A loaded tooth contact analysis model was developed to assess transmission error by incorporating profile errors in a helical gear pair. Profile for all teeth of both the pinion and wheel were measured, mean computed integrated into model. To validate model, static (STE) measured experimentally. The experimental results, particularly peak-to-peak (PPSTE) relation torque tooth-meshing harmonics, demonstrated consistency with simulation outcomes. Subsequently, employed investigate impact...

Abstract Wind turbines are eco-friendly energy sources that generate electricity from wind power. Among their various components, gearboxes constitute the most critical loss owing to longest downtime. To guarantee durability, a flexible pin was designed based on original straddle-mounted for enhanced tooth load sharing and distribution in planetary gear set (PGS) of turbine gearbox (WTGB). The improved durability evaluated by calculating mesh factor face contact stress comparing these values...

Uneven load sharing of a planetary gear set is the main cause preventing miniaturization and weight reduction gearbox. Non-torque loads carrier pinhole position errors are factors that worsen load-sharing characteristics. However, their effects seldom analyzed at system level especially for an off-road vehicle. To make up this gap, some simulation models proposed to investigate floating members on characteristics strength with non-torque error. When error not considered, mesh factor...

The ride vibration of a tractor is affected mostly by the stiffness and damping coefficient seat suspension, cabin rubber mounts, tires. However, in case tires, stiffnesses coefficients have not been researched adequately thus far, it simple to measure these characteristics. In this study, method for measuring analyzing which were input parameters simulation, was proposed. cleat test, proposed did require separate complicated test equipment, unlike conventional methods. conducted simply...

In gear design, performance metrics such as safety factors for tooth root stress and surface durability, peak-to-peak static transmission error (PPSTE), efficiency, mass, volume are considered. They calculated by the geometric parameters of macro- micro-geometry, manufacturing errors related to geometry significantly affect performance. However, previous studies have only focused on micro-geometry errors. this study, Monte Carlo-type robustness analysis was performed considering thickness,...

Highlights Tractor ride vibrations were evaluated under various conditions according to type of cab suspension. Ride measured on flat and bumpy roads using four tractors with different suspension types. Tractors hydro-pneumatic exhibited smaller than rubber mounts. Semi-active control resulted in those resulting from passive control. Abstract . In this study, tractor the suspension, effects support methods these determined. equipped types analyzed based ISO Standard 2631-1 for human exposure...

Highlights Rattling of tractor power take-off drivelines can be detrimental to operators. A novel driveline model, which includes a torsional damper, was constructed. The behavior the model validated against that an actual driveline. used determine optimal damper parameters. These parameters were by laboratory tests. Abstract. Rattle noise and high levels vibration in agricultural tractors lower productivity operators may cause serious health issues them. This study examined method for...

Highlights Prediction of synchronization time was performed for a power-shift transmission. We derived an analytical equation and developed multi-body dynamics model. Model results were compared with test on synchronizer. Reduced computation design achieved automatic transmission design. Abstract . Synchronization determines the capacity shift actuator system. Existing approaches measuring this only consider one rotational inertia therefore cannot be applied to (PST) tractor wet multi-plate...

In this study, a multi-objective optimal design of planetary gear set was performed considering mass, power loss, and transmission error. particular, the results were analyzed from novel perspective. The implemented methodology minimizes vibration with respect to seven macro-geometry variables. peak-to-peak static error (PPSTE) each pair corresponds excitation source set, reducing PPSTE helps minimize vibration. Thus, calculated using time-varying mesh stiffness obtained through an...

Composite work tools have many components, and complex shapes when compared to standard such as rotaries plows. In addition, the component durability for is critical because load varies severely according soil conditions. This study predicts fatigue life of hub bearing in composite tooling. The loads acting on were measured based field tests, derived using reconstruction method. static safety factor bearing, loads, contact stress inner outer raceways presence truncation analytically...

The ride vibration of a tractor is affected mostly by the stiffness and damping coefficient seat suspension, cabin rubber mounts, tires. However, in case tires, stiffnesses coefficients have not been researched adequately thus far, it simple to measure these characteristics. In this study, method for measuring analyzing which were input parameters simulation, was proposed. cleat test, proposed did require separate complicated test equipment, unlike conventional methods. conducted simply...