Rear Fuselage Structural Optimization Using Genetic Algorithm


  • Mutwakil Elmshaikhi Karary University
  • ABDALMAGED Aeronautical research and development center-Khartoum



Optimization, Genetic algorithm, Multi Disciplinary Optimization (MDO), buckling, Finite elements, MSC PATRAN


Structural optimization is one of the most important tasks during the airplane structural design and yet there is a lack of well established procedures to determine the optimum design of aerospace structures. This paper represents development of structural optimization code based on genetic algorithm, and results for light aircraft aft fuselage optimal design using the optimization code. We have developed a MATLAB code according to the genetic algorithm and FE model for the composite light aircraft aft fuselage using MSC PATRAN to generate NASTRAN input file; the MATLAB code was coupled with MSC NASTRAN which used to perform linear static and buckling analysis. we obtained the minimum weight of the aft fuselage with a linear static and buckling constraints; the minimum weight is 21.6 kg; it has been obtained after 43 iterations; the margin of safety is of the optimum design is 1.22 and the buckling factor is 1.24 and hence the structure is free of static failure and buckling. The code is efficient in the conceptual and preliminary structural design phases to obtain the optimal aft fuselage weight.


Odeh Dababneh, Timoleon Kipouros, James F. Whidborne, “Application of an Efficient Gradient-Based Optimization Strategy for Aircraft Wing Structures” journal of aerospace, MDPI January 2018.

Denis Howe, “Aircraft loading and structural layout,” professional, Engineering Publishing Limited, London and Bury St Edmunds, UK; 2004.

T.H.G. Megson, “Aircraft structure for engineering students,” 4th edition, Elsevier aerospace series, 2007

Marwan Maurizio Chedid, “Optimization of Composite Materials using a Multilevel Decomposition Approach,” MSc Research, Cranfield University, 2009.

Singiresu S Rao, “Engineering optimization theory and practice,” 4th edition, Wiley, New York, 2009.

Christos Kassapoglouc, “Design and analysis of composite structures with applications to aerospace structure,” 2nd edition, Wiley, New York, 2013.

Rongxin Xu, “Optimal Design of a Composite Wing Structure for a Flying-Wing Aircraft Subject to Multi-constraint,” MSc Research, Cranfield University 2012.

Michel van Tooren and Lars Krakers, Multi-disciplinary Design of Aircraft Fuselage Structures International Journal of Mechanical, aerospace, Industrial, Mechatronic and Manufacturing Engineering Vol:7, No:5, 2013

MSC Patran Laminate Modeler User’s Guide; MSC Software Corporation: Santa Ana, CA, USA, 2008.

NASTRAN 2012 user guide




How to Cite

Elmshaikhi, M., & ABDALMAGED. (2021). Rear Fuselage Structural Optimization Using Genetic Algorithm. Journal of Karary University for Engineering and Science, 1(2).