Advancing simulation technologies are making it possible for engineers to construct models of increasing complexity and fidelity. Southwest Research Institute (SwRI®) has investigated integrated analysis techniques that account for the dynamic interaction of cylinder load, hydrodynamic bearing orbits and flexible structural components in a time-based multi-body structural simulation. Misalignment of the main bearing bore is also simulated to investigate a condition that affects this type of mechanical system. This paper describes general modeling techniques implemented in ADAMS/Engine and how the component models influence the prediction of crankshaft stress through simulation of an HBA-6 engine/compressor. The HBA-6 is one of a class of reciprocating compressors used in the gas pipeline and process industries. It has a unique layout of power and compressor cylinders that helps to highlight the robustness of the simulation technique.

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