FEM analysis of in-flight ice break-up

Zhang, Shiping; Kerdi, Oubai El; Khurram, R. A.; Habashi, Wagdi G.

doi:10.1016/j.finel.2012.03.005

Cited by 35 publications

(9 citation statements)

References 44 publications

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“…The phenomenon of fracture propagation is rarely discussed in piezoelectric de-icing papers. It is necessary to turn to the modeling of electro-impulse [33] [34], the cohesive zone model [33] and the energy balance approach [35] [36]. The energy balance approach is used in this paper because of its similarity with energy approaches to determine resonance modes.…”

Section: Modeling Of Piezoelectric De-icing Systems: State Of Thementioning

confidence: 99%

Electromechanical Resonant Ice Protection Systems: Analysis of Fracture Propagation Mechanisms

et al. 2018

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Recent research is showing growing interest in low-power electromechanical de-icing systems and, in particular, de-icing systems based on piezoelectric actuators. These systems use the vibrations generated by piezoelectric actuators at resonance frequencies to produce shear stress at the interface between the ice and the support or to produce tensile stress in the ice. This paper provides analytical and numerical models enabling a better understanding of the main de-icing mechanisms of resonant actuation systems. Different possible ice shedding mechanisms involving cohesive and adhesive fractures are analyzed with an approach combining modal, stress and crack propagation analyses. Simple analytical models are proposed to better understand the effects on ice shedding of the type of mode, ice thickness, or frequency with respect to cohesive and adhesive fractures.

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Section: Modeling Of Piezoelectric De-icing Systems: State Of Thementioning

confidence: 99%

Electromechanical Resonant Ice Protection Systems: Analysis of Fracture Propagation Mechanisms

et al. 2018

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“…24). 2 The value of this angle will depend on the physical properties of the interface between water and the surface.…”

Section: Surface Tension Effectsmentioning

confidence: 99%

“…On the numerical side, Scavuzzo et al performed a finite element analysis of the stress distribution due to aerodynamic forces in an accreted ice block [40]. More recently, Zhang et al have used a crack propagation and re-meshing technique to study ice break up [2]. However these studies did not take into account the effect of an ice protection system.…”

Section: Introductionmentioning

confidence: 99%

A mixed adhesion–brittle fracture model and its application to the numerical study of ice shedding mechanisms

Bennani

Villedieu

Salaün

2016

Engineering Fracture Mechanics

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a b s t r a c tThe understanding of ice shedding is of prime importance in the assessment of aeronautical ice protection systems. In this paper, the authors previously studied mechanism is extended to include adhesive debonding. It is based on pressure redistribution in the water film formed at the ice/airfoil interface. The numerical modelling of crack propagation is based on recent work on damage mechanics which provides a general framework. As for adhesive debonding an algebraic model is derived from general mechanical equilibrium relations. Numerical experiments are performed to study an adhesive-debonding/brittlefailure mode detachment, the results of which are discussed.

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“…Zhang et al [1] developed two-dimensional (2-D) and threedimensional (3-D) finite element analyses of ice breakup on wings and rotors. For wings, the 2-D flow solution, the clean grid, and the iced grid were used.…”

Section: Introductionmentioning

confidence: 99%

“…Scavuzzo et al [3] applied a simplified method to Zhang et al's [1] work, coupled with a statistical analysis. A uniform layer of ice was added to the inside of a rotating aluminum beam.…”

Section: Introductionmentioning

confidence: 99%

Helicopter Rotor Ice Shedding and Trajectory Analyses in Forward Flight

Anthony

Habashi

2021

Journal of Aircraft

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Ice accretion on a helicopter's aerodynamic surfaces during flight can lead to incidents and fatal accidents. An iced helicopter blade results in a decrease in stall angle, an increase in required torque, as well as potential damage from shed ice. While the high centrifugal forces on a rotor may serve as a natural deicing mechanism, they can also lead to uneven ice shedding, causing rotor imbalances or hitting other blades, the fuselage, or the tail rotor. Computational methods are important for predicting in-flight ice formation and are a vital tool in the design of ice protection systems. The objective of this paper is to present a computationally inexpensive methodology to determine for a helicopter in forward flight, following a period of ice accretion, rotor ice crack locations, shedding times, and potential impact zones.

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FEM analysis of in-flight ice break-up

Cited by 35 publications

References 44 publications

Electromechanical Resonant Ice Protection Systems: Analysis of Fracture Propagation Mechanisms

Electromechanical Resonant Ice Protection Systems: Analysis of Fracture Propagation Mechanisms

A mixed adhesion–brittle fracture model and its application to the numerical study of ice shedding mechanisms

Helicopter Rotor Ice Shedding and Trajectory Analyses in Forward Flight

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