基于有限元的钢带增强聚乙烯螺旋波纹管结构优化

On the Structural Optimization of Spirally Wound Corrugated Polyethylene Pipes Reinforced with Ribbed Steel Based on the Finite Element

为降低钢材用料,同时提高环刚度,对钢带增强聚乙烯螺旋波纹管进行结构优化。在Workbench中建立计算钢带增强聚乙烯螺旋波纹管环刚度的有限元模型,利用实验验证有限元模型的有效性。将钢带厚度、圆弧夹角、圆弧半径、隆起高度、边缘长度和螺距作为设计变量,以每延米钢带质量为结构优化目标,环刚度为约束条件。优化后的钢带增强聚乙烯螺旋波纹管环刚度较之前增大28.93%,每延米钢带质量降低10.13%。

In order to reduce the amount of steel used, and improve the stiffness of the rings, the structure of the spirally wounded cor- rugated polyethylene pipes reinforced with ribbed steel is optimized. The finite element model is created in Workbench to calculate the ring stiffness of the spirally wounded corrugated polyethylene pipes reinforced with ribbed steel. The validity of the finite element model is proved by experiments. The steel belt thickness, circle intersection angle, circle radius, peak height, and pitch are set as the design parameters; and the weight of ribbed steel per meter as the goal for the structure optimization; and the stiffness of the rings as the re- striction condition. After the optimization, the ring stiffness increases by 28.93%, while the ribbed steel per meter reduced by 10.13%.