Numerical simulation and validation of electro-impulse de-icing on a leading edge structure

被引：16

作者：

Sommerwerk, H. ^{[1
]}

Luplow, T. ^{[1
]}

Horst, P. ^{[1
]}

机构：

[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Aircraft Design & Lightweight Struct IFL, Hermann Blenk Str 35, D-38108 Braunschweig, Germany

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS | 2020年 / 105卷

关键词：

Electro-impulse de-icing; Finite element method; Cohesive zone modeling; Multiple cracking; ICE;

D O I：

10.1016/j.tafmec.2019.102392

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The Electro Impulse De-Icing (EIDI) system offers an energy-efficient way of mechanically de-icing aircraft. Structural deformations induced by electromagnetic fields remove the accreted ice, and during this failure process different phenomena can be observed. A complex pattern of multiple cracks arises inside the ice layer, whereas in the ice-structure interface delaminations occur. This paper presents a numerical approach to model the combined failure process and compares it to experimental results. Cohesive zones are chosen to describe the complex fracture processes inside the ice layer while an interfacial shear stress criterion is used to determine the ice detachment from the structure. The numerical model is applied to a leading edge structure and the simulations are validated by comparison with experimental studies performed under realistic icing conditions in an icing wind tunnel. The results of several consecutive de-icing impulses show that the dynamic structural behavior and de-icing process can be approximated very well by the simulations. Furthermore, different approaches to model the complex accreted ice shape are proposed and the results are compared to each other.

引用

页数：8

共 23 条

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