Work

A Simulation and Experimental Study of the Current Contact Notch Structure on the Fracture Capacity of Pyro-Breakers

Year: 2025

Type: article

Abstract: The current contact of pyro-breaker must rapidly interrupt current when the superconducting magnet loses its superconductivity. To enhance the microsecond-scale current-breaking capability of pyro-breaker in nuclear fusion devices, this study investigates the impact of current contact notch structures on dynamic fracture behavior. Through multi-physics field modeling and controlled explosive testing, it is revealed for the first time that the rectangular notch structure demonstrates enhanced fracture performance relative to the V-notch configuration under explosive impact loading conditions, achieving a 27.3% reduction in fracture initiation time alongside a 47.5% increase in crack propagation width. These findings provide a robust theoretical basis for designing pyro-breaker with enhanced fast-break capabilities in fusion devices.

Source: Modelling—International Open Access Journal of Modelling in Engineering Science

DOI: 10.3390/modelling6040159

Authors: Jifei Ye, Guanghong Wang, Hua Li, Zhiquan Song, Peng Fu

Institutions: University of Science and Technology of China, Chinese Academy of Sciences, Hefei Institutes of Physical Science, Institute of Plasma Physics

Language: English

Topic: Superconducting Materials and Applications

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $1,207