论文信息 - DEPLOYMENT SIMULATION OF ULTRA-LIGHTWEIGHT INFLATABLE STRUCTURES

DEPLOYMENT SIMULATION OF ULTRA-LIGHTWEIGHT INFLATABLE STRUCTURES

Dynamic deployment analyses of folded inflatable tubes are conducted to investigate modeling issues related to the deployment of solar sail booms. The analyses are necessary because ground tests include gravity effects and may poorly represent deployment in space. A control volume approach, available in the LS-DYNA nonlinear dynamic finite element code, and the ideal gas law are used to simulate the dynamic inflation deployment process. Three deployment issues are investigated for a tube packaged in a Z-fold configuration. The issues are the effect of the rate of inflation, the effect of residual air, and the effect of gravity. The results of the deployment analyses reveal that the time and amount of inflation gas required to achieve a full deployment are related to these issues.

Arthur R. Johnson | A. R. Johnson | John T. Wang | John T. Wang

[1] A. B. Chmielewski,et al. The Gossamer Initiative , 2000, 2000 IEEE Aerospace Conference. Proceedings (Cat. No.00TH8484).

[2] Colin R. McInnes,et al. Solar Sailing: Technology, Dynamics and Mission Applications , 1999 .

[3] E. Haug,et al. A Finite Element Approach to Occupant Simulation: The PAM-CRASH Airbag Model , 1989 .

[4] R. E. Freeland,et al. Large Inflatable Deployable Antenna Flight Experiment Results , 1997 .

[5] Wing Kam Liu,et al. Nonlinear Finite Elements for Continua and Structures , 2000 .

[6] M. Salama,et al. Simulation of deployment dynamics of inflatable structures , 1999 .

[7] Charles R. Steele,et al. Inflation of Rolled Tubes , 2000 .

[8] Donald J. Nefske,et al. A New CAL3D Airbag Inflation Model , 1988 .

[9] Jerry I. Lin,et al. Explicit algorithms for the nonlinear dynamics of shells , 1984 .