Progressive damage analysis of laminated composite (PDALC) - (A computational model implemented in the NASA COMET finite element code) version 2.0 Academic Article uri icon

abstract

  • A method for analysis of progressive failure in the Computational Structural Mechanics Testbed is presented in this report. The relationship employed in this analysis describes the matrix crack damage and fiber fracture via kinematics-based volume-averaged damage variables. Damage accumulation during monotonic and cyclic loads is predicted by damage evolution laws for tensile load conditions. The implementation of this damage model required the development of two testbed processors. While this report concentrates on the theory and usage of these processors, a complete listing of all testbed processors and inputs that are required for this analysis are included. Sample calculations for laminates subjected to monotonic and cyclic loads were performed to illustrate the damage accumulation, stress redistribution, and changes to the global response that occurs during the loading history. Residual strength predictions made with this information compared favorably with experimental measurements.

published proceedings

  • NASA Technical Memorandum

author list (cited authors)

  • Coats, T. W., Harris, C. E., Lo, D. C., & Allen, D. H.

complete list of authors

  • Coats, TW||Harris, CE||Lo, DC||Allen, DH

publication date

  • December 1998