Acta Mechanica Solida Sinica

, Volume 28, Issue 5, pp 578–591

# Asymptotic Solutions of Mode I Steady Growth Crack in Materials Under Creep Conditions

Article

## Abstract

An asymptotic analysis is made on problems with a steady-state crack growth coupled with a creep law model under tensile loads. Asymptotic equations of crack tip fields in creep materials are derived and solved numerically under small scale conditions. Stress and strain functions are adopted under a polar coordinate system. The governing equations of asymptotic fields are obtained by inserting the stress field and strain field into the material law. The crack growth rate rather than fracture criterion plays an important role in the crack tip fields of materials with creep behavior.

## Key Words

asymptotic analysis steady-state growth small scale conditions creep materials

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## Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2015

## Authors and Affiliations

1. 1.College of Aerospace and Civil EngineeringHarbin Engineering UniversityHarbinChina