In this paper an attempt is made to modify a distributed genetic algorithm (DGA) to minimize
the weight of steel frames. The main aspects of modifications include the twin analogy and a
number of mutation schemes. Although the mutation is a secondary operator in the GA, it
plays an influential role in diversifying the population and exploring more feasible design
space. In this research, four different mutation schemes are examined and their effects on
convergence to optimum solutions are evaluated. Using three benchmark examples, it is …