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Title: Ductile failure X-prize.

Abstract

Fracture or tearing of ductile metals is a pervasive engineering concern, yet accurate prediction of the critical conditions of fracture remains elusive. Sandia National Laboratories has been developing and implementing several new modeling methodologies to address problems in fracture, including both new physical models and new numerical schemes. The present study provides a double-blind quantitative assessment of several computational capabilities including tearing parameters embedded in a conventional finite element code, localization elements, extended finite elements (XFEM), and peridynamics. For this assessment, each of four teams reported blind predictions for three challenge problems spanning crack initiation and crack propagation. After predictions had been reported, the predictions were compared to experimentally observed behavior. The metal alloys for these three problems were aluminum alloy 2024-T3 and precipitation hardened stainless steel PH13-8Mo H950. The predictive accuracies of the various methods are demonstrated, and the potential sources of error are discussed.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
USDOE
OSTI Identifier:
1029764
Report Number(s):
SAND2011-6801
TRN: US201201%%174
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; ALUMINIUM; CRACK PROPAGATION; FORECASTING; FRACTURES; PRECIPITATION; SANDIA NATIONAL LABORATORIES; SIMULATION; STAINLESS STEELS

Citation Formats

Cox, James V., Wellman, Gerald William, Emery, John M., Ostien, Jakob T., Foster, John T., Cordova, Theresa Elena, Crenshaw, Thomas B., Mota, Alejandro, Bishop, Joseph E., Silling, Stewart Andrew, Littlewood, David John, Foulk, James W., III, Dowding, Kevin J., Dion, Kristin, Boyce, Brad Lee, Robbins, Joshua H., and Spencer, Benjamin Whiting. Ductile failure X-prize.. United States: N. p., 2011. Web. doi:10.2172/1029764.
Cox, James V., Wellman, Gerald William, Emery, John M., Ostien, Jakob T., Foster, John T., Cordova, Theresa Elena, Crenshaw, Thomas B., Mota, Alejandro, Bishop, Joseph E., Silling, Stewart Andrew, Littlewood, David John, Foulk, James W., III, Dowding, Kevin J., Dion, Kristin, Boyce, Brad Lee, Robbins, Joshua H., & Spencer, Benjamin Whiting. Ductile failure X-prize.. United States. doi:10.2172/1029764.
Cox, James V., Wellman, Gerald William, Emery, John M., Ostien, Jakob T., Foster, John T., Cordova, Theresa Elena, Crenshaw, Thomas B., Mota, Alejandro, Bishop, Joseph E., Silling, Stewart Andrew, Littlewood, David John, Foulk, James W., III, Dowding, Kevin J., Dion, Kristin, Boyce, Brad Lee, Robbins, Joshua H., and Spencer, Benjamin Whiting. Thu . "Ductile failure X-prize.". United States. doi:10.2172/1029764. https://www.osti.gov/servlets/purl/1029764.
@article{osti_1029764,
title = {Ductile failure X-prize.},
author = {Cox, James V. and Wellman, Gerald William and Emery, John M. and Ostien, Jakob T. and Foster, John T. and Cordova, Theresa Elena and Crenshaw, Thomas B. and Mota, Alejandro and Bishop, Joseph E. and Silling, Stewart Andrew and Littlewood, David John and Foulk, James W., III and Dowding, Kevin J. and Dion, Kristin and Boyce, Brad Lee and Robbins, Joshua H. and Spencer, Benjamin Whiting},
abstractNote = {Fracture or tearing of ductile metals is a pervasive engineering concern, yet accurate prediction of the critical conditions of fracture remains elusive. Sandia National Laboratories has been developing and implementing several new modeling methodologies to address problems in fracture, including both new physical models and new numerical schemes. The present study provides a double-blind quantitative assessment of several computational capabilities including tearing parameters embedded in a conventional finite element code, localization elements, extended finite elements (XFEM), and peridynamics. For this assessment, each of four teams reported blind predictions for three challenge problems spanning crack initiation and crack propagation. After predictions had been reported, the predictions were compared to experimentally observed behavior. The metal alloys for these three problems were aluminum alloy 2024-T3 and precipitation hardened stainless steel PH13-8Mo H950. The predictive accuracies of the various methods are demonstrated, and the potential sources of error are discussed.},
doi = {10.2172/1029764},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Sep 01 00:00:00 EDT 2011},
month = {Thu Sep 01 00:00:00 EDT 2011}
}

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