Mechanical and Electrical Modeling of Strands in Two ITER CS Cable Designs

Torre, A.; Bajas, Hugues; Ciazynski, D.

doi:10.1109/tasc.2013.2291161

Cited by 4 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various approaches can be used to calculate the elasto-plastic response of a material. Plastic modulus or power laws are usually used in literature for elasto-plastic modeling of superconducting strands [10]- [13], [16]. However, this kind of model is not well-adapted to describe cyclic behavior and more particularly the Bauschinger effect.…”

Section: Elasto-plastic Modelingmentioning

confidence: 99%

See 1 more Smart Citation

Mechanical Characterization and Modeling of a Powder-In-Tube MgB₂ Strand

Lenoir

Aubin

2017

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

The strain dependence of superconducting material is known to be responsible for the degradation of the electrical performance of cables. As such, their electrical optimization requires an understanding of their mechanical behavior. The present paper introduces a method for elasto-plastic modeling of commercial MgB2 multi-filamentary strands manufactured by the ex-situ powder-in-tube method. The model is based on a simplified representation of the structure, built using components' volume fractions and nano-indentation test data. Monotonic and cyclic tension-compression tests were performed on the strands before and after chemical dissolution of the Monel outer layer to provide a multi-scale experimental database. These tests were used to identify the parameters of the kinematic and isotropic hardening laws of the elasto-plastic model. The model intends to be subsequently used to simulate the electrical behavior of cables and define guidelines for the manufacturing process, cabling process and end-product operating condition.

show abstract

Section: Elasto-plastic Modelingmentioning

confidence: 99%

“…This method is applied to a commercial MgB2 strand. The constitutive equations are built for future use in multi-scale finite element simulations to predict the mechanical behavior [15] or the electrical behavior [16], [17].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Characterization and Modeling of a Powder-In-Tube MgB₂ Strand

Lenoir

Aubin

2017

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

show abstract

“…The global performances of the cable are simulated using models of the electrical and/or mechanical behavior of the cable structure (Torre et al, 2014;Manil et al, 2012). Given the complexity of various types of cables, the validation of these models is done by statistical comparison of the geometry of the models to the geometry of real cables obtained from tomography images.…”

Section: Introduction 1motivation and Scopementioning

confidence: 99%

Geometry Analysis of Superconducting Cables for the Optimization of Global Performances

Lermé

Dokládal

2016

Proceedings of the 5th International Conference on Pattern Recognition Applications and Methods

View full text Add to dashboard Cite

Superconducting cables have now become a mature technology for energy transport, high-field magnets (MRI, LHC) and fusion applications (ToreSupra, and eventually ITER and DEMO). The superconductors are extremely brittle and suffer from electrical damages brought by mechanical strain induced by electromagnetic field that they generate. An optimal wiring architecture, obtained by simulation, can limit these damages. However, the simulation is a complex process and needs validation. This validation is performed on real 3D samples by the means of image processing. Within this objective, this paper is, to our best knowledge, the first one to present a method to segment the samples of three types of cables as well as a shape and geometry analysis. Preliminary results are encouraging and intended to be later compared to the simulation results.

show abstract