Desıgn Of Vıbratıon Isolator And Fınıte Element Analysıs


Thesis Type: Postgraduate

Institution Of The Thesis: Gazi Üniversitesi, Fen Bilimleri Enstitüsü, Turkey

Approval Date: 2020

Thesis Language: Turkish

Student: MEHMET KURAN

Supervisor: MURAT TOLGA ÖZKAN

Abstract:

Vibration movements are very effective in mechanical systems. Forced vibrations caused by dynamic loads can cause fatigue and crack ruptures or plastic deformations in mechanical structures. To prevent this, structures with different principles are designed to transmit or dampen vibration. The energy exposed by the damping effect is transformed into other forms to prevent the system from affecting. The energy of the system can be dampened by converting it into heat by Coulomb or viscous friction. Insulators, on the other hand, prevent the destructive effects of mechanical vibrations based on different principles. Insulators generally prevent the vibration source in the system from reaching the desired parts. For example, insulators are used in applications such as internal combustion engines, washing machines or optical focusing systems. In the thesis study, a design has been put forward to prevent the various electronic materials from being damaged by being exposed to the vibration inside the aircraft. Copper is used in the design to avoid the effects of rubber material from aging or environmental conditions. Since copper cannot provide hyperelastic effects, the concept of Static High Dynamic Low Stiffness is used in this problem. Since the springs are critical in this concept, the effects of the geometric dimensions are examined. The current models and analysis methods have been confirmed. The design is put forward by making choices according to these effects among the options with different cross sections. The resulting design was tested by exposing it to random vibrations with a sample load. While performing these analyzes, finite element analysis approach and ANSYS program were used. During the design phase, PTC Creo 3.0 program was used. As a result of the study, by using linear elements, a higher performance insulator design was made thanks to the concept of Static High Dynamic Low Stiffness