Constitutive modeling involves the development of mathematical relationships to describe how materials respond to different types of loads or deformations. It is used in various fields of engineering and physics to predict the behavior of materials under different conditions, such as stress, strain, temperature, and time. Constitutive models can range from simple linear relationships to complex nonlinear equations, depending on the material properties and the specific behaviors being modeled. This research area is crucial for designing and analyzing structures, materials, and systems in a wide range of applications.