Related Experiment Video
Updated: Mar 2, 2026
08:53
In Vitro Model Integrating Substrate Stiffness and Flow to Study Endothelial Cell Responses
Published on: July 19, 2024
941
PoroViscoElastic model to describe hydrogels' behavior
1Department of Industrial Engineering, Università degli Studi di Salerno, 84084 Fisciano (SA), Italy.
Summary
This study presents a 3D model for poroviscoelasticity in hydrogels, crucial for understanding their water-coupled mechanics. The model aids in analyzing how hydrogel properties influence their complex behavior.
Area of Science:
- Materials Science
- Solid Mechanics
- Biomechanics
Background:
- Hydrogels are hydrophilic polymer networks that absorb significant water.
- Their mechanical behavior is intrinsically linked to water transport, leading to poroviscoelasticity.
- Poroviscoelasticity combines viscoelasticity of the polymer network and poroelasticity from water movement.
Purpose of the Study:
- To develop a 3D monophasic model for simulating hydrogel poroviscoelasticity.
- To analyze hydrogel behavior within the framework of nonlinear solid mechanics.
- To investigate the influence of various model parameters on hydrogel performance.
Main Methods:
- Development of a 3D monophasic model.
- Implementation using finite element method (FEM) in commercial software.
- Application of mass and momentum balance equations with non-equilibrium thermodynamics constitutive relations.
- Inclusion of initial and boundary conditions for a comprehensive simulation.
Main Results:
- A functional 3D model capable of depicting poroviscoelastic behavior in hydrogels was successfully developed.
- The model integrates polymer network mechanics with fluid transport phenomena.
- A parametric study was conducted to evaluate parameter significance.
Conclusions:
- The developed model provides a robust tool for studying hydrogel poroviscoelasticity.
- Understanding parameter influence is key to predicting and controlling hydrogel mechanical responses.
- This work advances the simulation capabilities for complex hydrogel systems.
Related Concept Videos
01:22Generalized Hooke's Law
2.9K
The generalized Hooke's Law is a broadened version of Hooke's Law, which extends to all types of stress and in every direction. Consider an isotropic material shaped into a cube subjected to multiaxial loading. In this scenario, normal stresses are exerted along the three coordinate axes. As a result of these stresses, the cubic shape deforms into a rectangular parallelepiped. Despite this deformation, the new shape maintains equal sides, and there is a normal strain in the direction of the...
2.9K
01:15Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
651
Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
651
01:34The Fluid Mosaic Model
181.8K
The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of membranes and serves as a foundation for future membrane-related studies. The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral molecules are loosely bound, defining the cell’s border and providing fluidity for optimal function.
181.8K
01:19Members Made of Elastoplastic Material
441
The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...
As the bending moment...
441
01:20Elastic Strain Energy for Shearing Stresses
557
As discussed in previous lessons, strain energy in a material is the energy stored when it is elastically deformed, a concept crucial in materials science and mechanical engineering. This energy results from the internal work done against the cohesive forces within the material. When a material undergoes shearing stress and corresponding shearing strain, the strain energy density, which is the energy stored per unit volume, is calculated. Within the elastic limit, where the stress is...
557