Analytical determination of stress intensity factors in thick walled thermally loaded components

被引：4

作者：

Paarmann, M. ^{[1
]}

Sander, M. ^{[1
]}

机构：

[1] Univ Rostock, Inst Struct Mech, Albert Einstein Str 2, D-18059 Rostock, Germany

来源：

ENGINEERING FRACTURE MECHANICS | 2020年 / 235卷

关键词：

Analytical solution; Stress intensity factor; Thermal loading; WEIGHT-FUNCTIONS; CRACKS; MODEL;

D O I：

10.1016/j.engfracmech.2020.107125

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Due to an energy transition, crack growth under cyclic thermal loading becomes much more important in thick walled power plant components. Analytical descriptions of stress intensity factor behavior allow quick lifetime predictions. Those descriptions mainly exist for very short cooling down times. For that reason, the influence of cooling down times between 180 s and 3600 s on the stress intensity factor (SIF) of a cracked plate and hollow cylinder was investigated and different methods for an analytical description were developed. The temperatures range between 545 degrees C and 50 degrees C. A comparison of numerical and analytical solutions shows a good agreement. Moreover, the influence of the wall thickness and the a/c-ratio on the stress intensity factor (SIF) were examined and described.

引用

页数：14

共 20 条

[1] A closed-form method for integrating weight functions for part-through cracks subject to Mode I loading [J].

Anderson, Ted L. ;

Glinka, Grzegorz .

ENGINEERING FRACTURE MECHANICS, 2006, 73 (15) :2153-2165

[2]

Bueckner H, 1970, ZAMM, P751

[3] Hydro-thermal-mechanical analysis of thermal fatigue in a mixing tee [J].

Chapuliot, S ;

Gourdin, C ;

Payen, T ;

Magnaud, JP ;

Monavon, A .

NUCLEAR ENGINEERING AND DESIGN, 2005, 235 (05) :575-596

[4]

Edel K-O., 2015, EINFUHRUNG BRUCHMECH

[5] Thermal stress intensity factor expressions for functionally graded cylinders with internal circumferential cracks using the weight function method [J].

Eshraghi, Iman ;

Soltani, Nasser .

THEORETICAL AND APPLIED FRACTURE MECHANICS, 2015, 80 :170-181

[6] ON THE CALCULATION OF CRACK OPENING DISPLACEMENT FROM THE STRESS INTENSITY FACTOR [J].

FETT, T ;

MATTHECK, C ;

MUNZ, D .

ENGINEERING FRACTURE MECHANICS, 1987, 27 (06) :697-715

[7] UNIVERSAL FEATURES OF WEIGHT-FUNCTIONS FOR CRACKS IN MODE-I [J].

GLINKA, G ;

SHEN, G .

ENGINEERING FRACTURE MECHANICS, 1991, 40 (06) :1135-1146

[8] Impulse response model of thermal striping for hollow cylindrical geometries [J].

Jones, IS .

THEORETICAL AND APPLIED FRACTURE MECHANICS, 2005, 43 (01) :77-88

[9] Calculation of stress intensity factors and crack opening displacements for cracks subjected to complex stress fields [J].

Kiciak, A ;

Glinka, G ;

Burns, DJ .

JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME, 2003, 125 (03) :260-266

[10] Analysis of thermal stress intensity factors for cracked cylinders using weight function method [J].

Nabavi, S. M. ;

Ghajar, R. .

INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE, 2010, 48 (12) :1811-1823

← 1 2 →