Components assignment problem to maximize the network reliability in the case of each component has an assignment cost and lead-time is never discussed. Therefore, this paper focuses on solving this problem under an assignment cost and total lead-time constraints. The presented problem is called an optimal components assignment problem (OCAP) and it is based on three constraints namely total assignment cost, total lead-time, and system reliability. Also, an approach based on random weighted genetic algorithm (RWGA) is presented to solve the OCAP. The results revealed that an optimal components assignment leads to the maximum reliability, minimum assignment budget and minimum total lead-time using the proposed approach.

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