ReliaSim is a purpose-built modeling and analysis toolkit designed to evaluate how material flows through complex, high-speed operations under real-world conditions. Built on a foundation of discrete rate simulation (DRS), ReliaSim represents production systems as interconnected networks of buffers, constraints, processing steps, and interruptions, allowing both capacity limits and operational variability to be modeled explicitly via experiments to deliver the best possible results.
Instead of treating equipment in isolation, ReliaSim models the full system as a continuous flow from supply to output. Users define rate limits, buffer capacities, conversion relationships, and interruption behavior, then simulate how these elements interact over time. This makes it possible to quantify the impact of blocking, starvation, downtime, and accumulation, and to observe how local changes propagate through the broader network.
ReliaSim is designed for environments where performance is shaped by uncertainty—random failures, variable processing rates, and competing constraints. Common applications include evaluating buffer sizing strategies, estimating throughput under different reliability assumptions, analyzing OEE sensitivity, and comparing alternative process configurations. By combining simulation, statistical modeling, and visual diagnostics in a single workflow, ReliaSim enables rapid exploration of improvement scenarios before changes are implemented in the physical system.
While ReliaSim is most often applied to manufacturing and production lines, its flow-based approach extends naturally to logistics networks, material handling systems, and any process where resources move through connected stages over time.
In the sections that follow, you’ll be introduced to the core interface elements and modeling concepts that form the foundation of this workflow.
You can get started by installing ReliaSim, get an overview of the interface, or get started with the Quick Start Guide