Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 13 of 13 for “"vibration transmission"”.
-
Vibration transmission through machinery foundation and ship bottom structure
Thesis (Mech.E)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.
-
Objective assessment of static and dynamic seats under vehicular vibrations
… seats are reviewed. A comparative study of vibration transmission performance of the seats obtained with a number of subjects representing 50 th percentile male population and with an equivalent passive load is performed. The experimental results are used to identify a Human Response …
-
Design of Adaptive Vibration Control Systems with Applicaion to Magneto-Rheological Dampers
… nonlinear adaptive control systems for reducing vibration transmission in applications such as transportation systems is discussed. The systems studied include suspension systems, such as those used in vehicles, employing nonlinear magneto-rheological (MR) dampers that are controlled to provide …
-
Vibrations in lightweight structures - Efficiency and reduction of numerical models
… in such a way that noise and disturbing vibrations is avoided. To design buildings of high performance regarding sound and vibrations, it is desirable to have tools for predicting the effects of structural modifications prior to construction. The long-term aim of the studies presented in …
-
Analysis and design of wave scattering by weakly non-uniform waveguides
… of pipelines, risers and mooring lines such that vibration transmission is minimized. The objective of this thesis is to understand how to tune the medium small irregularity such that the interaction of the incident wave field with the medium irregularity generates a desired reflected wave field. …
-
Characterization of whole-body vibration for monorail passenger ride comfort
… in all kind of public transports. In monorail, vibration is considered as major factor of discomfort, it transmitted to human body, which contribute many health issues. The aim of this study was to evaluate the whole-body vibration transmission and the effects to the monorail passengers. There …
-
Vibration of railway bridges in the audible frequency range
… existing calculation model for bridge noise and vibration has been tested and alternative calculation methods have<br/>been developed where required. The existing model is based on analytical models for wheel-rail interaction and the calculation of the power input to the bridge. The<br/>response …
-
Nonlinear Mechanical Metamaterial: A Novel Approach Towards Wideband Sound and Vibration Attenuation
… become very popular in the field of noise and vibration suppression, cloaking, wave guide, wave shield, wave absorber owing to its frequency dependent material properties. However, due to the dependency on the linear resonance, the performance of a linear metamaterial is restricted to a narrow …
-
Optimization of the glass fiber forming process for single-tip and small-number-tip positions
… drum, speed control to within 1%, and limited vibration transmission to the fibers while they are in the forming and cooling regions. The pressure control and winder control systems were incorporated into the same LabView interface to assure ease of use. From the interface an operator can set …
-
Implications of nonlinear suspension behaviour for feedforward control of road noise in cars
… main source of nonlinearity in the road noise transmission path. Models of the key components in a car suspension are developed based on the results of the experiments. Models for the front and rear dampers in the Nissan Leaf are validated up to 300 Hz, and analysed to reveal the mechanisms …
-
Elucidating the Relationships Between Spider Size, Joint Stiffness, and the Mechanical Frequency Response of the Body
Spiders use vibrations to sense their surroundings. It has been suggested that the vibration perception in spiders may be altered by the mechanics of the body. I studied the biomechanics of spiders, at the level of leg joints and the whole body. To study joints, I quantified the allometry of leg …
-
Study on Bandgap Manipulation and Structural Vibration Control in Sandwich Metastructures
… exposed to problematic medium- and low-frequency vibrations induced by operational loads, environmental disturbances, and earthquakes. Although conventional vibration isolation and mitigation methods have been widely used, they still face limitations in broadband control of medium- and …