Design and structural analysis of buckling and prestressed modal of an isogrid conical shell under mechanical and thermal loads
محورهای موضوعی : فصلنامه شبیه سازی و تحلیل تکنولوژی های نوین در مهندسی مکانیک
Behrooz Shahriari
1
,
Mahdi Sharifi
2
,
Hassan Izanlo
3
1 - Faculty of Mechanics, Malek Ashtar University of Technology,Isfahan, Iran.
2 - Faculty of Mechanics, Malek Ashtar University of Technology, Isfahan, Iran
3 - Faculty of Mechanics, Malek Ashtar University of Technology, Isfahan, Iran
کلید واژه: Isogrid conical shell, Prestressed modal analysis, Buckling analysis, Design, Finite Element Method (FEM),
چکیده مقاله :
Aerospace structures are very important, so it is necessary to design aerospace structures with low weight and high resistance. In this study, the isogrid conical shell has been studied. At first, an algorithm for the isogrid conical shell is developed in MATLAB software. This algorithm generates the pattern of stiffeners (isogrid) on the conical shell. According to the isogrid conical shell plot in MATLAB software, a shell design has been done in SolidWorks software. Then, the isogrid conical shell has been analyzed under mechanical loads (axial and bending load and internal pressure) and temperature gradient in the ANSYS Workbench software using the finite element method (FEM). Buckling, modal, prestressed–modal, deformation and equivalent stress analyzes have been performed on the isogrid conical shell. The total mass of the system is about 41 kg and it is modeled for an optimal internal pressure (0.6 MPa) with safety factor of about 2. It was concluded that the conical shell with isogrid stiffeners under temperature conditions and mechanical loads can reduce the weight and resist buckling and vibration. At the end, the conditions of fixed support and remote–displacement are compared. This shell can be used in aerospace structures.
Aerospace structures are very important, so it is necessary to design aerospace structures with low weight and high resistance. In this study, the isogrid conical shell has been studied. At first, an algorithm for the isogrid conical shell is developed in MATLAB software. This algorithm generates the pattern of stiffeners (isogrid) on the conical shell. According to the isogrid conical shell plot in MATLAB software, a shell design has been done in SolidWorks software. Then, the isogrid conical shell has been analyzed under mechanical loads (axial and bending load and internal pressure) and temperature gradient in the ANSYS Workbench software using the finite element method (FEM). Buckling, modal, prestressed–modal, deformation and equivalent stress analyzes have been performed on the isogrid conical shell. The total mass of the system is about 41 kg and it is modeled for an optimal internal pressure (0.6 MPa) with safety factor of about 2. It was concluded that the conical shell with isogrid stiffeners under temperature conditions and mechanical loads can reduce the weight and resist buckling and vibration. At the end, the conditions of fixed support and remote–displacement are compared. This shell can be used in aerospace structures.
[1] Morozov, E. V., Lopatin, A. V., & Nesterov, V. A. (2011). Buckling analysis and design of anisogrid composite lattice conical shells. Composite Structures, 93(12), 3150-3162.
[2] Kanou, H., Nabavi, S. M., & Jam, J. E. (2013). Numerical modeling of stresses and buckling loads of isogrid lattice composite structure cylinders. International Journal of Engineering, Science and Technology, 5(1), 42-54.
[3] Reinhold, H., Zarfas, D., Eltzroth, M., McCloud, P., & Greenberg, A. (2024). Analysis, Optimization, and Destructive Testing of Machined Isogrid Cylinders for Small Scale Rocket Airframes. In AIAA SCITECH 2024 Forum (p. 0561).
[4] Johnson, A. J. T., & Paramasivam, S. (2022). Compression behavior of 3D printed isogrid cylindrical shell structures using experimental and finite element modeling. Polymer Composites, 43(10), 7278-7289.
[5] Sorrentino, L., Marchetti, M., Bellini, C., Delfini, A., & Albano, M. (2016). Design and manufacturing of an isogrid structure in composite material: Numerical and experimental results. Composite Structures, 143, 189-201.
[6] Hao, M., Hu, Y., Wang, B., & Liu, S. (2017). Mechanical behavior of natural fiber-based isogrid lattice cylinder. Composite Structures, 176, 117-123.
[7] Sakata, K., & Ben, G. (2012). Fabrication method and compressive properties of CFRP isogrid cylindrical shells. Advanced Composite Materials, 21(5-6), 445-457.
[8] Vasques, C. M., Gonçalves, F. C., & Cavadas, A. M. (2021). Manufacturing and testing of 3D-printed polymer isogrid lattice cylindrical shell structures. Engineering Proceedings, 11(1), 47.
[9] Francisco, M. B., Pereira, J. L. J., Oliver, G. A., da Silva, F. H. S., da Cunha Jr, S. S., & Gomes, G. F. (2021). Multi objective design optimization of CFRP isogrid tubes using sunflower optimization based on metamodel. Computers & Structures, 249, 106508.
[10] Belardi, V. G., Fanelli, P., & Vivio, F. (2018). Design, analysis and optimization of anisogrid composite lattice conical shells. Composites Part B: Engineering, 150, 184-195.
[11] Totaro, G., & Gürdal, Z. (2009). Optimal design of composite lattice shell structures for aerospace applications. Aerospace Science and Technology, 13(4-5), 157-164.
[12] Fadavian, A., Fadavian, H., Davar, A., & Jamal-Omidi, M. (2022). A Comparative Experimental and Numerical Study on Buckling Behavior of Composite Lattice Cylinders. Iranian Journal of Science and Technology, Transactions of Mechanical Engineering, 46(4), 1175-1193.
[13] ALKAN, M., CELIK, E., SUNECLI, A. A., CAN, U., & KOCADAG, S. B. (2021). Isogrid Structure Design and Mass-Strength Optimization in Airplane Lids.
[14] Jam, J. E., Noorabadi, M., Taghavian, H., & Namdaran, N. (2012). Design of Anis Grid Composite Lattice Conical Shell Structures. Researches and Applications in Mechanical Engineering, 1(1), 5-12.
[15] Totaro, G. (2015). Optimal design concepts for flat isogrid and anisogrid lattice panels longitudinally compressed. Composite Structures, 129, 101-110.
[16] Qu, Y., Luo, Y., Huang, Q., & Zhu, Z. (2020). Seismic response evaluation of single-layer latticed shells based on equivalent modal stiffness and linearized iterative approach. Engineering Structures, 204, 110068.
[17] Morozov, E. V., Lopatin, A. V., & Nesterov, V. A. (2011). Finite-element modelling and buckling analysis of anisogrid composite lattice cylindrical shells. Composite Structures, 93(2), 308-323.
[18] Zarei, M., Rahimi, G. H., & Hemmatnezhad, M. (2020). Global buckling analysis of laminated sandwich conical shells with reinforced lattice cores based on the first-order shear deformation theory. International Journal of Mechanical Sciences, 187, 105872.
[19] Kutz, M. (Ed.) (2015). Mechanical engineers' handbook, volume 1: Materials and engineering mechanics. John Wiley & Sons.
