Dynamical properties of a composite microcracked bar based on a generalized continuum formulation

被引：16
|
作者：
Settimi, Valeria [1 ]
Trovalusci, Patrizia [1 ]
Rega, Giuseppe [1 ]
机构：
[1] Univ Roma La Sapienza, Dipartimento Ingn Strutturale & Geotecn, Rome, Italy
来源：
CONTINUUM MECHANICS AND THERMODYNAMICS | 2019年 / 31卷 / 06期
关键词：
Multiscale-multifield models; Microcracked media; Wave propagation; Dispersion features; GRADIENT ELASTICITY; HETEROGENEOUS MATERIALS; WAVE-PROPAGATION; MICROPOLAR; MICROSTRUCTURE; MODELS; DISPERSION; DERIVATION;
D O I：
10.1007/s00161-019-00761-7
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The dynamical behavior of a mono-dimensional bar with distributed microcracks is addressed in terms of free and forced wave propagation. The multiscale model, derived from a generalized continuum formulation, accounts for the microstructure by means of a microdisplacement variable, added to the standard macrodisplacement, and of internal parameters representing density and length of microcracks. The influence of coupling between micro- and macrodisplacement overall response on the system is discussed, as well as the effect of the damage parameters on the propagating waves.
引用
收藏
页码：1627 / 1644
页数：18
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