Numerical simulations of fast fracture in four cases of dynamic tear test experiments on 4340 steel are performed using a moving singular finite element method. The experimentally measured crack propagation histories are used as input data to the so-called generation phase simulations to determine the dynamic stress intensity factor histories. In most numerical analyses of dynamic fracture specimens, the load and support points have been treated as fixed boundary conditions. In the present paper, more realistic boundary conditions (contact/no-contact), in which the specimen can separate from the tup and the supports are introduced. The results are also discussed in the light of current controversies surrounding the dynamic fracture toughness properties governing crack propagation under impact loading.
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An Analysis of Dynamic Fracture in an Impact Test Specimen
T. Nishioka,
T. Nishioka
Center for the Advancement of Computational Mechanics, School of Civil Engineering, Georgia Institute of Technology, Atlanta, Ga. 30332
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M. Perl,
M. Perl
Center for the Advancement of Computational Mechanics, School of Civil Engineering, Georgia Institute of Technology, Atlanta, Ga. 30332
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S. N. Atluri
S. N. Atluri
Center for the Advancement of Computational Mechanics, School of Civil Engineering, Georgia Institute of Technology, Atlanta, Ga. 30332
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T. Nishioka
Center for the Advancement of Computational Mechanics, School of Civil Engineering, Georgia Institute of Technology, Atlanta, Ga. 30332
M. Perl
Center for the Advancement of Computational Mechanics, School of Civil Engineering, Georgia Institute of Technology, Atlanta, Ga. 30332
S. N. Atluri
Center for the Advancement of Computational Mechanics, School of Civil Engineering, Georgia Institute of Technology, Atlanta, Ga. 30332
J. Pressure Vessel Technol. May 1983, 105(2): 124-131 (8 pages)
Published Online: May 1, 1983
Article history
Received:
September 21, 1981
Revised:
February 11, 1983
Online:
November 5, 2009
Citation
Nishioka, T., Perl, M., and Atluri, S. N. (May 1, 1983). "An Analysis of Dynamic Fracture in an Impact Test Specimen." ASME. J. Pressure Vessel Technol. May 1983; 105(2): 124–131. https://doi.org/10.1115/1.3264253
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