mechanical-engineering

Most engineering formulas assume the inputs are known exactly. Reality is not so tidy. A machined dimension is a nominal value plus a distribution. A material property is a mean with scatter. A load is a best estimate with a range. When several of those uncertain inputs feed into one output, the question stops being "what is the answer" and becomes "what is the spread of answers, and how often do…

Purpose This study aims to present and validate a hybrid motion–measurement control architecture and a traceability-oriented human–machine interface (HMI) for a three-DOF 3-prismatic–spherical–prismatic (3-PSP) parallel manipulator configured as a micro-coordinate measuring machine (CMM), improving stability, reproducibility and metrological traceability. Design/methodology/approach Control softw…

Abstract In this study, the mechanical performance of triply periodic minimal surface (TPMS) structures under compression load, which are widely used in biomedical applications, was systematically investigated. The aim of the study was to compare the mechanical strength, energy absorption and surface-to-volume ratio of structures fabricated with different TPMS types (diamond, gyroid, primitive), …

Abstract Maintaining effective sealing in turbomachinery is critical to operational stability and efficiency. Labyrinth seals, widely used for their favorable leakage control, can introduce destabilizing forces that affect rotor dynamics. This study investigates the calculation of dynamic coefficients in straight labyrinth seals with teeth on the stator (TOS) using a three-dimensional Computation…