2.1. Materials
Regarding the input properties of the materials, the parameters of
European beech (Fagus sylvatica L.),were used for hardmaterials and Eurasian
aspen (Populus tremula L.) for the soft material. The physical and mechanical
properties of these species were suitable for the modeling of both hard and
soft materials. Samples, with the dimensions of 20 × 20 × 410 mm, were
prepared. A total of 30 samples of each wood species was used for the measurements.
The samples were conditioned to 12% moisture content in a conditioning
chamber KBWF 720 (E5.2) (Binder; Germany), with relative
humidity of 65 ± 5% and temperature of 20 ± 2 °C. The moisture content determination
was carried out in accordance with ISO 13061-1 [10]