Recent Advances In Optimization Of Aerospace Structures And Engines

  • J. S. Rao*
Part of the Springer Proceedings in Physics book series (SPPHY, volume 126)

Optimization theories have been well advanced during the last few decades; however when it came to handle real life engineering structures it has been always time consuming and approximate when the structure geometry is highly complex. Design of Experiments has helped in understanding the influence of size and shape parameters on achieving a specified objective function with required constraints and a suitable analysis platform, but has its limitations in arriving at the final optimal solution. There are several commercial codes that addressed this need to handle large size structures subjected to dynamic loads. Most advanced tools in this category are Altair OptiStruct and Altair HyperStudy available in Altair HyperWorks suite. Application of these tools in achieving optimum solutions for linear advanced aircraft structures for minimization of weight are first explained. The application of these tools for globally elastic and locally plastic nonlinear structures to reduce local plastic strains and achieve higher life under dynamic loads will then be discussed.


optimization locally plastic structures weight optimization plastic strain minimization topology optimization shape optimization 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    S. S. Rao, 1996. Engineering Optimization Theory and Practice, John Wiley & Sons, Inc.New York.Google Scholar
  2. 2.
    K. Deb, 2006. Genetic Algorithms for Engineering Product Design, Altair CAE Users Conference, Innovation through Simulation, Bangalore, India.Google Scholar
  3. 3.
    Altair OptiStruct, User's Manual v7.0, 2003. Altair Engineering Inc., Troy, MI.Google Scholar
  4. 4.
    G. Schuhmacher, 2006. Optimizing Aircraft Structures, Concept to Reality, Winter Issue, p. 12.Google Scholar
  5. 5.
    R. M. Taylor et al., 2006. Detail Part Optimization on the F–35 Joint Strike Fighter, AIAA 2006–1868, 47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Material Conference, Newport, Rhode Island.Google Scholar
  6. 6.
    Altair HyperMesh, User's Manual v7.0, 2003. Altair Engineering Inc., Troy, MI.Google Scholar
  7. 7.
    Altair HyperStudy, User's Manual v7.0, 2003. Altair Engineering Inc., Troy, MI.Google Scholar
  8. 8.
    J. S. Rao, S. Suresh, 2006. Blade Root Shape Optimization, The Future of Gas Turbine Technology, 3rd International Conference, S2-T2–3, Brussels, Belgium.Google Scholar
  9. 9.
    ANSYS Release 9.0, 2004. Documentation, Ansys Inc.Google Scholar

Copyright information

© Springer Science + Business Media B.V 2008

Authors and Affiliations

  • J. S. Rao*
    • 1
  1. 1.Chief Science Officer, Altair EngineeringBangaloreIndia

Personalised recommendations