Modelling and Optimal Design of Thick-Walled Composite Pipes under In-Service Conditions

T Wang,O Menshykov,I A Guz,M Menshykova

doi:10.1088/1757-899x/936/1/012046

T Wang, O Menshykov + Show 2 more

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https://doi.org/10.1088/1757-899x/936/1/012046

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Abstract

The current study is focused on the stress-strain analysis of multi-layered thick-walled fibre reinforced composite pipes under torsional load. Three-dimensional elasticity solution has been obtained and Finite Element Method model has been developed to predict the stress-strain distribution and compute the Tsai-Hill failure coefficients. The models have been validated by comparing with the results available in the literature. As a numerical example the composite pipe subjected to pure torsion load has been considered. The effects of the torque magnitude and layers’ thickness for specific pipe lay-ups have been investigated, and the appropriate engineering conclusions and design suggestions have been reported.

Highlights

The current study is focused on the stress-strain analysis of multi-layered thick-walled fibre reinforced composite pipes under torsional load
Composite materials were introduced to a range of technical applications over the last decades
Tsai-Hill failure criterion was used for failure prediction

Summary

Introduction

Composite materials were introduced to a range of technical applications over the last decades. The studies of layered composite pipes subjected to inner pressure and thermomechanical loading were published in [9, 10], where the developed three-dimensional anisotropic elasticity method was applied to compute the thermal stress and deformations. Takayanagi and Kemmochi [13] presented elasticity solution using the equilibrium equations and the boundary and interface conditions, and analysed the appropriate stresses and strains Their approach was further developed and utilised by Menshykova and Guz [14], who focused on the distribution of failure coefficients for multi-layered pipes with specific lay-ups. The computation model of stress distribution and failure coefficients of pipes subjected to combined loading was presented in [15]. The Tsai-Hill failure criterion will be applied to compute the failure coefficients, predict the pipe failure and formulate the design recommendations

Problem statement

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