A Sensitivity Analysis of the Damage Behavior of a Leading-Edge Subject to Bird Strike

Caprio, Francesco Di; Sellitto, Andrea; Saputo, Salvatore; Guida, Michele; Riccio, Aniello

doi:10.3390/app10228187

Cited by 11 publications

(20 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The code is widely used in engineering applications and is demonstrated to be suitable for several technical problems [17][18][19][20]. The applied loading conditions are different between unfolded and folded configuration.…”

Section: Optimization Analysismentioning

confidence: 99%

Design Optimization of Interfacing Attachments for the Deployable Wing of an Unmanned Re-Entry Vehicle

et al. 2021

Self Cite

View full text Add to dashboard Cite

Re-entry winged body vehicles have several advantages w.r.t capsules, such as maneuverability and controlled landing opportunity. On the other hand, they show an increment in design level complexity, especially from an aerodynamic, aero-thermodynamic, and structural point of view, and in the difficulties of housing in operative existing launchers. In this framework, the idea of designing unmanned vehicles equipped with deployable wings for suborbital flight was born. This work details a preliminary study for identifying the best configuration for the hinge system aimed at the in-orbit deployment of an unmanned re-entry vehicle’s wings. In particular, the adopted optimization methodology is described. The adopted approach uses a genetic algorithm available in commercial software in conjunction with fully parametric models created in FEM environments and, in particular, it can optimize the hinge position considering both the deployed and folded configuration. The results identify the best hinge configuration that minimizes interface loads, thus, realizing a lighter and more efficient deployment system. Indeed, for such a category of vehicle, it is mandatory to reduce the structural mass, as much as possible in order to increase the payload and reduce service costs.

show abstract

Section: Optimization Analysismentioning

confidence: 99%

Design Optimization of Interfacing Attachments for the Deployable Wing of an Unmanned Re-Entry Vehicle

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Aluminium and its alloys are very interesting in this regard because of their low density, high specific strength to weight ratio and better mechanical properties. 10–14 , 16–21 The AA7075 grades, in particular, are widely preferred among all grades.AA7075 grades are majorly alloyed with Al-Zn-Mg-Cu elements which possess higher tensile properties, better specific strength, good corrosion resistance, good thermal conductivity, higher fracture toughness and superior energy absorbing capability. 10–16 The main problems arising in AA7075 grades during fusion welding processes are (i) solidification hot cracking and (ii) micro segregation of alloying elements in the heat affected zone (HAZ).…”

Section: Introductionmentioning

confidence: 99%

“…Several researchers have conducted experimental, theoretical, and numerical studies on the ballistic response of aluminium 7xxx grades to high impact velocity projectiles. 7–14 , 18–23 Mishra et al. 7 studied the ballistic performance of various heat treated AA7055 plates against high velocity projectile impact.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical and experimental investigations on the effect of target thickness and solution treatment on the ballistic behaviour of AA7075 thick plates

Praveen

Rao

Damodaram

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

The influence of target thickness and solution treatment on the ballistic behaviour of AA7075 targets has been investigated by both numerical and experimental methods. In numerical simulation, the target thickness was varied from 19 to 26 mm and an Ogive nose shaped projectile of 7.62 mm diameter with inlet velocities ranging between 800–875 m/s was considered. In order to justify the numerical observations, high velocity ballistic experiments were conducted on AA7075-T651 and the solution treated plates of various thicknesses (12, 16, 18, 20, 22 and 25 mm). For this experimental study, a deformable form projectile with dimensions of 7.62 × 51 mm and an inlet velocity of 850 ± 20 m/s was used. Microstructures of ballistic test samples were analysed using an optical microscope. Numerical analysis using ABAQUS predicted the minimum thickness required to resist complete penetration to be 20 mm in the case of AA7075 plates in the T651 condition, while experimental results showed it to be 21 mm. In the case of AA7075 solution treated plates, numerical simulation analysis predicted the minimum required plate thickness to resist complete penetration to be 24 mm, while the experimental results showed it to be 23 mm. Post ballistic microstructure analysis revealed that there was no change in the microstructure in the AA7075-T651 condition plates. Solution treated plates showed deformation of grains nearer to the impact region with the formation of adiabatic shear bands. In the case of the T651 plate, the mode of fracture was brittle, resulting in splinters, whereas it was petalling in the case of the solution-treated plates. The numerically predicted depth of penetration on both targets was reasonably close to experimental results with an average of 4% error.

show abstract

“…V acanfora et al investigated the feasibility and effectiveness of novel thin additive manufactured hybrid metal/ composite lattice structures by the new thin additive are studied, and the results showed that the structure maximizes the energy absorbed through plastic deformation and coating [30]. Francesco Di Caprio et al reported the impact aircraft metallic sandwich leading-edge subjected to a bird strike, and use the model to analyze its energy consumption characteristics [31]. D H Laananen et al established a performance analysis of the energy-absorbing seat configurations for aircraft [32].…”

Section: Introductionmentioning

confidence: 99%

Compressive mechanical behavior and model of composite elastic-porous metal materials

Yang¹,

Zhou²,

Di³

et al. 2021

Mater. Res. Express

View full text Add to dashboard Cite

This work presents the experimental characterization and theoretical modeling of composite elastic-porous metal materials (C-EPMM). C-EPMM is a novel porous metallic damping material made of wire mesh and wire helix. A series of quasi-static compressive experiments were carried out to investigate the stiffness and energy absorption ability of the C-EPMM with different mass ratios. The experimental results show that the mass ratios can significantly affect the stiffness and loss factor of C-EPMM. To efficiently predict the nonlinear mechanical properties of the C-EPMM a theoretical model of C-EPMM was proposed for the first time, the model was based on the manufacturing process. A comparison between the predicted data and the experimental data was conducted. The results show that the theoretical model can accurately predict the mechanical performance of C-EPMM. The conclusions derived from this work can provide a new method for adjusting the mechanical performance of EPMM in applications.

show abstract

A Sensitivity Analysis of the Damage Behavior of a Leading-Edge Subject to Bird Strike

Cited by 11 publications

References 22 publications

Design Optimization of Interfacing Attachments for the Deployable Wing of an Unmanned Re-Entry Vehicle

Design Optimization of Interfacing Attachments for the Deployable Wing of an Unmanned Re-Entry Vehicle

Numerical and experimental investigations on the effect of target thickness and solution treatment on the ballistic behaviour of AA7075 thick plates

Compressive mechanical behavior and model of composite elastic-porous metal materials

Contact Info

Product

Resources

About