Год выпуска: 2012 Автор: Thomas Gionet Издательство: LAP Lambert Academic Publishing Страниц: 164 ISBN: 9783848436590
Описание
This research presents the structural response of an internally pressurized and regolith covered frame-membrane design. The structure is subjected to impact and thermal loading and incorporates the effects of added mass due to regolith cover and the stress stiffening from internal pressurization. The impact loading is analytically determined considering a moving projectile hitting the midpoint of a frame member. Results from static, frequency and dynamic nonlinear finite element analyses are presented. Frequency is affected by external temperature, internal pressurization and added regolith mass. Increasing external temperature increases the natural frequencies and decreasing temperature decreases the frequencies. Internal pressure increases frequencies slightly and the regolith mass drastically reduces frequency. Static analyses show the external temperature and the internal pressurization have a large effect on displacements and stresses. Dynamic results due to impact load show...
