Damage Analysis of Superconducting Composite Wire with Bridging Model

• 来源期刊: 固体力学学报（英文版）
• 年，卷（期）: 2018,（1）
• 页码范围: 19-31
• 页数: 13页
• 语种: 英文

摘要

The multi-filamentary Bi2Sr2CaCu2O8+x (Bi-2212) round wires are made of superconducting filaments,metal Ag and Ag alloy,which are typical composite structure.Since the filament is brittle,there are various defects and cracks in the Bi-2212 round wire after heat treatment.In this paper,we assume that the filaments in the wire are uniformly arranged.Adopting the bridging model which is often used in the fiber-reinforced composite,we calculate the ultimate strength of the round wire.The effects of the volume fraction,elastic modulus and interface shear strength are discussed in detail.