论文信息 - Analysis of Gossamer Structures Using Assumed-Strain Solid-Shell Finite Elements

Analysis of Gossamer Structures Using Assumed-Strain Solid-Shell Finite Elements

The objective of this study is to investigate the applicability of assumed-strain solid-shell finite elements for analysis of gossamer space and near-space structures such as solar sails and scientific balloons. The solid-shell element formulation that alleviates the element locking via the assumed-strain approach has been successfully used for analysis of extremely thin structures. In this study, quadruple precision is explored to further extend the capability of the nine-node assumed-strain solid-shell elements to analyses of extremely thin structures. As examples, geometrically nonlinear static analyses of solar sail ribbons and a square membrane are carried out, without using any stabilizing scheme. Subsequently, the assumed-strain solid-shell element formulation with quadruple precision are successfully used to determine the deformed shape and the stress distribution of a scientific balloon at various altitudes.

Keejoo Lee | Sung W. Lee | Keejoo Lee | S. Lee

[1] Alexander Tessler,et al. Nonlinear Shell Modeling of Thin Membranes with Emphasis on Structural Wrinkling , 2003 .

[2] David W. Sleight,et al. Simulating Nonlinear Deformations of Solar Sail Membranes Using Explicit Time Integration , 2004 .

[3] Chahngmin Cho,et al. AN IMPROVED ASSUMED STRAIN SOLID SHELL ELEMENT FORMULATION WITH BUBBLE FUNCTION DISPLACEMENTS , 1997 .

[4] Chahngmin Cho,et al. An efficient assumed strain element model with six DOF per node for geometrically non‐linear shells , 1995 .

[5] F. Baginski,et al. Structural Analysis of Pneumatic Envelopes: Variational Formulation and Optimization-Based Solution Process , 2002 .

[6] Christopher H. M. Jenkins,et al. Gossamer spacecraft : membrane and inflatable structures technology for space applications , 2001 .

[7] Keejoo Lee,et al. ANALYSIS OF GOSSAMER SPACE STRUCTURES USING ASSUMED STRAIN FORMULATION SOLID SHELL ELEMENTS , 2002 .

[8] S. Lee,et al. A solid element formulation for large deflection analysis of composite shell structures , 1988 .

[9] H. C. Park,et al. A local coordinate system for assumed strain shell element formulation , 1995 .

[10] Willi Schur. Structural analyses of balloons employing various techniques to overcome difficulties posed by the underconstrained nature of these systems , 1996 .