Analysis of the Force-thermal Properties of a Combined Lunar Soil-flexible Inflatable Membrane Shielding Layer
A construction plan for an operated lunar base is proposed,considering future demands for rapid construction,low transportation costs,and high reliability.The program combines a flexible inflatable membrane composite protective layer from lunar soil with a rigid habitat module.The flexible inflatable membrane is the main load-bearing structure,with a strict habitat module underneath.To ensure stability,modal analysis is performed on the flexible inflatable membrane units to investigate the inherent vibration frequency of the membrane unit and its relationship with internal pressure and the thickness of the lunar soil cover.This helps prevent resonance with lunar quakes.The construction plan involves placing soft and sintered lunar soil on the flexible inflatable membrane.Thermal and radiation simulations are conducted to determine the thickness of both materials,ensuring the thermal insulation and radiation shielding effects of the protective layer.Mechanical analysis is then employed to explore the relationship between the deformation of the flexible inflatable membrane and its thickness,internal pressure and rib radius under a given thickness of the protective layer.Simulation and calculation results indicate that the proposed structure can effectively cope with the environment of lunar particle radiation,moonquake and large alternating temperature difference,and the structure has good mechanical stability,which can provide a reference for the construction of lunar bases in the future.