Low-Velocity Impact on Composite Stiffened Panels Using a Component-Wise Approach
Marco PETROLO, Chiara FRANCESCHINI, Matteo FILIPPI, Erasmo CARRERA
Abstract. Composite stiffened panels, widely used in the aerospace sector, are exposed to low-velocity impacts (LVI) during operation, maintenance, and transport. Computational methods help predict deformation and the extent of damage under dynamic loading, reducing the need for an extensive testing campaign. In this work, structural theories based on the Carrera Unified Formulation (CUF) are proposed for the analysis of low-velocity impacts on stiffened composite panels. The dynamic response of both the skin and the stiffeners is described through refined 1D elements with higher-order kinematic expansions, enabling an accurate evaluation of local deformation effects and stress concentrations, especially at the skin-stiffener interface. A progressive intralaminar damage model is adopted to account for material nonlinearities. The proposed approach is assessed on representative composite stiffened panels subjected to LVI. The results are compared with those obtained from commercial finite element models based on full 3D discretization. The comparison shows that the CUF-based models provide accurate predictions of the structural response while reducing the computational cost in terms of Degrees of Freedom (DOFs). These features make the proposed methodology an efficient alternative to conventional 3D modelling strategies for the design and analysis of lightweight composite stiffened structures.
Keywords
Low-Velocity Impact, Stiffened Panels, CUF
Published online 11/8/2026, 5 pages
Copyright © 2026 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Marco PETROLO, Chiara FRANCESCHINI, Matteo FILIPPI, Erasmo CARRERA, Low-Velocity Impact on Composite Stiffened Panels Using a Component-Wise Approach, Materials Research Proceedings, Vol. 73, pp 109-113, 2026
DOI: https://doi.org/10.21741/9781644904459-22
The article was published as article 22 of the book Mechanics of Advanced Materials and Structures
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
References
[1] E. Greenhalgh, M. Hiley. “The assessment of novel materials and processes for the impact tolerant design of stiffened composite aerospace structures”. Composites Part A: Applied Science and Manufacturing, vol. 34, no. 2, pp. 151–161, 2003.
[2] Y. Gao, Y. Gong, X. Li, Z. Li, M. Shan, J. Zhang, L. Zhao, N. Hu, “Multiple low-velocity impact induced damage evolution and compressive performance of thin cross-ply CFRP laminates”. Construction and Building Materials, vol. 517, 2026, https://doi.org/10.1016/j.conbuildmat.2026.145738
[3] S. Adhityan, B. Razim Ahamed, D. M. Reddy, R. R. Mutra, J. Naveen, and R. Rzadkowski, “Modeling and Analysis of Low Velocity Impact Damage in Carbon Fiber Laminates”. Polymer Composites 47, no. S2 (2026): S275–S287, https://doi.org/10.1002/pc.70932.
[4] M. İ. Özsoy, E. C. Yakar, S. Fidan, S. Ürgün, and M. Ö. Bora, “ Progressive Damage and Impact Behavior of Carbon Fiber/Epoxy-Aluminum 2024-T3 CARALL Composites: Experimental Investigation and Hybrid Finite Element Modeling Approach,” Polymer Composites (2026): 1–15, https://doi.org/10.1002/pc.71474.
[5] D.H. Li, Y. Liu, X. Zhang. “Low-velocity impact responses of the stiffened composite laminated plates based on the progressive failure model and the layerwise/solid-elements method”. Composite Structures 110 (2014) 249–275.
[6] M. Rahman, E. Maravilla, S. Devaru, S. Lin, A. Waas, V. Ranatunga. “A Computational Method for Predicting the Damage and Failure Due to Impact of Double Hat Stiffened Aircraft Skin Panels”. Aerotecnica Missili & Spazio, 2026. https://doi.org/10.1007/s42496-025-00301-4
[7] E. Carrera, M. Cinefra, E. Zappino and M. Petrolo, “Finite Element Analysis of Structures through Unified Formulation”. Hoboken, NJ, USA: Wiley, 2014. https://doi.org/10.1002/9781118536643
[8] M.H. Nagaraj, E. Carrera and M. Petrolo, “Progressive damage analysis of composite laminates subjected to low-velocity impact using 2D layer-wise structural models”. Int. J. Non-Linear Mech. 127, 2020. https://doi.org/10.1016/j.ijnonlinmec.2020.103591
[9] M.H. Nagaraj, “Higher-order layer-wise models for the progressive damage and impact analysis of composite structures”. PhD thesis, Politecnico di Torino, 2021. Doctoral Dissertation, Doctoral Program in Mechanical Engineering (33rd Cycle), January 2021
[10] M. Petrolo, E. Tortorelli and S. Saputo, “Compressive damage of composite structures using 3D Failure criteria and 2D higher order structural theories”. Mechanics of Advanced Materials and Structures, pages 1–11, 2025. https://doi.org/10.1080/15376494.2025.2489138
[11] M. Petrolo, E. Tortorelli, S. Saputo and E. Carrera, “Tensile damage analysis of composite structures based on 3D Hashin failure criteria and 2D higher-order structural theories”. Comp. Commun. 56, 102395, 2025. https://doi.org/10.1016/j.coco.2025.102395
[12] M. Petrolo, M. Filippi, E. Carrera, C. Franceschini and E. Tortorelli, “Low-velocity Impact in Composite Plates Using the Hashin 3D Criterion and 2D Layer-Wise Theories”. Aerotecnica Missili & Spazio, 2026, https://doi.org/10.1007/s42496-026-00320-9.
