Application of nonlocal criteria for destruction in problems with a nonuniform stress field


Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

The dependence of the critical load on the degree of nonuniformity of the stress field is considered on the example of polymethylmethacrylate beams and plates with a round hole or a sharp notch. It is proposed to use nonlocal criteria for brittle fracture to describe the behavior of a nonuniformly stressed material. Among the criteria considered, the structural criterion is the most universal, because, in this case, the distance parameter d is least dependent on the test configuration. The distance parameters in problems with a regular concentrator are of the same order of magnitude, as in problems with a singular stress concentrator. A further modification of the criterion that takes into account the properties of the fracture process will probably make it possible to obtain a unique value for the length parameter for any degree of nonuniformity of the stress field.

Авторлар туралы

A. Chevrychkina

Saint Petersburg State University

Хат алмасуға жауапты Автор.
Email: Anastasiia.Che@gmail.com
Ресей, St. Petersburg, 199034

A. Gruzdkov

Saint Petersburg State University

Email: Anastasiia.Che@gmail.com
Ресей, St. Petersburg, 199034

Yu. Petrov

Saint Petersburg State University

Email: Anastasiia.Che@gmail.com
Ресей, St. Petersburg, 199034

Қосымша файлдар

Қосымша файлдар
Әрекет
1. JATS XML

© Pleiades Publishing, Ltd., 2017