LSN02 - Multiscale Metals Modeling Bridge 12 = FEA ISV...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Macroscale ISV Continuum Bridge 1 = Interfacial Energy, Elasticity Atomistics (EAM,MEAM,MD,MS, Nm Bridge 2 = Mobility Bridge 3 = Hardening Rules Bridge 4 = Particle Interactions Bridge 5 = Particle- Void Interactions Void \ Crack Interactions Bridge 11 = FEA ISV Bridge 12 = FEA Dislocation Dynamics (Micro-3D) 100’s Nm Electronics Principles (DFT) Å Crystal Plasticity (ISV + FEA) 10-100 µm Crystal Plasticity (ISV + FEA) µm Crystal Plasticity (ISV + FEA) 100-500µm Bridge 6 = Elastic Moduli Bridge 7 = High Rate Mechanisms Bridge 8 = Dislocation Motion Bridge 9 = Void \ Crack Nucleation Bridge 10 = Void \ Crack Growth Multiscale Metals Modeling
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Multiscale Polymer Composites Macroscale ISV Continuum Bridge 1 = Interfacial Energy, Elasticity Atomistics (EAM,MEAM,MD,MS) Nm Bridge 2 = Mobility Bridge 3 = Hardening Rules Bridge 4 = Particle Interactions Bridge 5 = Particle- Void Interactions Nanoparticle/ crack Interactions Bridge 11 = FEA ISV Bridge 12 = FEA Coarse graining 100’s Nm Electronics Principles (DFT) Å Coarse graining, MD and MC Fracture mechanics (ISV + FEA) Bridge 6 = Elastic Moduli Bridge 7 = High Rate Mechanism s Bridge 8 = Density, T effects Bridge 9 = Bonding, mobility Bridge 10 = Nanoparticle, polymer interactions Micromechanics (ISV and FEA) 100-500µm 10-100 µm
Background image of page 2
crack coalescence Electronics Principles (ab- initial, DFT) Macroscale ISV Continuum Bridge 4 = fiber/paste bonding aggregate/paste bonding Multiscale Concrete Modeling Bridge 1 = Interfacial Energy, Elasticity atomic potentials Atomistics (MD, MC) Nm Bridge 2 = interparticle potentials, contact laws Bridge 3 = bonding strength, effects of water Bridge 5 = fiber- bridging, Bridge 12 = FEA Bridge 32 = FEA Coarse graining, DEM 100’s Nm Å Meshless FEA +DEM) Bridge 6 = Elastic Moduli Bridge 7 = High Rate Mechanism s Bridge 8 = creep,shrin kage Bridge 9 = crack nucleation Bridge 10 =crack growth Micromechanics (FEA,DEM) 1-10mm 0.1-1 mm (FEA, DEM)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
ME4123/6123: Failure of Engineering Materials: Lsn 2: Multiscale Aspects Fem Analysis Idealized Geometry Realistic RVE Geometry Monotonic/Cyclic Loads Crystal Plasticity Experiment Fracture of Silicon Growth of Holes Experiment Uniaxial/torsion Notch Tensile Fatigue Crack Growth Cyclic Plasticity FEM Analysis Torsion/Comp Tension Monotonic/Cyclic Continuum Model Cyclic Plasticity Damage Structural Scale Structural Scale Experiments FEM Model Cohesive Energy Critical Stress Analysis Fracture Interface Debonding Nanoscale Experiment SEM Optical methods ISV Model Void Nucleation FEM Analysis Idealized Geometry Realistic Geometry Microscale Microscale Mesoscale Mesoscale Macroscale ISV Model Void Growth Void/Crack Nucleation Experiment TEM
Background image of page 4
What Can Cause Material Failure in a Product? Improper Material Selection ------------ 38% Fabrication Defects ----------------------- 15% Faulty Heat Treatment ------------------- 15% Mechanical Design Error ---------------- 11% Unforeseen Operating Condition ------ 8% Inadequate Environmental Control ---- 6% Crack of Inspection/Quality Control --- 5% Material Mix-up ----------------------------- 2%
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Microstructure-property Relation To predict & avoid material failure we must understand local failure mechanisms Material structure at different length scales What features do we have?
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 55

LSN02 - Multiscale Metals Modeling Bridge 12 = FEA ISV...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online