Numerical Simulation of Ice Shedding From a Spinning Cone by Using Coupled CZM and XFEM

Abstract

In turbofan engine, ice accretion on spinning cone may lead to a decline in the engine aerodynamic performance and an increase of the vibration amplitude of the engine. An understanding of the mechanisms responsible for ice shedding process is necessary in order to optimize the spinning cone design and de-icing system to avoid hazardous ice shedding. In this paper, the Cohesive Zone Method (CZM) and the eXtended Finite Element Method (XFEM) are introduced to simulate the ice shedding process from a spinning cone. The CZM is applied to simulate the initiation and propagation of ice/spinning cone interface crack. The XFEM is introduced to model crack path inside the ice. This research method could provide a reference for ice shedding analysis of other parts of aero-engine. The research result could also be used to further study on optimization of the electro-thermal and hot-air de-icing system and ice shedding trajectory and impact simulations.

Measurement and FEM of ice adhesion to the downstream pipe of an air cycle machine

“…To better model ice shedding, CZM can be used in couple with other models. For example, a combination of CZM and extended finite element method (XFEM), for example, as presented in the paper by Fu et al [31], could ensure a more accurate prediction.…”

“…Journal Pre-proof condition was not made in the paper, and the assumption for the cohesive fracture path was far from accurate. Subsequently, Fu [31] and Chen [32] improved their model by introducing the extended finite element method (XFEM) and an iterative method coupling stress, ice shape and crack propagation together, and used it to predict ice shedding from the inlet cone of an engine. Interestingly, CZM was introduced to study the influence of surface roughness on tensile strength of ice/aluminium interface [33].…”