Metallic sandwich panels are lightweight structures that offer improved mechanical properties (impact strength, noise suppression, etc.). As such, they are attractive for use in ships, buildings, bridges and similar, when these structures are also made of metals, removing the issue of joining dissimilar materials.
See:
Yan, S., Jelovica, J. “Buckling and free vibration of laser-welded web-core sandwich panels: Extreme sensitivity to weld geometry variation”. Engineering Structures, 244, 2021, 112737, https://doi.org/10.1016/j.engstruct.2021.112737
Jelovica, J., Romanoff, J., Klein, R. “Eigenfrequency analyses of laser-welded web-core sandwich panels”, Thin-Walled Structures, vol. 101, pp.120-126, 2016, https://doi.org/10.1016/j.tws.2016.01.002
Goncalves, B.R., Jelovica, J., Romanoff, J. “A homogenization method for geometric nonlinear analysis of sandwich structures with initial imperfections”, International Journal of Solids and Structures, vol. 87, no. 1, pp. 194–205, 2016., https://doi.org/10.1016/j.ijsolstr.2016.02.009
Functionally graded porous materials allow us to combine desirable features of different materials and position the material in more efficient way through the thickness and span of the structure.
See:
Keleshteri, M.M., Jelovica, J. “Nonlinear Vibration Analysis of Bidirectional Porous Beams”. Engineering with Computers, 2021. https://doi.org/10.1007/s00366-021-01553-x
Keleshteri, M.M., Jelovica, J. “Nonlinear vibration behavior of functionally graded porous cylindrical panels”. Composite Structures, Vol. 239, 2020, https://doi.org/10.1016/j.compstruct.2020.112028
Sudden thermal loads can induce high stresses on a structure which could lead to failures. We are investigating consequences of liquid nitrogen gas (LNG) spills on steel structures at ambient temperatures. LNG is cryogenic liquid stored at -163 C at 1 bar.
See:
Babaee, A., Jelovica, J. “Nonlinear Transient Thermoelastic Response of FGM Plate Under Sudden Cryogenic Cooling”. Ocean Engineering, Vol. 226, 2021, https://doi.org/10.1016/j.oceaneng.2021.108875
