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How to calculate Paris Law fracture property constant from ANSYS simulation?

Stress concentration

Crack tip opening displacement

Stress intensity factor

Crack growth resistance curve

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To calculate Paris Law fracture property constants from ANSYS simulation, a two-scale model approach can be utilized. This involves generating a micro-model using the Finite Element Method (FEM) to calculate the fatigue crack growth rate at the crack tip based on the Tanaka-Mura equation. Simultaneously, a macro-model is employed to calculate the stress intensity factor. By analyzing the relationship between crack growth rates and stress intensity factors for defined crack lengths, the Paris Law constants can be determined accurately. Additionally, finite element simulations can predict fatigue crack growth behavior by monitoring critical crack opening displacement and comparing the exponent in the Paris Law to published values, ensuring consistent results when plotted against the effective stress intensity factor range.

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Open access•Journal Article Simulation method to obtain Paris law of metallic materials with I-style crack and its applications Shi Kaikai, Cai Li-xun, Huang Xue-wei, Yao Di - Show less +3 more 01 Jan 2011-China Measurement & Test	Not addressed in the paper.
Journal Article•DOI Finite Element Simulation of Fatigue Crack Growth: Determination of Exponent m in Paris Law Seok Jae Chu, Conghao Liu - Show less +1 more 01 Jul 2012-Transactions of The Korean Society of Mechanical Engineers A 3 Citations	The Paris Law fracture property constant can be determined from ANSYS simulation by monitoring crack growth and comparing the exponent to published values, focusing on effective stress intensity factor range.
Book Chapter•DOI Numerical Determination of Paris Law Constants for Carbon Steel Using a Two-Scale Model Marijo Mlikota 05 Jan 2022	The Paris Law fracture property constant for carbon steel can be calculated from ANSYS simulations by using a two-scale model combining FEM for crack growth rate and stress intensity factor analysis.
Open access•Journal Article•DOI Numerical determination of Paris law constants for carbon steel using a two-scale model Marijo Mlikota, Steffen Staib, Siegfried Schmauder, Željko Božić - Show less +3 more 01 May 2017 27 Citations	The Paris law constants for carbon steel can be calculated from ANSYS simulations by using a two-scale model that combines micro-models for crack growth rates and macro-models for stress intensity factors.
Open access•Journal Article•DOI A new Bayesian approach to derive Paris\' law parameters from S-N curve data Sreehari Ramachandra Prabhu, Young-Joo Lee, Yeun Chul Park - Show less +2 more 01 Jan 2019-Structural Engineering and Mechanics 3 Citations	Not addressed in the paper.

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