Wing Kam Liu* and Wei Chen, Northwestern University ... - SAMSI
Wing Kam Liu* and Wei Chen, Northwestern University ... - SAMSI
Wing Kam Liu* and Wei Chen, Northwestern University ... - SAMSI
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Illustrative Example: Two-Scale Elasticity<br />
Dominant Edge Crack<br />
Aluminum Matrix (Usual DOFs)<br />
20% precipitates (Additional DOFs)<br />
Stationary Crack, 5μm× 5 μm,<br />
� ε ε<br />
−1<br />
nom = 20,000 s , nom = 14%<br />
20% Volume fraction of precipitates<br />
Illustration of Design of Materials<br />
Strengthening Mechanisms<br />
(a)Spatial Patterns (Normal Stress)<br />
(b)Magnitudes & Signs (Shear stress)<br />
(c)Curvatures, Nonlocality (Stress couples)<br />
Nanosized<br />
Ω Precipitate<br />
Aluminum<br />
Matrix
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