An anisotropic non-linear material model for glass fibre reinforced plastics

• This paper aims to present a methodology to predict the anisotropic and non-linear behaviour of glass fibre reinforced plastics using finite element methods. A material model is implemented in order to remedy the need of multiple material definitions, and to control the local plastic behaviour as a function of the fibre orientation. Injection moulding simulations traditionally provide second order orientation tensors, which are considered together with a homogenization scheme to compute local material properties. However, in the present study, fourth order tensors are used in combination with traditional methods to provide more accurate material properties. The elastic and plastic response of the material model is optimized to fit experimental test data, until simulations and experiments overlap. The proposed material model can support design engineers in making more informed decisions, allowing them to create smarter products without the need of excessive safety factors, leading to reduced component weight and environmental impact. 

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Materialteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering (hsv//eng)

Keyword

Calibration

Fibre orientation

GFRP

Local material properties

Anisotropy

Elastomers

Environmental impact

Finite element method

Glass fibers

Injection molding

Product design

Reinforced plastics

Reinforcement

Safety factor

Tensors

Fourth-order tensors

Homogenization scheme

Multiple materials

Nonlinear behaviours

Nonlinear materials

Fiber reinforced plastics

Materials Engineering

Materialteknik

Publication and Content Type

ref (subject category)

art (subject category)