THE STRESSED AND DEFORMED STATE OF BENDING WOODEN ELEMENTS UNDER INFLUENCE OF AN AGGRESSIVE ACID ENVIRONMENT TAKING INTO ACCOUNT COMPLETE DIAGRAMS OF THE DEFORMATION MATERIAL
Abstract
Wood can be subjected to various aggressive influences, including acidic ones. Various materials, including wood, can experience such effects at enterprises of the food and chemical industries and many others. It is more chemically resistant compared to metal, concrete and reinforced concrete. One of the most widespread are bending wooden elements and structures that can work under such operating conditions. Currently, the influence of an acidic environment on such elements is insufficiently studied, and the methods of calculation under such operating conditions, which take into account the actual mechanical properties of the material, are not fully presented.
An analysis of literary sources on calculation methods of bending wooden elements taking into account the factor of aggressive acidic environment was carried out. It was found that there are practically no methods for calculating elements under such operating conditions.
The main tool for creating a model of the operation of a bending element in an aggressive acid environment is the following prerequisites:
- all necessary equilibrium equations that arise in the cross-section of the bending element;
- deformation occurs according to a linear law;
- the use of true functions of the full deformation diagrams of the compressed and stretched zones of the element.
Therefore, we will analyze the work of such an element in the following sequence:
- it is necessary to determine the strength of the bending element and establish the main factors affecting it;
- to propose a general method for determining the stiffness of an element and also to establish the factors that influence it.
- to develop calculation methods for comparing the bearing capacity and stiffness of wooden bending elements.
The actual stress-strain state of a bending wooden element is established, taking into account the action of an aggressive acid medium on it, taking into account the actual mechanical properties of the material and the theories of the mechanics of a deformable solid body.
In the future, it is necessary to develop a methodology for calculating such elements under the action of an aggressive acid environment.
