Estimation of the residual resource of wooden structures by changing geometric parameters of the cross-section
| Autor: | Marina Gravit, Dmitry Korolkov, Maxim Aleksandrovskiy |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
lcsh:GE1-350
Bending (metalworking) Group (mathematics) business.industry 02 engineering and technology Structural engineering 021001 nanoscience & nanotechnology Residual 01 natural sciences Cross section (physics) Resource (project management) 0103 physical sciences Service life Macro 0210 nano-technology business 010301 acoustics lcsh:Environmental sciences Energy (signal processing) Mathematics |
| Zdroj: | E3S Web of Conferences, Vol 244, p 04010 (2021) |
| ISSN: | 2267-1242 |
| DOI: | 10.1051/e3sconf/202124404010 |
| Popis: | In this article, the authors propose a method for assessing the residual resource by changing the geometric parameters of wooden structures. A general formula for estimating the maximum service life is presented. Then a number of special cases are considered when calculating the ultimate service life for the first group of limiting states. As a result, formulas were derived for calculating the ultimate service life for various design cases: centrally tensioned, centrally compressed, bending members, members subject to an axial force with bending. The author considered the determination of the rate of change in geometric parameters at the macrolevel (visually observed changes) and microscopic (microcracks, breaks of bonds between atoms). Formulas for determining the rate of change of geometric parameters at the macro and micro levels are proposed. The advantages and disadvantages of this method are presented. The scope of its application is indicated. |
| Databáze: | OpenAIRE |
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