Analysis of the Anti-Bird Impact Performance of Typical Beam-Edge Structure Based on ANSYS/LS-DYNA

Zhang, Yong Kang; Li, Yu Long

doi:10.4028/www.scientific.net/amr.33-37.395

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…Numerous researchers used different approaches to closely approximate the material response of bird. Some authors modeled the bird with elastoplastic material law along with certain failure criteria [12,[18][19][20], while others used equation of state approach for constitutive modeling with pressure volume behavior of water [21][22][23][24]. Bird is mostly composed of water.…”

Section: Bird Materials Modelmentioning

confidence: 99%

FE Analysis of Dynamic Response of Aircraft Windshield against Bird Impact

Dar

Zhang

2013

International Journal of Aerospace Engineering

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Bird impact poses serious threats to military and civilian aircrafts as they lead to fatal structural damage to critical aircraft components. The exposed aircraft components such as windshields, radomes, leading edges, engine structure, and blades are vulnerable to bird strikes. Windshield is the frontal part of cockpit and more susceptible to bird impact. In the present study, finite element (FE) simulations were performed to assess the dynamic response of windshield against high velocity bird impact. Numerical simulations were performed by developing nonlinear FE model in commercially available explicit FE solver AUTODYN. An elastic-plastic material model coupled with maximum principal strain failure criterion was implemented to model the impact response of windshield. Numerical model was validated with published experimental results and further employed to investigate the influence of various parameters on dynamic behavior of windshield. The parameters include the mass, shape, and velocity of bird, angle of impact, and impact location. On the basis of numerical results, the critical bird velocity and failure locations on windshield were also determined. The results show that these parameters have strong influence on impact response of windshield, and bird velocity and impact angle were amongst the most critical factors to be considered in windshield design.

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Section: Bird Materials Modelmentioning

confidence: 99%

FE Analysis of Dynamic Response of Aircraft Windshield against Bird Impact

Dar

Zhang

2013

International Journal of Aerospace Engineering

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“…Therefore, through the limited measurement results with error, accurate inversion of the bird mechanical parameters is unrealistic, only a certain approximation of the actual situation can be obtained. Through the pre-analysis and prior knowledge, the number of the parameters to be inversed can be reduced to an acceptable level, which will contribute to problem solving and improve the reliability of the results [16]. Fig.…”

Section: Discussionmentioning

confidence: 99%

A Method to Identify Bird Constitutive Model and its Parameters

Zhang

2013

AMM

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Identification of a bird constitutive model and its parameters is a very difficult work in bird-impact coupling solution. In order to identify the constitutive model and the parameters simultaneously, an inversion analytic model for the bird material parameters is given based on penalty function method and nonlinear optimization principle, and then combining the model preferential criterion proposed in this paper, the identification system of the bird constitutive model is established with ANSYS Parametric Design Language (APDL). Finally, the feasibility and practicability of this identification method are verified by an example.

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“…Moreover, the identification of a bird constitutive model and the corresponding material parameters is difficult. Several authors used an elastic-plastic bird constitutive model with a defined failure strain [3][4][5], while others highlighted the limitations of this simplified material law [6]. It was observed that no fluid-like flow response can be achieved with such an elastic-plastic model, only if the shear modulus G is set very low [7].…”

Section: Introductionmentioning

confidence: 99%

Inversion for Constitutive Model Parameters of Bird in Case of Bird Striking

et al. 2022

Shock and Vibration

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The strike between flying birds and airplanes results in the unacceptable losses of aircraft structures. The normal approach to evaluate the bird impact resistance is the combined full-scale experimental-numerical study. However, the simulation results from the current available bird constitutive models are usually not in good agreement with the experimental data. Establishing a reasonable bird constitutive model is difficult and significant to the simulation of the bird striking process. In this paper, based on the displacement measurements of an aluminum plate subjected to soft body impact, an inversion of the bird constitutive model is conducted by using backpropagation (BP) neural network. A comparative evaluation of this inversion model and other constitutive models is carried out, indicating that the proposed inversion model is more reasonable.

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Analysis of the Anti-Bird Impact Performance of Typical Beam-Edge Structure Based on ANSYS/LS-DYNA

Cited by 6 publications

References 3 publications

FE Analysis of Dynamic Response of Aircraft Windshield against Bird Impact

FE Analysis of Dynamic Response of Aircraft Windshield against Bird Impact

A Method to Identify Bird Constitutive Model and its Parameters

Inversion for Constitutive Model Parameters of Bird in Case of Bird Striking

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