首先对弹性五杆机构进行有限元分析，通过机构梁单元节点位移间的关系，建立起弹性五杆机构单元质量矩阵与刚度矩阵以及弹性动力学模型。
Firstly, the links of the plane five-bar linkage mechanism is simulated by beam element, the mass matrix, stiffness matrix of linkage mechanism and elastic dynamic model of system are established.
该方法基于反射面天线的结构分析，利用变形反射面单元的节点位移信息得到变形后的反射面的网格模型。
Based on the structural analysis of the reflector antenna, a mesh model of the distorted reflector is obtained through the node displacement of elements of the distorted reflector.
计算了外荷载作用下各索单元轴力及节点位移的变化趋势。
Under the loads every calbe unit strength of axle and node displacement's variation tendencies are computed.
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