Experimental research of fatigue of metalworks elements at cyclic loading
V. V. Stoyanov
Odessa State Academy of Civil Engineering and Architecture
Annotation: The paper considers the Zhurkov longevity equation as applied to metalworks to forecast of limiting loading cycles. The predicted dependence of quantity, stress symbol8.pngand level of cycles of loading of N has been given in the paper. The frequency of loading cycles has been chosen as 4 cycles per second, and the loading pattern has been determined by an asymmetry coefficient symbol10.png. A diagram of proportion symbol8.png–symbol9.png for metal and carbon plastics points out that up to the period of transition of metal to the plastic stage there is metal and carbon plastics collaboration. The comparative analysis of the experimental results and calculations of samples of metal elements strengthen with carbon plastics at cyclic loading has been made. The atomic and molecular model of the crack and its development has been recommended to consider on the basis of quantum mechanics where the electrons can be represented in a form of a cloud with changing electronic density. The quantum pattern of the crack corresponds to the contemporary physical foundations of microcosm and open for further detailing.
Keywords: longevity equation of metalworks, quantum pattern of microcrack, carbon plastics.
Pages: 169-176.
Link for citation: Stoyanov, V. V. Experimental research of fatigue of metalworks elements at cyclic loading. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2010. – Vol. 6, N 3. – Р. 169-176. – URL: https://donnasa.ru/publish_house/journals/spgs/2010-3/05_stoyanov.pdf (date of access: 16.09.2024). (in Russian)
Vol. 6, N 3 (2010)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture