Multi-physics tool for predicting fatigue crack propagation using Phase field models

Period of Performance: 04/26/2016 - 10/31/2016

$79.9K

Phase 1 STTR

Recipient Firm

Advanced Cooling Technologies, Inc.
1046 New Holland Ave Array
Lancaster, PA 17601
Firm POC
Principal Investigator

Research Institution

Pennsylvania State University
110 Technology Center Building
University Park, PA 16802
Institution POC

Abstract

Understanding fatigue crack initiation and propagation is critical for life-prediction of aircraft components which are exposed to complex loading conditions. Traditional approaches are based on analytical predictions of linear elastic fracture mechanics (LEFM), or numerical simulations using finite element/boundary element. All those methods have difficulties studying crack growth, and need complicated re-meshing algorithms. In this work, Advanced Cooling Technologies, Inc. (ACT) proposes to develop a novel computational framework for accurate modeling of crack/fatigue initiation and growth in solids, using the framework of phase-field modeling. The approach will yield the crack topology in response to loading conditions, by means of the solution of the governing equations which are cast in a minimization problem of the total energy from elastic, plastic contributions. Phase I will develop the underlying theory, simulation framework and demonstrate its use.