A Study on Tensile Properties and Non-linear Behavior Analysis of Membrane for Stratospheric Airship Envelop

성층권 비행선용 막 재료의 인장 물성 측정 및 비선형 거동에 관한 연구

The material properties of membrane for stratospheric airship is experimentally investigated. Mechanical tensile properties of the membrane material at room, high and low temperature are measured using instron with thermal chamber. Experimentaly, material non-linearity is observed at room and high temperature. In order to simulate material non-linearity caused by the uniaxial extension curve of a woven fabric, the nonlinear hyperelastic problem is considered with finite clement program of ABAQS. Numerical results are compared with experimental results.