Theoretical analysis of 4-ENF tests for mode II fracturing in wood by finite element method

In this note, the four-point bend end notched flexure tests of wood of the specimen with an I-shaped cross-section were simulated by the finite element method. It was suggested that the relation between the mode II energy release rate and crack length was appropriately obtained by the data reduction method proposed in a previous work [Yoshihara H. Mode II R-curve of wood measured by 4-ENF test. Engng Fract Mech 2004;71:2065–77].