Material Distribution Optimization for the Shell Aircraft Composite Structure

S. Shevtsov 1 , I. Zhilyaev 1 , P. Oganesyan 2 , and V. Axenov 3
  • 1 South Center of Russian Academy, 344006, Tchekhov str., 41, Rostov on Don, Russia; Southern Federal University, 344090, Milchakov str., 8A, Rostov on Don, Russia
  • 2 Southern Federal University, 344090, Milchakov str., 8A, Rostov on Don, Russia
  • 3 Mil Moscow Helicopter Plant, Rostov Branch, 344038, Novatorov str., 5, Rostov on Don, Russia; Don State Technical University, 344000, Gagarin sq., 1, Rostov on Don, Russia

Abstract

One of the main goal in aircraft structures designing isweight decreasing and stiffness increasing. Composite structures recently became popular in aircraft because of their mechanical properties and wide range of optimization possibilities.Weight distribution and lay-up are keys to creating lightweight stiff strictures. In this paperwe discuss optimization of specific structure that undergoes the non-uniform air pressure at the different flight conditions and reduce a level of noise caused by the airflowinduced vibrations at the constrained weight of the part. Initial model was created with CAD tool Siemens NX, finite element analysis and post processing were performed with COMSOL Multiphysicsr and MATLABr. Numerical solutions of the Reynolds averaged Navier-Stokes (RANS) equations supplemented by k-w turbulence model provide the spatial distributions of air pressure applied to the shell surface. At the formulation of optimization problem the global strain energy calculated within the optimized shell was assumed as the objective. Wall thickness has been changed using parametric approach by an initiation of auxiliary sphere with varied radius and coordinates of the center, which were the design variables. To avoid a local stress concentration, wall thickness increment was defined as smooth function on the shell surface dependent of auxiliary sphere position and size. Our study consists of multiple steps: CAD/CAE transformation of the model, determining wind pressure for different flow angles, optimizing wall thickness distribution for specific flow angles, designing a lay-up for optimal material distribution. The studied structure was improved in terms of maximum and average strain energy at the constrained expense ofweight growth. Developed methods and tools can be applied to wide range of shell-like structures made of multilayered quasi-isotropic laminates.

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  • [1] Ostergaard M. G., Ibbotson A. R., Le Roux O. and Prior A. M., Virtual Testing of Aircraft Structures, CEAS Aeronaut. J., 2011, 1, 83–103

  • [2] Zhou M., Fleury R. and Kemp M., Optimization of Composite: Recent Advances and Application, 2011, www.altairproductdes ign.com

  • [3] Rao J. S., Advances in Aero Structures, In Proceedings of ICOVP- 2015 Conference (Guwahati, India, 2015), 20

  • [4] Haug E. J. and Arora J. S., Applied Optimal Design: Mechanical and Structural Systems, John Wiley &Sons, N.-Y., 1979

  • [5] Jones R. M., Mechanics of Composite Materials, Taylor & Francis, Inc., Philadelphia, 1998

  • [6] Staab G. H., Laminar Composites, Butterworth-Heinemann, Wobum, MA, 1999

  • [7] Baker A., Dutton S. and Kelly D., CompositeMaterials for Aircraft Structures, AIAA Eds., Virginia, 2004

  • [8] Yancey R. N. and Stefanovic M., A Practical Method to Meet the Composite Optimization Challenge, 2013, www.altairproductde sign.com

  • [9] Kress G., Design Criteria, In: Composites. ASM Handbook, Vol. 21, ASM International, Materials Park, OH, 2001

  • [10] Meske R., Sauter J. and Zeynel G., Recent Improvements in Topology and Shape Optimization and the Integration into the Virtual Product Development Process, In: Proceedings of International Workshop on Advances in Shape and Topology Optimization, Graz, Austria, 2008

  • [11] Gillet A., Francescato P. and Saffre P., Single- and Multiobjective Optimization of Composite Structures: The Influence of Design Variables, J. of Compos. Mater., 2010, 44, 457–480

  • [12] Kaynak C. and Akgül T., Open Mould Processes, In: Akovali G. (Ed.) Handbook of Composite Fabrication, RAPRA Technology Ltd., Shawbury, UK, 2002

  • [13] Cumming W. D. et al., Multidirectional Tape Prepregs, In: Composites. ASM Handbook, Vol. 21, ASM International, Materials Park, OH, 2001

  • [14] Thomas H. L., Zhou M., Shy Y. K. and Pagaldipti N., Practical Aspects of Commercial Composite Topology Optimization Software Development, In: Rozvany G. I. N. and Olhoff N. (Eds.), Topology Optimization of Structures and Composite Continua, Kluver Academic Publishers, Dordrecht, Boston, London, 2000

  • [15] Guillermin O., Computer-Aided Design and Manufacturing, In: Composites. ASM Handbook, Vol. 21, ASM International, Materials Park, OH, 2001

  • [16] Vosniakos G.-C., Maroulis T. and Pantelis D., A method for optimizing process parameters in layer-based rapid prototyping, Proc. Inst. of Mech. Eng., Part B: J. Eng. Manufact., 2007, 221, 1329–1340

  • [17] Rastogi N., Finite Element Analysis, In: Composites. ASM Handbook, Vol. 21, ASM International, Materials Park, OH, 2001

  • [18] Querin O. M., Steven G. P. and Xie Y. M., Advances in Evolutionary Structural Optimization: 1992-2000, In: Rozvany G. I. N. and Olhoff N. (Eds.), Topology Optimization of Structures and Composite Continua, Kluver Academic Publishers, Dordrecht, Boston, London, 2000

  • [19] Bendsoe M. P. and Sigmund O., Topology Optimization. Theory, Methods and Applications, 2nd ed. Springer, Berlin, 2004

  • [20] Huang X. and Xie Y. M., Evolutionary Topology Optimization of Continuum Structures: Methods and Applications, John Wiley &Sons, Chichester, UK, 2010

  • [21] Gyan S.,Ganguli R. and Naik G. N.,Damage-tolerant design optimization of laminated composite structures using dispersion of ply angles by genetic algorithm, J. of Reinf. Plast. and Compos., 2012, 31, 799–814

  • [22] Shevtsov S. et al., Dynamics of Power High-Stroke Flextensional PZT Actuator with Optimized Shell. Numerical and Experimental Study, In Proceedings of the European Conference on Structural Dynamics – EURODYN-2014 (Porto, Portugal), 1631–1638

  • [23] Taylor J. E., A Formulation for Optimal Structural Design with Optimal Materials, In: Rozvany G. I. N. and Olhoff N. (Eds.), Topology Optimization of Structures and Composite Continua, Kluver Academic Publishers, Dordrecht, Boston, London, 2000

  • [24] Oganesyan P., Zhilyaev I., Shevtsov S. and Wu J.-K., Optimized Design of the Wind Turbine’s Composite Blade to Flatten the Stress Distribution in the Mounting Areas, In: Dynybyl V. et al. (Eds.), The Latest Methods of Construction Design, Springer Verlag, 2015

  • [25] Wilkes J. O., Fluid Mechanics for Chemical Engineers with Microfluidics and CFD, 2nd ed. Prentice Hall International Series in the Physical and Chemical Engineering Sciences, Westford, MA, 2012

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