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海缆钢丝铠装缠绕呈复杂的空间形状,正确建立海缆铠装三维模型是对其进行有限元分析的必要前续步骤。针对在建立有限元模型中的一些错误作法,文章在三维空间几何变换和数学推导的基础上,研究发现铠装钢丝在空间缠绕时在海缆横截面呈非椭圆形状,给出缠绕钢丝横截面和轴剖面的正确数学表达式,同时给出了在指定缠绕半径、钢丝半径下最多缠绕铠装钢丝根数的计算方法,给出了在指定缠绕半径、铠装钢丝半径和铠装钢丝根数条件下的捻角计算方法。
Submarine cable wire armor winding complex spatial shape, the correct establishment of three-dimensional model of submarine cable armor is necessary for its finite element analysis of the next steps. Aiming at some wrong practices in the establishment of finite element model, based on the geometric transformation and mathematical derivation in three-dimensional space, the paper finds that the armored steel wire has a non-elliptical shape in the cross-section of the cable when it is wound in space, And the correct mathematical expressions of the section of the shaft, and gives the calculation method of the maximum number of wound steel wires under the specified winding radius and wire radius, and gives the calculation formulas of the radius of the armored steel wire and the number of the armored steel wires Calculation method of twist angle under the condition of.