Analysis of the dynamic responses for a pre-cracked three-point bend specimen

被引:44
作者
Jiang, FC [1 ]
Rohatgi, A [1 ]
Vecchio, KS [1 ]
Cheney, JL [1 ]
机构
[1] Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA
关键词
dynamic stress intensity factor; three-point bend specimen; shear deformation; rotary inertia; specimen oscillations;
D O I
10.1023/B:FRAC.0000035058.03627.30
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this paper, shear deformation and rotary inertia was introduced into the calculation of the dynamic stress intensity factor by means of solving the stiffness of a pre-cracked three-point bend specimen. A simple formula of dynamic stress intensity factor for a pre-cracked three-point bend specimen is derived using the vibration analysis method. Dynamic three-point bending tests were performed on a uniquely modified Hopkinson pressure bar, allowing the dynamic responses of the pre-cracked specimen, such as: the natural frequency, the period of apparent specimen oscillations, the dynamic loads, and the dynamic stress intensity factor to be analyzed experimentally and theoretically.
引用
收藏
页码:147 / 165
页数:19
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