Abstract
In the present study, a coupled 3D transient thermo-chemical analysis together with 2D plane strain mechanical analysis is carried out for the pultrusion process. For the mechanical analysis, a cure hardening instantaneous linear elastic (CHILE) approach is used of a thin beam profile made of glass fibre and epoxy resin. The applied approach is efficient and fast to investigate the residual stresses and deformations together with the distributions of temperature and degree of cure obtained from the thermo-chemical analysis.
Highlights
Characterization of mechanical behaviour is an important study for entire structures under loading [1]-[3], and for the separate parts in time of their production [4] since stresses and deformations caused by the process may occur
The investigation of process-induced variations like residual stresses and deformations should be performed for a better control of mechanical behaviour of pultrusion process
The thermo-mechanical finite element model is created in the finite element code ANSYS Mechanical, based on the cure hardening instantaneously linear elastic method (CHILE) as in [17] to investigate the residual stresses and deformations of pultruded beam profile made of glass fibre and epoxy resin
Summary
Characterization of mechanical behaviour is an important study for entire structures under loading [1]-[3], and for the separate parts in time of their production [4] since stresses and deformations caused by the process may occur. Thermo-chemical modelling in transient and steady state analyses are developed for a better understanding of pultrusion processes to analyse the distributions of temperature and degree of cure inside the die, using the finite element methodology [7]-[9] finite difference methodology [10], [11], based on the nodal control volume method. It is well known, that in time of manufacturing process of thermoset matrix composites, material characteristics of resin vary during the glass transitions from rubbery to solid state. The thermo-mechanical finite element model is created in the finite element code ANSYS Mechanical, based on the cure hardening instantaneously linear elastic method (CHILE) as in [17] to investigate the residual stresses and deformations of pultruded beam profile made of glass fibre and epoxy resin
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