Reliability has been considered as an important design measure in many industrialsystems and system designers have made efforts to achieve more reliable system structure. Component reliability and redundancy allocation in each subsystem have mainly been used to improve the system reliability. In the recent highly developed industry, there are many kinds of available components which have different features (e.g. reliability, cost, weight, volume, etc.). In this paper, we consider the redundancy allocation problems with multiple component choices (RAP-CC) subject to some resource constraints. A simulated annealing (SA) algorithm is presented for the problem and several test problems are experimented to show its efficiency and effectiveness. It is found that the SA algorithm gives better solutions than other previous studies within a few seconds of the CPU-time.
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