PSI - Issue 72

Denys Mykhailovskyi et al. / Procedia Structural Integrity 72 (2025) 315–322

317

Fig. 1. Wood deformation diagrams

In Fig. 2, the tension and compression strain and stresses diagrams for wood and stress-deformed state of a typical straight wood beam are described. The high flexibility of wooden elements is caused by a small modulus of elasticity (MOE) of wood, as well as rheological properties (creep and relaxation). To reduce the influence of rheological properties on the wooden element, as well as to reduce the flexibility of wooden structures, it can be use reinforcement of structures with high stiffness characteristics.

Fig. 2. Stress-deformation state at different stages of a bending straight wooden element

Equilibrium equation for calculating the cross-section of a bending element

 

   

0;

M N



x

(1)

0.



z