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RISHybrid Survey Networks: Combining Real-Time and Static GNSS Observations for Optimizing Height Modernization
Publisher: American Society of Civil Engineers
Abstract: To derive ellipsoid heights on passive marks with centimeter-level accuracy, many current specifications require the collection and adjustment of long-duration, static, postprocessed global navigation satellite system ...
A Direct Method for Mapping the Center of Pressure Measured by an Insole Pressure Sensor System to the Shoe's Local Coordinate System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A direct method to express the center of pressure (CoP) measured by an insole pressure sensor system (IPSS) into a known coordinate system measured by motion tracking equipment is presented. A custom probe was constructed ...
Torque Converter Capacity Improvement Through Cavitation Control by Design
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Heavy cavitation in torque converters can have a significant effect on hydrodynamic performance, particularly with regards to the torque capacity. The objective of this study is to therefore investigate the effects of pump ...
Nonlinear Analysis of Rub Impact in a Three Disk Rotor and Correction Via Bearing and Lubricant Adjustment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Rubbing between rotating and stationary surfaces in turbomachinery can result in catastrophic failures if not caught quickly. Removing the rub impact can then often require time consuming and expensive solutions including ...
Gas Expanded Lubricant Performance and Effects on Rotor Stability in Turbomachinery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Gasexpanded lubricants (GELs) are tunable mixtures of synthetic oil and carbon dioxide that enable dynamic control of lubricant viscosity during bearing operation. This control can help reduce bearing power loss and operating ...
Transient Analysis of Gas Expanded Lubrication and Rotordynamic Performance in a Centrifugal Compressor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Gasexpanded lubricants (GELs) have the potential to increase bearing energy efficiency, longterm reliability, and provide for a degree of control over the rotordynamics of highspeed rotating machines. Previous work has ...
Influence of Stator Blade Geometry on Torque Converter Cavitation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Cavitation in torque converters may cause degradation in hydrodynamic performance, severe noise, or even blade damage. Researches have highlighted that the stator is most susceptible to the occurrence of cavitation due to ...
A Numerical Investigation of the Effect of Inlet Preswirl Ratio on Rotordynamic Characteristics of Labyrinth Seal
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Full three-dimensional (3D) computational fluid dynamics (CFD) simulations are carried out using ANSYS cfx to obtain the detailed flow field and to estimate the rotordynamic coefficients of a labyrinth seal for various ...
Modeling Reichardt's Formula for Eddy Viscosity in the Fluid Film of Tilting Pad Thrust Bearings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Oil-lubricated bearings are widely used in high-speed rotating machines such as those used in the aerospace and automotive industries that often require this type of lubrication. However, environmental issues and risk-adverse ...