Calculation of Notch Strains Under Multiaxial Nominal Loading

An approximate analytical method is developed to calculate strains at stress concentrators in structures of elastic-plastic, isotropic material subjected to proportional and nonproportional multiaxial nominal loading. The method uses anisotropic plasticity theory to define a structural yield surface in nominal stress space that incorporates both the isotopic material properties and the anisotropic geometry factors of the notch, and accounts for varying degrees of constrained plastic flow at the stress concentrator. Plastic strain increments at the stress concentrator and anisotropic work-hardening effects are then related to this yield surface using standard methods of plasticity.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Theoretical and Applied Mechanics

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Barkey, Mark Edward

Contributors dc:contributor

• Socie, Darrell F.

• Applied Mechanics
• Engineering, Mechanical

Identifier

(UMI)AAI9411562

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/72621