Comsol Functionally Graded Material — Design & Simulation

Abstract — Comsol Functionally Graded Material

Comsol Functionally Graded Material: Civil & Structural Engineering Comprehensive Investigation Integrated Analysis: ETABS · STAAD.Pro · GIS/QGIS · ABAQUS FEA · MATLAB · IoT Sensors · ~13513 Words Chapter 1: Structural Engineering Modeling & Problem Statement The functionality for modeling geomechanics materials augments all of the structural analyses available within the Structural Mechanics Module. To accurately account for real-world effects and behavior in geotechnical analyses, multiphysics effects can be included by combining the features and functionality in the Geomechanics Module with other modules in the COMSOL product suite. For instance, it is possible to model porous media flow, poroelasticity, solute transport, and heat transfer with the Subsurface Flow Module .

Analytical & Numerical Modeling Methodology

The numerous material models available are listed below, with screenshots of their implementation in the software. The Geomechanics Module can be used to define the properties for modeling materials exhibiting soil plasticity. These material models can be used together with linear and nonlinear elastic materials and can be combined with damping, thermal expansion, fibers, and other features. The following soil models are available: The Geomechanics Module includes functionality for defining the properties of materials with failure criteria representative of concrete and rock, including failure due to tensile stress. These material models can be used together with the Linear Elastic Material and Nonlinear Elastic Material features. The following concrete and rock material models are available: The deformation of quasibrittle materials, such as concrete or ceramics, under mechanical loads is characterized by an initial elastic deformation. If a critical level of stress or strain is exceeded, a nonlinear fracture phase will follow the elastic phase. As this critical value is reached, cracks grow and spread until the material fractures. The occurrence and growth of the cracks play an important role in the failure of brittle materials, and there are a number of theories to describe such behavior. The following damage models are available: The Elastoplastic Soil Material feature is used to model stress–strain relationships that are nonlinear even at infinitesimal strains. The following soil material models are available: In addition to elastoplastic material models for soil, the Geomechanics Module includes the following material models and plasticity options for ductile materials, such as metals: Additional elastoplastic material models are available in the Nonlinear Structural Materials Module .

Finite Element Results & Code Compliance

As opposed to hyperelastic materials, where the stress–strain relationship becomes significantly nonlinear at moderate to large strains, nonlinear elastic materials present nonlinear stress–strain relationships even at infinitesimal strains. The following nonlinear elasticity models are available: Additional material models are available with the Nonlinear Structural Materials Module .

Scope & Practical Applications

• High-rise building and spatial frame analysis under seismic & wind loading
• Finite element continuum modeling in ABAQUS for non-linear material plasticity
• Classical lamination theory (CLT) and failure prediction for composite structures
• Spatial hazard mapping, landslide susceptibility, and catchment terrain analysis in QGIS
• Detailed bar bending schedules (BBS), structural drawings, and calculation booklets