Parameters Identification of the Anand Material Model for 3D Printed Structures.

Area of Science:

• Materials Science
• Mechanical Engineering
• Additive Manufacturing

Background:

• 3D printing is increasingly used for machine parts, necessitating accurate material models for performance prediction.
• Selecting appropriate material models and parameters is crucial for simulating the behavior of 3D-printed components.
• Acrylonitrile butadiene styrene (ABS-M30) is a common material in 3D printing, requiring characterization for engineering applications.

Purpose of the Study:

• To determine the material parameters for the Anand material model specifically for ABS-M30 plastic used in 3D printing.
• To validate the Anand model's applicability to ABS-M30 by comparing simulation results with experimental data.
• To assess the limitations of the Anand model concerning the anisotropic behavior of 3D-printed materials.

Main Methods:

• Utilized the genetic algorithm (GA) coupled with finite element method (FEM) calculations to determine material parameters.
• Conducted experimental tensile and indentation tests at various temperatures (23°C, 44°C, 60°C, 80°C).
• Designed experiments to capture aspects of material relaxation and creep behavior for comprehensive validation.

Main Results:

• Successfully determined Anand material model parameters for ABS-M30.
• FEM simulations, adjusted to experimental data, showed good agreement for non-anisotropic behavior.
• The Anand model is suitable for ABS-M30 when anisotropic effects are not the primary focus.

Conclusions:

• The Anand material model can be effectively applied to ABS-M30 for predicting mechanical behavior in 3D-printed parts, provided anisotropy is not a critical factor.
• Further research is needed to identify material models capable of capturing the anisotropic characteristics of 3D-printed plastics.
• Accurate material parameter determination is vital for the reliable engineering application of additively manufactured components.