Calibration of a Structural Finite Element Model for a Representative Inflatable Space Structure Utilizing Probabilistic Methods and Surrogate Models

Lyle, Karen H ; Jones, Thomas C

关键词: AERODYNAMIC BRAKES;    CALIBRATING;    COMPUTERIZED SIMULATION;    FINITE ELEMENT METHOD;    INFLATABLE SPACE STRUCTURES;    MATHEMATICAL MODELS;    PROBABILITY THEORY;    RIGID STRUCTURES;    SPACE HABITATS;    STRUCTURAL ANALYSIS;    AEROSPACE ENGINEERING;   

RP-ID  :  NASA/TM?2019-220250,L-20996,NF1676L-32298

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

A structural finite element model representing a novel inflatable airlock concept has been calibrated using full‐scale test data. The concept, denoted as the Non‐Axisymmetric Inflatable Pressure Structure (NAIPS), was developed under NASA’s Minimalistic Advanced Softgoods Hatch (MASH) Program. The current studies extended previous numerical efforts by incorporating the midbody section of the NAIPS to the dome section and calibrating the model with test data using a process that included surrogate models. Brief overviews of the finite element model and calibration process are provided. The completion of the calibration process provided a model that adequately replicated the test data. The successful demonstration of calibration of a finite element model representing an inflatable habitat provides confidence in the ability to use numerical simulations and associated surrogate models to support design and certification of inflatable space habitats.