Research of Stress Assessment Based on Singularity Strength

Song Gao; Li Xu; Da Zheng Wang; Fei Ma

doi:10.4028/www.scientific.net/AMM.496-500.1147

Paper Titles

Design of Vibration Isolation Device for Ship Power Equipment and Investigation on its Dynamic Properties
p.1129

Research on Cushion Characteristics of Self-Inflating Buffering Airbag
p.1134

Vibration Testing System for Ventilator Based on Virtual Instrument
p.1139

Study of Frequency Conversion Energy-Saving Reconstruction for Central Air-Conditioning
p.1143

Research of Stress Assessment Based on Singularity Strength
p.1147

Structural Analysis and Optimization of Electric Scraper Drive Axle Housing under Multi-Load
p.1152

RF Coaxial Open Standard Calibration Technology Research
p.1157

Wavefront Aberration Detection: A New Perspective
p.1164

Finite Element Modeling of Optical Path Length Control Device for Laser Gyroscope
p.1169

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 496-500Research of Stress Assessment Based on Singularity...

Research of Stress Assessment Based on Singularity Strength

Abstract:

Hull structure has sharp corners with singularity which tends to produce fatigue cracks and cause structural damages. Its not straightforward to assess FE analysis results of stiffened plating structures because of the stress singularities that are inherent in the overall geometry. This paper concentrates on the analysis of a simple planar right angled cruciform corner and a 135-degree sheet corner through a series of FE analyses using ANSYS. The aim is to try and provide an understanding of the nature of the singularities. Through the understanding a simple method is proposed to estimate the singular stress at the corners using as named as singularity strength which is based on notch-stress intensity factor theory. Finally the estimation methods of as are given for the 2D corners.

You might also be interested in these eBooks

Frontiers of Manufacturing and Design Science IV

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 496-500)

Pages:

1147-1151

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.496-500.1147

Citation:

Cite this paper

Online since:

January 2014

Authors:

Song Gao*, Li Xu*, Da Zheng Wang, Fei Ma

Keywords:

Notch-Stress Intensity Factor, Singularity, Singularity Strength, Stress Distribution

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] Dong P. A structural stress definition and numerical implementation for fatigue analysis of welded joints[J]. International Journal of Fatigue, 2001, 23: 865-876.

DOI: 10.1016/s0142-1123(01)00055-x

Google Scholar

[2] Gross R, Mendelson A. Plane elastostatic analysis of V-notched plates[J]. Fracture Mech, 1972, 8: 267-327.

DOI: 10.1007/bf00186126

Google Scholar

[3] Lazzarin P, Tovo R A. Notch stress intensity factor approach to the stress analysis of welds[J]. Fatigue Fract Engng Mater Struct, 1998, 21: 1089–1103.

DOI: 10.1046/j.1460-2695.1998.00097.x

Google Scholar

[4] Lazzarin P. and Livieri P. Notch stress intensity factors and fatigue strength of aluminium and steel welded joints [J]. Fatigue, 2001, 23: 225-232.

DOI: 10.1016/s0142-1123(00)00086-4

Google Scholar

[5] Williams M L. Stress singularities resulting from various boundary conditions in angular plates in extension[J]. Journal of Applied Mechanics, 1952, 19: 526-528.

DOI: 10.1115/1.4010553

Google Scholar

[6] Paris P C, Sih G C. Stress analysis of cracks, in: Fracture toughness testing and its applications[J]. ASTM Special Technical publication, 1965, No. 381: 62.

Google Scholar