Non-classical thermal shock analysis of cracked functionally graded media

被引：3

作者：

Zarmehri, Navid Roshani ^{[1
]}

Shariati, Mahmoud ^{[1
]}

Nazari, Mohammad Bagher ^{[2
]}

Rokhi, Masoud Mahdizadeh ^{[2
]}

机构：

[1] Ferdowsi Univ Mashhad, Dept Mech Engn, Mashhad, Razavi Khorasan, Iran

[2] Shahrood Univ Technol, Fac Mech & Mechatron Engn, Shahrood, Iran

来源：

JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING | 2022年 / 44卷 / 11期

关键词：

Green-Lindsay theory; Crack; Functionally graded material; Thermal shock; Stress intensity factors; BOUNDARY-ELEMENT METHOD; STRESS INTENSITY FACTOR; THERMOELASTIC DEFORMATIONS; COUPLED THERMOELASTICITY; MICROMECHANICAL MODELS; MESHLESS ANALYSIS; CYLINDERS; FRACTURE; XFEM; IMPLEMENTATION;

D O I：

10.1007/s40430-022-03772-9

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this paper, the stress intensity factors (SIFs) are calculated for a crack in a functionally graded (FG) plate under transient thermal shock. In order to solve the problem and determine the displacement, temperature and stress fields, the Green-Lindsay (G-L) thermoelasticity theory is used. Extended Finite element method (XFEM) and Newmark time integration scheme are employed to model cracks and solve the governing equations. Considering the dissipated portion of internal energy in G-L theory, an interaction integral was developed for deriving the SIFs. Based on the resulting numerical data, the speed of the temperature and elastic waves has a significant effect on time variations of SIFs, especially when the thermal shock is applied. The results also show that FGM properties (the exponent P) have a great effect on the SIFs.

引用

页数：17

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