Three-dimensional finite element (3-D FEM) analysis has been performed on single-edge cracked low density polyethylene to investigate the fracture mechanics for the stationary and growing crack. Input of the mechanical behaviour to the FEM calculation is derived from the uncracked specimen. It is found that, without referring to either the plastic flow theory or to the plastic deformation theory, the 3-D FEM analysis predicts the load-displacement curve of the cracked samples, the crack extension to the applied stress curve and the development of the plastic zone to acceptable agreement with the experimental results. Both the stress and strain at the crack tip are three-dimensional while those remote from the crack tip are close to the two-dimensionsl state.
Посилання на статтю:
Three-dimensional finite element analysis of single-edge cracked low density polyethylene / Min-Diaw Wang, Takeshi Katagiri, Eiji Nakanishi* and Sadao Hibi // Polymer. – 1992. – Vol 33. – P. 4997-5004.