3D modelling of material flow in friction stir welding using movable cellular automaton method

Alexey Yu Smolin, Galina M. Eremina, Sergey G. Psakhie

Результат исследования: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

The paper is devoted to the theoretical investigation of the peculiarities of material flow taking place in friction stir welding (FSW). The investigation was based on 3D computer simulation by the movable cellular automaton (MCA) method, which is a representative of the particle methods in mechanics of materials. Usually, material flow in FSW is simulated based on computational fluid mechanics, which assumes that the material is a continuum and does not take into account the material structure. MCA considers a material as an ensemble of bonded particles. Breaking of inter-particle bonds and formation of new bonds enables simulation of crack nucleation and healing, as well as mas mixing and microwelding. The simulation results showed that using pins of simple shape (cylinder, cone, pyramid) without shoulder results in small scattered displacements of the plasticised material in the workpiece thickness direction. Nevertheless, the optimal ratio of the longitudinal velocity to the rotational speed allows transporting of the welded material around the pin several times and producing the joint of good quality. Applying additional ultrasonic vibration to the pin may lead to better mixing of the plasticized material behind the pin.

Язык оригиналаАнглийский
Заголовок главной публикации5th International Conference on Particle-Based Methods - Fundamentals and Applications, PARTICLES 2017
РедакторыE. Onate, P. Wriggers, T. Zohdi, M. Bischoff, D.R.J. Owen
ИздательInternational Center for Numerical Methods in Engineering
Страницы420-428
Количество страниц9
ISBN (электронная версия)9788494690976
Статус публикацииОпубликовано - 1 янв 2017
Событие5th International Conference on Particle-Based Methods - Fundamentals and Applications, PARTICLES 2017 - Hannover, Германия
Длительность: 26 сен 201728 сен 2017

Конференция

Конференция5th International Conference on Particle-Based Methods - Fundamentals and Applications, PARTICLES 2017
СтранаГермания
ГородHannover
Период26.9.1728.9.17

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Цитировать

Smolin, A. Y., Eremina, G. M., & Psakhie, S. G. (2017). 3D modelling of material flow in friction stir welding using movable cellular automaton method. В E. Onate, P. Wriggers, T. Zohdi, M. Bischoff, & D. R. J. Owen (Ред.), 5th International Conference on Particle-Based Methods - Fundamentals and Applications, PARTICLES 2017 (стр. 420-428). International Center for Numerical Methods in Engineering.