Muravlev V. Estimation of а rigidity and deformation of wooden beams with allowance for sharer deplanation the cross-sections

The object - is rigidity and deformation state of beams with constant and changeable rigidity of cross-section made of anisotropic material - wood. The aim - working out the method of calculation on the basis of the stressed and deformed state mode, which takes into account shearing deformation due to the transversal strength influence and the investigation of the deformation characteristics taking into account anisotropy of wood. The methods are theoretical and experimental on the basis of the model of stressed and deformed state at the beams bend which takes into account the transversal strength influence and the wooden beams calculation methods which are based on that model. The innovation - is a new method of components determining of stressed and deformed state of the beams with constant and changeable rigidity depending on geometrical and structural parameters of the beams and physical properties of the materials taking into account the deplanation of cross sections due to the traversal forces action has been worked out. Practical results - the new methods were developed. Due to these methods it is possible to determine the deformed state of the beams with constant and changeable rigidity taking into account the cross-section deplanation. The results were introduced into practice in the course of investigation and while working out some measures on sanation of glue wooden constructions of the devise "GITT-12-30", which belongs to the object of the National treasure of Ukraine. The metioned above results can be also used when creating methods of strength calculation of composite glass and plastic blades of helicopters in Poltava. The field - is building.