All Outputs (9)

Tailored twist morphing achieved using graded bend–twist metamaterials (2022)
Journal Article
Gu, H., Taghipour, J., Shaw, A. D., Amoozgar, M., Zhang, J., Wang, C., & Friswell, M. I. (2022). Tailored twist morphing achieved using graded bend–twist metamaterials. Composite Structures, 300, Article 116151. https://doi.org/10.1016/j.compstruct.2022.116151

This work develops a morphing concept that utilises a metamaterial as the passive morphing device for helicopter blades. The metamaterials are created with bend–twist coupling, which enable the blade twist under prescribed bending loads. Finite eleme... Read More about Tailored twist morphing achieved using graded bend–twist metamaterials.

Free vibration analysis of curved lattice sandwich beams (2022)
Journal Article
Amoozgar, M., Fazelzadeh, S. A., Ghavanloo, E., & Ajaj, R. M. (2022). Free vibration analysis of curved lattice sandwich beams. Mechanics of Advanced Materials and Structures, 1-13. https://doi.org/10.1080/15376494.2022.2114043

In this paper, the effects of initial curvature and lattice core shape on the bending vibration of sandwich beams are investigated. The three-dimensional (3D) sandwich beam is simulated by combining a two-dimensional (2D) cross-sectional analysis wit... Read More about Free vibration analysis of curved lattice sandwich beams.

Resonant passive energy balancing for a morphing helicopter blade (2022)
Journal Article
Zhang, J., Shaw, A. D., Wang, C., Gu, H., Amoozgar, M., & Friswell, M. I. (2022). Resonant passive energy balancing for a morphing helicopter blade. Aerospace Science and Technology, 128, Article 107786. https://doi.org/10.1016/j.ast.2022.107786

The idea of morphing a helicopter blade by using compliant structures promises augmented capabilities in terms of manoeuvrability and fuel efficiency. To achieve morphing, compliant structures work by elastically deforming to achieve the desired resp... Read More about Resonant passive energy balancing for a morphing helicopter blade.

Elastomer-based skins for morphing aircraft applications: Effect of biaxial strain rates and prestretch (2022)
Journal Article
Ahmad, D., Ajaj, R. M., & Amoozgar, M. (2022). Elastomer-based skins for morphing aircraft applications: Effect of biaxial strain rates and prestretch. Polymer Testing, 113, Article 107655. https://doi.org/10.1016/j.polymertesting.2022.107655

There is an emerging trend in the morphing aircraft research where two or more morphing degrees of freedom are used on a wing which leads to the concept of polymorphing. The skin of the morphing wing must be flexible in the morphing direction but sti... Read More about Elastomer-based skins for morphing aircraft applications: Effect of biaxial strain rates and prestretch.

A Polymorphing Wing Capable of Span Extension and Variable Pitch (2022)
Journal Article
Parancheerivilakkathil, M. S., Haider, Z., Ajaj, R. M., & Amoozgar, M. (2022). A Polymorphing Wing Capable of Span Extension and Variable Pitch. Aerospace, 9(4), Article 205. https://doi.org/10.3390/aerospace9040205

This paper presents the development of a novel polymorphing wing capable of Active Span morphing And Passive Pitching (ASAPP) for small UAVs. The span of an ASAPP wing can be actively extended by up to 25% to enhance aerodynamic efficiency, whilst it... Read More about A Polymorphing Wing Capable of Span Extension and Variable Pitch.

Nonlinear aeroelastic stability analysis of a two-stage axially moving telescopic wing by using fully intrinsic equations (2022)
Journal Article
Moravej Barzani, S. H., Shahverdi, H., & Amoozgar, M. (2022). Nonlinear aeroelastic stability analysis of a two-stage axially moving telescopic wing by using fully intrinsic equations. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 236(15), 3102–3110. https://doi.org/10.1177/09544100221080117

During the process of span extension for an aircraft wing equipped with a telescopic morphing mechanism, the wing aspect ratio increases, and hence, the geometrical nonlinearities might become more significant. In this regard, this paper aims to inve... Read More about Nonlinear aeroelastic stability analysis of a two-stage axially moving telescopic wing by using fully intrinsic equations.

Parametric study on the dynamic aeroelastic analysis of a two-stage axially deploying telescopic wing (2022)
Journal Article
Moravej Barzani, S. H., Shahverdi, H., & Amoozgar, M. (2023). Parametric study on the dynamic aeroelastic analysis of a two-stage axially deploying telescopic wing. Journal of Vibration and Control, 29(9-10), 2021-2034. https://doi.org/10.1177/10775463221074145

In this paper, the flutter instability of a conventional two-stage axially moving telescopic UAV wing is investigated. To this aim, and to be as close as possible to the reality, the effects of temporal variation of mass and length, due to the moveme... Read More about Parametric study on the dynamic aeroelastic analysis of a two-stage axially deploying telescopic wing.

Experimental validation of inertial twist concept for rotor blade application (2022)
Journal Article
Gu, H., Taghipour, J., Rivero, A., Amoozgar, M., Shaw, A. D., Zhang, J., …Friswell, M. I. (2022). Experimental validation of inertial twist concept for rotor blade application. Composite Structures, 288, Article 115414. https://doi.org/10.1016/j.compstruct.2022.115414

The present study performs a set of static tests to demonstrate a novel passive morphing concept. The concept introduces a bend–twist coupled composite spar to rotor blades, allowing for twist morphing to be achieved by imposing a lagwise bending mom... Read More about Experimental validation of inertial twist concept for rotor blade application.

Blade thickness effects on viscous flutter in a radial turbocharger turbine (2022)
Journal Article
Sajedin, A., Allport, J., Amoozgar, M., & Farhangiyan Marandi, O. (2022). Blade thickness effects on viscous flutter in a radial turbocharger turbine. Engineering Failure Analysis, 136, Article 106139. https://doi.org/10.1016/j.engfailanal.2022.106139

Transient blade loading limits the lifetime of turbocharger turbine blades. This study investigates the flutter instability of a radial turbocharger turbine blade under pulsating inlet conditions. The viscous Navier-Stokes equations with the SST-kω t... Read More about Blade thickness effects on viscous flutter in a radial turbocharger turbine.