PSI - Issue 60

Prince Jeya Lal Lazar et al. / Procedia Structural Integrity 60 (2024) 185–194 Author name / StructuralIntegrity Procedia 00 (2019) 000–000

194 10

4. Conclusion This work analyzed the effects of blast and honeycomb core parameters on the structural integrity of square honeycomb cored sandwich panels made of super-austenitic stainless steels using CONWEP and UNDEX algorithms. The effects of blast parameters like charge mass and standoff distance on the front face midpoint deflection were analyzed. Likewise, the effects of various core thicknesses were also investigated under surface and underwater explosions. The J-C constitutive material model incorporating high strain rate and temperature effects was considered in the numerical model. Typically, all the panels failed by front-face plastic deformation followed by core crushing and back-face deformation. With the increase in charge mass, the front face midpoint deflections and the degree of core crushing elevated proportionally whereas, with the increase in standoff distance the structural integrity of the panel was retained with minimized core crushing and deformations. An increase in core thickness proved to be less economical in blast mitigation. Hence from a designer standpoint, a tradeoff is essential between core parameters and materials to design protective structures for blast mitigation. References [1] Lv, W., Li, D., & Dong, L. (2021). Study on blast resistance of a composite sandwich panel with isotropic foam core with negative Poisson’s ratio. International Journal of Mechanical Sciences, 191, 106105. https://doi.org/10.1016/j.ijmecsci.2020.106105 [2] Patel S, Patel M. (2022). The efficient design of hybrid and metallic sandwich structures under air blast loading. Journal of Sandwich Structures & Materials, 24(3):1706-1725. https://doi.org/10.1177/10996362211065748 [3] Li, Y., Ren, X., Zhang, X., Chen, Y., Zhao, T., & Fang, D. (2021). Deformation and failure modes of aluminum foam-cored sandwich plates under air-blast loading. Composite Structures, 258, 113317. https://doi.org/10.1016/j.compstruct.2020.113317 [4] Sun, G., Zhang, J., Li, S., Fang, J., Wang, E., & Li, Q. (2019). Dynamic response of sandwich panel with hierarchical honeycomb cores subject to blast loading. Thin-Walled Structures, 142, 499–515. https://doi.org/10.1016/j.tws.2019.04.029 [5] Rolfe, E., Quinn, R., Irven, G., Brick, D., Dear, J. P., & Arora, H. (2020). Underwater blast loading of partially submerged sandwich composite materials in relation to air blast loading response. International Journal of Lightweight Materials and Manufacture. https://doi.org/10.1016/j.ijlmm.2020.06.003 [6] Ahmed, S., & Galal, K. (2019). Response of Metallic Sandwich Panels to Blast Loads. Journal of Structural Engineering, 145(12), 04019145. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002397 [7] Tran, P., Ngo, T. D., & Mendis, P. (2014). Bio-inspired composite structures subjected to underwater impulsive loading. Computational Materials Science, 82, 134–139. https://doi.org/10.1016/j.commatsci.2013.09.033 [8] Kumar, Y. P., Gupta, N. K., Rao, Y. S., & Kant, B. (2017). On Shock Response of Marine Sandwich Structures Subjected to UNDEX Loading. Procedia Engineering, 173, 1932–1942. https://doi.org/10.1016/j.proeng.2016.12.255 [9] Xue, Z., & Hutchinson, J. W. (2006). Crush dynamics of square honeycomb sandwich cores. International Journal for Numerical Methods in Engineering, 65(13), 2221–2245. https://doi.org/10.1002/nme.1535 [10] Wadley, H. (2003). Fabrication and structural performance of periodic cellular metal sandwich structures. Composites Science and Technology, 63(16), 2331–2343. https://doi.org/10.1016/S0266-3538(03)00266-5 [11] KOOISTRA, G. (2004). Compressive behavior of age hardenable tetrahedral lattice truss structures made from aluminium. Acta Materialia, 52(14), 4229–4237. https://doi.org/10.1016/j.actamat.2004.05.039 [12] Yang, L., Sui, L., Li, X., Dong, Y., Zi, F., & Wu, L. (2019). Sandwich plates with gradient lattice cores subjected to air blast loadings. Mechanics of Advanced Materials and Structures, 1–12. https://doi.org/10.1080/15376494.2019.1669092. [13] Cong, P. H., Quyet, P. K., & Duc, N. D. (2021). Effects of lattice stiffeners and blast load on nonlinear dynamic response and vibration of auxetic honeycomb plates. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 095440622199279. https://doi.org/10.1177/0954406221992797 [14] Li, L., Wang, R., Zhao, H., Zhang, H., & Yan, R. (2021). Combined effects of elevated temperatures and high strain rates on compressive performance of S30408 austenitic stainless steel. Structures, 34, 1–9. https://doi.org/10.1016/j.istruc.2021.07.063 [15] Meng, Y., Lin, Y., Zhang, Y., & Li, X. (2020). Study on the dynamic response of combined honeycomb structure under blast loading. Thin Walled Structures, 157, 107082. https://doi.org/10.1016/j.tws.2020.107082 [16] Meng, Y., Lin, Y., Zhang, Y., & Li, X. (2020). Study on the dynamic response of combined honeycomb structure under blast loading. Thin Walled Structures, 157, 107082. https://doi.org/10.1016/j.tws.2020.107082 [17] Chen, G., Cheng, Y., Zhang, P., Cai, S., & Liu, J. (2021). Blast resistance of metallic double arrowhead honeycomb sandwich panels with different core configurations under the paper tube-guided air blast loading. International Journal of Mechanical Sciences, 201, 106457. https://doi.org/10.1016/j.ijmecsci.2021.106457 [18] Abaqus 6.14 user manual, 2014 [19] Dharmasena, K. P., Wadley, H. N. G., Xue, Z., & Hutchinson, J. W. (2008). Mechanical response of metallic honeycomb sandwich panel structures to high-intensity dynamic loading. International Journal of Impact Engineering, 35(9), 1063–1074. https://doi.org/10.1016/j.ijimpeng.2007.06.008