Determination of the Acoustic Strength of Solar Battery Panel for Space Applications

Abstract

High requirements are imposed on rapidly developing rocket and space technology. One of the most important requirement is the acoustic influence on the structure. In this regard, there is a need to search for methods for predicting and modeling the reaction of individual structural elements of rocket and space technology. Electric energy sources play a prominent role in creation and ensuring the operability of space and rocket technology. These sources are usually solar batteries. The frames of solar panels in the form of ultra-lightweight rigid sandwich panels made of polymer composite materials with honeycomb are most widely used. The paper presents an approach to determining the stress-strain state of solar panel during acoustic loading. The implementing approach is presented in the form of a block diagram with a detailed description of each of the four blocks highlighted below. «Input data» is the definition of the acoustic loading spectrum, material characteristics and panel shape. “Preliminary design” is the definition of the reduced characteristics of the solar panel and the definition of the method of representation the loading. «Finite-element method» is the analysis of either random vibrations or harmonics of a steady state in the package of the finite element method. “Output data” is the selection of interest data obtained from the designing by the finite element method and their subsequent analysis. The developed approach will be useful for enterprises to introduce into the structure analysis process of rocket and space technology for strength under acoustic influence.