FINITE ELEMENT ANALYSIS CAPABILITIES

ARASH NASR

FE TechniquesFE ModellingPre-Processor Packages:▪ Abaqus CAE▪ Ansys WorkBench▪ SolidWorks▪ Altair - HyperWorks ▪ Input File Editors▪ Mathcad , Matlab

Experience :

All the performed FEA

Some of the software I’ve used for creating input files

FE TechniquesDynamic Analysis Performing Dynamic Analysis based on the following procedures using Abaqus/Ansys▪ Rigid body motion analysis▪ Modal Analysis▪ Modal Response Analysis ▪ Nonlinear Dynamic Analysis ▪ Explicit

Experience :

Blast Analysis, Seismic Analysis, Pipeline Walking Analysis, Impact Analysis, Dropped Object Study, Pipeline Stability, Pipelay Simulation

Dynamic analysis of a connected buoyancy tanks with a special joint between

FE TechniquesMaterial Plasticity ModellingApplied Plasticity Models:

▪ Isotropic Hardening

▪ Kinematic Hardening

▪ Combined (Isotropic and

Kinematic Hardening)

Experience :

Any Failure Assessment, Buckle Arrestor Installation Analysis, Material Strength Test Simulation, Cyclic Analysis that Involves Yielding

Uniaxial Test Simulation to adopt material properties

FE TechniquesComposite MaterialsModelling Composite materials:▪ Calculating Composite material properties using

Micromechanics (RVE)▪ Modelling multiply composite materials in

Abaqus/Patran with LSS or stiffenss matrices▪ Performing dynamic and buckling Analysis▪ Failure analysis using Tsai-Wu Criterion▪ Viscoelasticity (creep)▪ Discrete Damage Mechanics and Delamination

Experience :

Blades in wind turbines (multiply fiber epoxy bonded)

FE TechniquesFracture MechanicsECA and Crack Propagation:▪ Crack Propagation Study due

to fatigue or strength failure

▪ Engineering Crteria Assessmnet for the Pipelines

▪ Fracture toughness and J-integral determintion using traditional method , eXtended Finite Element Method (XFEM) , VCCT

▪ Sharp Crack and Blunt Crack Modelling

Experience :

Pipeline ECA, Crack Propagation Assessment (Strength), Crack Propagation Assessment (Fatigue)

Double cantilever test, fibre reinforced plastic using VCCT method

FE TechniquesMaterial Damage/Failure Modelling (Metals)The following damage criteria were applied when a discontiniuty and failure was intended to be simulated:

▪ Ductile Damage

▪ Shear Damage

▪ FLD Damage (Principal Strain)

Experience :

Ship Impact, Blast Analysis, Dropped Object Study, Punching Test Simulation

From Abaqus , couldn’t put my models

FE TechniquesMaterial Damage/Failure Modelling in ConcreteConcrete Modelling:

▪ Damage Plasticity

▪ Smeared Cracking

Experience :

Concrete Test Simulation, Concrete Column Modelling , Concrete Coated Pipe Failure Analysis

Concrete Beam Test with the T section under cyclic load

FE TechniquesGeotech Simulations

Modelling Soil Behavioure:

▪ Pore Pressure

(Saturated/Unsaturated )

▪ Settlement

▪ Failure Analaysis

(Mohr-Columb)

Experience :

Pile-Soil Interaction, Foundation Settlement (Saturated\Unsaturated)

Consolidation Simulation for saturated soil

FE TechniquesBuckling Analysis

Buckling Analysis as part of structural Integrity Assessment:

▪ Eigen Value Analysis

▪ Nonlinear Analysis with

(buckling modes as

imperfection)

Experience :

Buckling Analysis of Structures

Steel Structure Integrity Assessment

FE TechniquesFatigue Assessment

Fatigue Life Assessment:

▪ High Cycle▫ Determnistic

▫ Spectral

▪ Rainflow Calculations

▪ Low Cycle

Experience :

Fatigue in Pipeline Buckling, Pipeline spans, Offshore Structures, Ships

SCF Determination

FE TechniquesThermal Analysis

Thermal Analyses:▪ Steady State ▪ Transient Analysis▪ Coupled Thermal-Electrical

Analysis

Experience :

Welding Simulation, Coupled thermal-electrical analysis in Memory-Shape Alloys, Flange leak analysis

Welding Simulation

FE TechniquesPost Processing:

Post-Processig is as essential as the analysis itself:

▪ Stress/Strain linirization

▪ Optimazation

▪ Design of Experience (DOE)

▪ Parametric Study

Experience :

Shape optimization to maximize the fatigue life, Determining failure surface for structural joints, Pressure Vessels Integrity Checks , Material Model Adaption

FE TechniquesOthers…

Other Techniques:▪ Complex Contact Simulations ▪ Submodelling▪ Substructuring

Experience :

Pipeline-Seabed Analysis, Spool Analysis, Structural Integrity Assessments

FE RELATED ROLES

▪ Part of a global forum to prepare best practices

▪ Local Help desk

▪ Actively involved in teaching FEA techniques to the

other colleagues

▪ Verification\Validation of models in world-class

projects

TRAINING

Always Commited to be updated, most recent training courses:

▪ Composite Analysis (NAFEMS)

▪ CFD for Structural Engineers (NAFEMS)

▪ Fatigue and Fracture Analysis (NAFEMS)

▪ Dynamic Analaysis (NAFEMS)

▪ Using Python for Abaqus (Simulia)

Thanks!You can find me at:

a.mnasr@gmail.com

https://twitter.com/ArashNasrWork