Numerical investigation of impact-induced damage of auxiliary composite fuel tanks on Korean Utility Helicopter

Kim, Dong-Hyeop; Kim, Sang-Woo

doi:10.1016/j.compositesb.2018.11.117

Cited by 16 publications

(3 citation statements)

References 16 publications

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“…In equation (19), σ Y is the yield stress of the shaped tube; _ ε is the strain rate of the shaped tube; C ′ and P ′ are the strain rate parameters; σ 0 is the initial yield stress of the shaped tube; β is the hardening parameter; E P is plastic hardening modulus, E P � (E tan E/E − E tan ); and finally, ε eff P is the effective plastic strain.…”

Section: Materials Model Of Rockmentioning

confidence: 99%

“…Although there are many ways to ensure the uniformity of particle distribution in large or simple geometric domains, for example [17,18], the particles tend to distribute uniformly during the SPH simulation process if appropriate kernel function and smoothing length are adopted, but the traditional SPH method, typically, faces some difficulty in ensuring a uniform distribution of particles for models with complex geometries or those with a very small geometric domain. e existing repulsive force method [19] and the virtual particle method [20] primarily solve the problem of the boundary particles missing which happens due to these particles being "truncated" by the boundary in the support domain.…”

Section: Introductionmentioning

confidence: 99%

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Research on the Effect of Particle Distribution on the Crack Propagation in Shaped Energy Blasting Based on the Smoothed Particle Hydrodynamics

Guo

Zhang

et al. 2020

Shock and Vibration

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Conventional smoothed particle hydrodynamics (SPH) methods suffer from disadvantages, such as difficult initial particle configuration, uneven distribution of generated particles, and low computational efficiency when applied to numerical simulation of shaped charge blasting. In this research, to overcome these problems, a modified SPH method that generates the particle configuration through self-adaptive optimization is developed by the combined application of MATLAB and LS-DYNA. The results presented in this paper demonstrate that the modified configuration method solves the problem of uneven distribution of particles in complex geometry domains by providing a more uniform smoothed particle distribution than the conventional SPH method. Furthermore, the results from the application of these two methods to the bidirectional-shaped charge blasting problem reveal that the defects in the particle configuration in the conventional SPH method lead to the development of main cracks in both the shaped and the unshaped directions. However, with the self-adaptive optimization method, the main cracks develop only in the shaped direction. In addition, the equivalent stress difference between the shaped and unshaped directions, 0.7 ms after detonation, is 120 MPa with the modified method. This is 85 MPa more than that with the conventional method.

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Section: Materials Model Of Rockmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on the Effect of Particle Distribution on the Crack Propagation in Shaped Energy Blasting Based on the Smoothed Particle Hydrodynamics

Guo

Zhang

et al. 2020

Shock and Vibration

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“…Their results revealed the feasibility of estimating the capacities of steel conical tanks. Kim et al 23 investigated damage due to a bird strike in a composite fuel tank based on fluid-structure interaction analysis and evaluated the effects of the amount of fuel and impact location on structural behavior. Hashminejad et al 24 used the semi-analytical method to study the lateral sway of a half-filled elliptical tank, and explored the effect of the ovality of the elliptical tank on the natural frequency.…”

Section: Introductionmentioning

confidence: 99%

An improved composite impact damage model and bird-striking damage analysis with smoothed particle hydrodynamics-finite element method

Shao,

Xie,

Liu

et al. 2023

Journal of Reinforced Plastics and Composites

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An improved impact damage model is proposed, which can be used to analyze the progressive failure behavior of fiber-reinforced composites. The model is constructed based on the 3D Hashin failure criterion. However, the difference is that the strain component along the thickness direction in the matrix energy evolution model is introduced, and the effects of and on impact damage are added. Rigid-body and bird-body impact problems are studied, which validates the accuracy of the numerical model by comparison with experiments. A 3D numerical model of light aircraft fuel tank impact is constructed, and the SPH-FEM coupling method is used to predict the bird strike failure problem. The structural damage and impact behavior of a light aircraft fuel tank under impact loading are analyzed. The results show that, under different impact energies, the damage to the matrix is more serious and expands along the fiber direction, and the structure presents different damage forms. This paper provides an effective research model for the study of drop shock and the airworthiness of composite fuel tanks.

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Structural Safety Evaluation of Test Fixture for Static Load Test of External Fuel Tank for Fixed-Wing Aircraft

Kim

et al. 2021

Int. J. Aeronaut. Space Sci.

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Numerical investigation of impact-induced damage of auxiliary composite fuel tanks on Korean Utility Helicopter

Cited by 16 publications

References 16 publications

Research on the Effect of Particle Distribution on the Crack Propagation in Shaped Energy Blasting Based on the Smoothed Particle Hydrodynamics

Research on the Effect of Particle Distribution on the Crack Propagation in Shaped Energy Blasting Based on the Smoothed Particle Hydrodynamics

An improved composite impact damage model and bird-striking damage analysis with smoothed particle hydrodynamics-finite element method

Structural Safety Evaluation of Test Fixture for Static Load Test of External Fuel Tank for Fixed-Wing Aircraft

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