Mechanical Analysis of Scissor Structure Based on Finite Element Method

The scissor unit is widely used as the basic element of deployable structure. It uses the FEM build the stiffness matrix of scissor unit, plane scissor structure and triangular prism scissor structure model. The stiffness matrix is effectively agglomerated and the amount of calculation is reduced. The simulation example shows the relationship curves between some main nodes deformation and spread angle,and indicates that plane scissor structure is weakly in bearing the force outside plane, while the stiffness of triangular prism scissor structure is higher and similar along Y and Z axis.