Bending Characteristics and Preparation Processes of Steel Wire Wound Polyethylene Composite Pipes
The issues of delamination,wrinkling,and wire detachment in steel wire mesh reinforced polyethylene composite pipes during the coiling and engineering applications hinder their use in high-pressure,high-corrosion-resistance,and high-strength fields.To address the above issues,the composite pipe structural materials were selected and an ABAQUS finite element constitutive model for these pipes was established.A bending failure simulation of steel wire layer-wound reinforced polyethylene composite pipes was conducted and the stress-strain variations and the causes of wrinkling and bulging under different bending angles were analyzed.The developments of optimized manufacturing processes for polyethylene composite pipes with simultaneous applications of adhesive to both the interlayers and steel wires were studied.The optimized process was then subjected to the finite element bending simulation comparison analysis and experimental researches.Results indicate that the optimized steel wire wound reinforced polyethylene composite pipes do not exhibit wrinkling,bulging,delamination,or cracking under the same bending angles.Experimental findings show that their performance indicators of bending,peeling,short-term static pressure,and instantaneous burst were significantly higher than those of standard values.
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