The space station solar array is usually flexible cable/membrane structure with large developement area and plenty of mechanism links. It is necessary to establish a fine finite element model, and analyze the transient deformation and stress under high strength on-orbit load conditions. By using the mechanical properties of the Gap element, the inverted Gap elements is used as the connecting unit between the flexible substrate and the storage boxe. Several problems such as pretigthening force on flexible substrate, simulation of discontinuous tension and compression stiffness of the cable, elastic deformation offset of the storage boxe are solved in one stroke. The results of transient shear force and bending moment of improtant companents of solar array are obtained successfully, which provides important decision basis for product design. The results also show that there are significant shortcomings in the application of linear model to this promlem.
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