [2 ]
Scorza, Daniela [2 ]
Darban, Hossein [2 ]
机构：
[1] Univ Parma, Dept Engn & Architecture, Parma, Italy
[2] Univ Naples Parthenope, Dept Engn, I-80133 Naples, Italy
来源：
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES | 2022年 / 29卷 / 14期
关键词：
Energy release rate; nanobeam; stress-driven non-local integral model; stress intensity factor; INTENSITY FACTORS; SURFACE-ENERGY; FREE-VIBRATION; NANO-BEAMS; SHEAR; DELAMINATION; COMPOSITES; MODEL; CRACK;
D O I：
10.1080/15376494.2020.1846231
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mode I fracture behavior of edge- and centrally-cracked nanobeams is analyzed by employing both stress-driven non-local theory of elasticity and Bernoulli-Euler beam theory. The present formulation implements the size-dependency experimentally observed at material micro- and nano-scale, by assuming a non-local constitutive law, that relates the strain to the stress in each material point of the body, through an integral convolution and a kernel. It is observed that the energy release rate decreases by increasing the nonlocality, showing the superior fracture performance of nanobeams with respect to large-scale beams.
引用
收藏
页码：1967 / 1976
页数：10
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