抄録
Abstract. Simulating large deformations of wood is difficult because the deformation of wood is complex, owing to the hierarchical structure of cells and annual rings. This study presents a finite element method (FEM) analysis that uses a lattice model to reproduce large wood deformations. The proposed lattice model comprises earlywood and latewood cells. The appropriate lattice geometry, considering the cell wall thickness and earlywood volume fraction, is investigated by comparing FEM analysis results with experimental results obtained via a lateral compression test. Consequently, the deformed shape and load–displacement (F–δ) diagram varied, depending on the annual ring tilt angle to the compression direction in the experiment. This anisotropy of the deformed shape was reproduced by the FEM analysis via a lattice model with an appropriate cell wall thickness and earlywood volume fraction. The F–δ diagram of the FEM was similar to that of the experiment.