Numerical Assessment of Damage Parameters for a Hard Interface Model.

Area of Science:

• Computational mechanics
• Materials science
• Adhesion science

Background:

• Adhesive interface models simplify thin elastic layer simulations, avoiding computationally expensive volumetric methods.
• Parameter identification in these models is challenging due to the small scale of direct observation.

Purpose of the Study:

• To numerically assess two key parameters: damage energy threshold and damage viscosity.
• To provide physical interpretation for these parameters within a hard interface model.

Main Methods:

• Utilized a previously formulated hard interface model.
• Employed a numerical assessment protocol using macroscopic experimental data from structural adhesives.

Main Results:

• Successfully performed a numerical assessment of the damage energy threshold and damage viscosity parameters.
• Gained insights into the physical meaning and interpretation of these model parameters.

Conclusions:

• The numerical assessment protocol effectively aids in understanding hard interface model parameters.
• Macroscopic data is valuable for calibrating and interpreting models of thin elastic layers and adhesive interfaces.