Dynamic analysis on supporting structure of air borne vehicle subjected to random vibrations

Abstract

The design of electronic component plays a crucial role in proper functioning of the missile. Vibration is one of the most important loading conditions in electronic systems at different phases such as transportation, handling, captive carry flight and free flight. Unless an electronic system is designed to function in its dynamic environment, there can be many structural problems that may require an extensive amount of redesign and re-testing. Electronic systems are actually subjected to three different phases of dynamic or vibration environment. The first phase is during manufacturing or screening test, the second is during transportation from assembly to plant to the customer and the final phase is in the operational environment. The different components such as electronic components and supporting structure undergo random vibrations resulting in malfunctioning of the system. Since the entire electronic components are mounted on chassis which is supported by the supporting structure, it is vital to ensure its proper design to resist dynamic effects when exposed to vibration environment. Analysis of dynamics of a complete system and interactions between each level is required in order to obtain a complete system model which leads to the solution of vibration problem.The design of electronic components is based on the requirements of the missile. In this project, supporting structure is modified by changing mounting bars and mounting plates. These structures are designed by integrating bars and plate. The aim of this project is to design these structures and perform random vibration analysis individually in ANSYS, to analyse the effects of random vibration on these supporting structures and determine the best supporting structure which reduces the effects of random vibration on the electronic components.