Failure Modeling of Titanium-6Al-4V and 2024-T3 Aluminum with the Johnson-Cook Material Model

Kay, G.

Lawrence Livermore National Laboratory

关键词: Aluminium;    Lawrence Livermore National Laboratory;    Engines;    Strain Rate;    Simulation;   

DOI  :  10.2172/15006359
RP-ID  :  UCRL-ID-149880
RP-ID  :  W-7405-ENG-48
RP-ID  :  15006359

美国|英语

来源: UNT Digital Library

【 摘 要 】

A validated Johnson-Cook model could be employed to perform simulations that conform to FAA standards for evaluating aircraft and engine designs for airworthiness and containment considerations. A previous LLNL report [1] described the motivation for using the Johnson-Cook material model in simulations involving engine containment and the effect of uncontained engine debris on aircraft structures. In that report, experimental studies of the deformation and failure behavior of Ti-6Al-4V and 2024-T3 aluminum at high strain rates and large strains were conducted. The report also describes the generation of material constants for the Johnson-Cook strength model. This report describes the determination and validation of parameters for Ti-6Al-4V and 2024-T3 aluminum that can be used in the failure portion of the Johnson-Cook material.