To optimize the structure of the mechanical spiral wound PVC-U lined pipes and improve their ring stiffness.The model of spiral-wound lined pipe ring stiffness test was established based on ANSYS.Analyzed the effect of different design parameters:the T-rib upper thickness(a),the T-rib waist width(b),the T-rib height(h)and the arc radius(r)on the ring stiffness and pipe material volume of spiral-wound lined pipe.Combined with orthogonal tests to determine the optimum design parameters.The results showed that the influence of different design parameters on the ring stiffness and pipe material volume of spiral-wound lined pipes were,in descending order,the T-rib height,the T-rib waist width,the T-T-rib upper thickness and the arc radius.The optimized optimum design parameters were a=2.5 mm,b=4.5 mm,h=28 mm,r=1.5 mm.Compared with previous one,the spiral-wound lined pipe ring stiffness was increased by 32.17％and the pipe material volume was increased by only 11.43％.The finite element analysis results showed that the upper plate pressure and the pipe material volume tend to increase gradually with the increase of the T-rib upper thickness,the T-rib waist width and the T-rib height.It showed that the upper plate pressure first decreased and then increased with the increase of arc radius,and the pipe material volume almost unchanged.
关键词
螺旋缠绕内衬管/环刚度/有限元模拟/结构优化/正交试验
Key words
spiral-wound lined pipe/ring stiffness/finite element simulation/structural optimization/orthogonal experiment
维普
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