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RISMechanism of Fast Time-Varying Vibration for Rotor–Stator Contact System: With Application to Fault Diagnosis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Fast time-varying (FTV) phenomena, such as significant speed changes, FTV stiffness, and vibration signals with fast-oscillated instantaneous frequency (IF), carry critical fault information of high-speed rotating machines. ...
A New Dynamic Model of Ball-Bearing Rotor Systems Based on Rigid Body Element
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Ball-bearing rotor systems are key components of rotating machinery. In this work, a new dynamic modeling method for ball-bearing rotor systems is proposed based on rigid body element (RBE). First, the concept of RBE is ...
Blade Strain Peak Localization Method With Single Transducer During Multimode Vibration
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The dynamic strain/stress measurement of blades provides an effective method to anticipate fatigue life and investigate of failure causes. Unlike the blade strain peak is fixed during singlemode, which can be measured by ...
Micromechanical Modeling of Viscoplastic Behavior of Laminated Polymer Composites With Thermal Residual Stress Effect
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, a multiscale approach has been developed for investigating the ratedependent viscoplastic behavior of polymer matrix composites (PMCs) with thermal residual stress effect. The finitevolume direct averaging ...
A Novel Method for Force Identification Based on the Discrete Cosine Transform
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Force identification is a classical inverse problem, in which the measured data and the mathematical models of mechanical structures are used to determine the applied force. However, the identified force may seriously ...
A Dynamic Modeling Approach for Spindle Bearing System Supported by Both Angular Contact Ball Bearing and Floating Displacement Bearing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a new dynamic modeling approach for spindle bearing system supported by both angular contact ball bearing (ACBB) and floating displacement bearing (FDB). First, a dynamic model of FDB is developed based ...
A Frequency Shift Synchrosqueezing Method for Instantaneous Speed Estimation of Rotating Machinery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Instantaneous speed (IS) measurement is crucial in condition monitoring and realtime control of rotating machinery. Since the direct measurement of instantaneous rotating speed is not always available, the vibration ...
Time-Varying Chatter Frequency Characteristics in Thin-Walled Workpiece Milling With B-Spline Wavelet on Interval Finite Element Method
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: As the most significant material removal method, milling plays a very important role in the manufacturing industry. However, chatter occurs frequently in milling, which will seriously affect the production efficiency. The ...
Dynamic Force Identification in Peripheral Milling Based on CGLS Using Filtered Acceleration Signals and Averaged Transfer Functions
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Dynamic milling forces have been widely used to monitor the condition of the milling process. However, it is very difficult to measure milling forces directly in operation, particularly in the industrial scene. In this ...
Influence of Sliding Friction on the Dynamic Characteristics of a Planetary Gear Set With the Improved Time-Varying Mesh Stiffness
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Acting as an important internal excitation, sliding friction can cause the vibration and noise of the planetary gear set. In this paper, a dynamic model is developed to study the influence of sliding friction on the dynamic ...