LIU Zaihua Huazhong University of Science and Technology
,
Wuhan
,
China ZHAO Dongli Bureau of Complete Sets of Equipment
,
State Machinery Commission
,
Beijing
,
China Dept.of Mechanics
,
Huazhong University of Science and Technology
,
Yujiashan
,
Wuhan
,
China
金属学报(英文版)
The size effect of tension round bars with circumferential crack was described and used to measure the plane-strain fracture toughness K_(1c) of median or low strength steel.The size of cylindrical specimen required for K_(1c) measurement is much smaller than that of standard specimen.The J-integral values of the cylindrical sqecimens were calculated to characterize the size effect.The finite element calculution and fracture morphology analysis have been conducted to eyplain the fact that smaller cylindrical specimen could be used to measure K_(1c) of median or low strength steel.
关键词:
median or low strength steel
,
null
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null
