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CORRELATION BETWEEN J-INTEGRAL AND CMOD IN IMPACT BEHAVIOR OF 3-POINT BEND SPECIMEN  

Han, M.S. (School of Mechanical and Automotive Engineering, Keimyung University)
Cho, J.U. (Faculty of Mechanical and Automotive Engineering, Gongju National University)
Publication Information
International Journal of Automotive Technology / v.7, no.3, 2006 , pp. 337-343 More about this Journal
Abstract
Numerical calculations are made in order to find a possible correlation between the J-integral and the crack mouth opening displacement(CMOD) in dynamic nonlinear fracture experiments of 3-point bend(3PB) specimens. Both elastic-plastic and elastic-viscoplastic materials are considered at different impact velocities. The J-integral may be estimated from the crack mouth opening displacement which can be measured directly from photographs taken during dynamic experiments.
Keywords
Dynamic nonlinear fracture; 3PB specimen; Crack mouth opening displacement; Viscoplastic property; J-integral;
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