Effect of Pulse Shape on Spall Strength
- Авторы: Smirnov V.I.1, Petrov Y.V.2
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Учреждения:
- Emperor Alexander I St. Petersburg State Transport University
- Institute of Problems of Mechanical Engineering
- Выпуск: Том 59, № 2 (2018)
- Страницы: 303-309
- Раздел: Article
- URL: https://journals.rcsi.science/0021-8944/article/view/161024
- DOI: https://doi.org/10.1134/S002189441802013X
- ID: 161024
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Аннотация
This paper analyzes the effect of the time-dependent shape of a load pulse on the spall strength of materials. Within the framework of a classical one-dimensional scheme, triangular pulses with signal rise and decay portions and with no signal rise portions considered. Calculation results for the threshold characteristics of fracture for rail steel are given. The possibility of optimization of fracture by selecting a loading time with the use of an introduced characteristic of dynamic strength (pulse fracture capacity) is demonstrated. The study is carried out using a structure–time fracture criterion.
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Об авторах
V. Smirnov
Emperor Alexander I St. Petersburg State Transport University
Автор, ответственный за переписку.
Email: vsmirnov1@gmail.com
Россия, St. Petersburg, 198103
Yu. Petrov
Institute of Problems of Mechanical Engineering
Email: vsmirnov1@gmail.com
Россия, St. Petersburg, 199178
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