A peridynamic model based on generalized thermoelastic theory in a plate with oblique cracks

被引：7

作者：

Wen, Zhuoxin ^{[1
]}

Hou, Chi ^{[1
]}

Zhao, Meiying ^{[1
]}

Wan, Xiaopeng ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sch Aeronaut, Xian 710072, Shaanxi, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2023年 / 214卷

关键词：

Cattaneo-Vernotte model; Peridynamic; Transient thermal stress intensity factor; Thermal shock; Multi; -crack; HYPERBOLIC HEAT-CONDUCTION; TRANSIENT THERMAL FRACTURE; NON-FOURIER; COMPOSITE-MATERIALS; STRESS; SIMULATION; PROPAGATION; FORMULATION; LEQUATION; PLANE;

D O I：

10.1016/j.ijheatmasstransfer.2023.124451

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, a peridynamic model based on generalized thermoelastic theory is derived by irreversible thermodynamics. This model avoids the spatial derivative and can be easily applied to generalized ther-moelastic problems with discontinuities. The transient temperature response is captured using the non -Fourier CattaneoVernotte (C-V) model. The interaction integral is employed to calculate the transient ther-mal stress intensity factors (TSIFs). Numerical examples are presented for analyzing the effects of crack orientation angle and multi-crack distribution on transient thermoelastic response. And the crack propa-gation behavior under non-Fourier thermal shock is further discussed in detail. It is found that with the increase of the angle between inner crack and heating boundary, the sensitivity of mode-I TSIFs to the non-Fourier effect increases, while the sensitivity of mode-II TSIFs to the non-Fourier effect decreases. This peridynamic model may be useful for understanding the crack behaviors of thermal protection ma-terials under thermal shock.& COPY; 2023 Elsevier Ltd. All rights reserved.

引用

页数：13

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