Domain-Integral Methods for Computation of Fracture-Mechanics Parameters in Three-Dimensional Functionally-Graded Solids

This work first develops and applies a domain integral method to compute J-integral and stress intensity factor values along crack fronts in FGM configurations under mode-I thermo-mechanical loading. The proposed domain integral formulation accommodates both linear-elastic and deformation-plastic behavior in FGMs. Next discussed is the extension of interaction-integral procedures to compute directly mixed-mode stress intensity factors and T-stresses along planar, curved cracks in FGMs under linear-elastic loading. The investigation addresses effects upon interaction integral procedures imposed by crackfront curvature, applied crack-face tractions and material nonhomogeneity. Additional considerations for T-stress evaluation include the influence of mode mixity and computation of the anti-plane shear component of non-singular stress, T13.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Civil and Environmental Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Walters, Matthew C.

Contributors dc:contributor

• Paulino, Glaucio H.
• Dodds, Robert H., Jr.

• Engineering, Civil

Language dc:language

eng

Identifier

(MiAaPQ)AAI3182412

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/83268