Analysis of Vibration and Thermal of a Modeled Circuit Board of Automated External Defibrillator (AED) Medical Device

TL;DR

This study models and analyzes the vibration, thermal behavior, and frequency response of an AED circuit board using Ansys, providing insights into its mechanical and thermal performance under various conditions.

Contribution

It introduces a detailed finite element model of an AED circuit board, calibrated with static and dynamic loading, and includes thermal analysis considering heat dissipation effects.

Findings

Frequency analysis with 0.0003% error after prestressed modification

Vibration characteristics of the circuit board identified

Thermal effects on circuit components assessed

Abstract

In this research, the AED was modeled with the Ansys 2020 workbench and calibrated based on static and dynamic loading to verify the static displacement with the first set of five frequencies obtained based on the un-prestressed conditions. With modification, using the prestressed analysis, the next set of frequencies obtained gives an improved result with 0.0003 percent error difference between each frequency. The modeled Circuit board was used to examine the vibration and dynamic analysis for the rigid board. Likewise, the thermal analysis was conducted on the modeled Circuit board with the heat source as the battery and the rate of dissipation of heat around the board and its effect on the circuit components.