Simulation of short fiber reinforced composites

Besides standard plastic materials, more and more short and long fiber reinforced plastic materials are used to manufacture automotive components, aircraft parts, sports equipment and standard household appliances. This development is due to the higher requirements for stiffness and strength. Nevertheless, the costs of production shall be kept low, using special manufacturing techniques. Since the local properties of this group of materials are highly dependent on the production process, not only new material models are necessary, which allow to consider the complex load bearing capabilities and damage mechanisms of these materials properly, but also new modeling techniques allowing to close the simulation process chain for these materials.

Contents

• Introduction to composite materials
• Explanation of anisotropy and direction definitions
• Material modeling
• Introduction and discussion of material models being available in LS-DYNA for short fiber reinforced composite modeling
• Failure criteria established by Tsai-Hill, Tsai-Wu and *MAT_GENERALIZED_DAMAGE
• Evaluation of process simulation results (esp. injection molding)
• Homogenization strategies
• Mori-Tanaka, self-consistent method
• Closure-Approximations
• Introduction into ENVYO® to close the simulation process chain for short fiber reinforced composites