Author details

6. Conclusions and extensions

Tradeoff curve of Experiment 3.

competitive and sometimes counterintuitive.

formulation of the structural optimization problems.

problems discussed in the references [20, 24, 25].

7. Remark

64

Table 13.

Figure 19.

Analysis of results of Experiment 3.

Truss and Frames - Recent Advances and New Perspectives

checked by the SAP 2000®.

The study conducted in this chapter focused on the minimization of the weight of 3D steel frames, subjected to constraints concerning horizontal displacements and natural frequencies of vibration. It is interesting to note the importance of a structural optimization study before the design is conceived, which leads to more

Number of groups Maximum displacement (mm) Weight (kg) 2 22.6 8971 4 23 7851 8 26 7421

In the experiments addressed in this chapter, it is easy to conclude that the natural frequency of vibration is an essential characteristic to be considered in the

As future works the approaches will extend to multi-objective optimization problems with more constraints, such as, stress, stability, geometry, and interstorey drifts, introducing more real aspects to the optimization problems in engineering. Strategies should be considered for automatic grouping of members without the need for preliminary analysis by the designer. For this, special encodings will be used via cardinality constraints as can be seen in the structural optimization

The codes used to solve the optimization problems presented in this chapter are

written in Matlab® language, and the final results, as well as the figures, are

Cláudio H.B. Resende, José P.G. Carvalho, Afonso C.C. Lemonge\* and Patricia H. Hallak Graduate Program in Civil Engineering, Federal University of Juiz de Fora, Juiz de Fora, Brazil

\*Address all correspondence to: afonso.lemonge@ufjf.edu.br

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
