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A Finite Element Study Relating Load-Penetration Curves and Indentation Topography to Yield and Post-Yield Constitutive Behavior
B. Schroeter
MY. He
GE. Lucas
GR. Odette
出版
ASTM International
, 2002
URL
http://books.google.com.hk/books?id=y1l8zgEACAAJ&hl=&source=gbs_api
註釋
Finite element simulations of ball and cone indentation tests were performed with systematic variations in the input constitutive laws. The ball indentation simulations were used to evaluate the assumptions and applicability of proposed analytical methods to extract the constitutive laws from instrumented load-penetration data. These methods were found to provide good approximations for a small, but useful, range of strain-hardening rates. However, significant differences were found for low (elastic-perfectly plastic) and high (hardening exponents > 0.2) strain-hardening laws and when significant hardening occurs at small plastic strains (
