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Call for abstract: USNC/TAM 2018, Chicago, Jun 4-9 2018

18th US National Congress for Theoretical and Applied Mechanics (USNC/TAM) will be held in Chicago, Illinion, on Jun 4 to 9 2018. USNC/TAM is held every four years. http://sites.northwestern.edu/usnctam2018/

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Call for abstract: USNC/TAM 2018, Chicago, Jun 4-9 2018

18th US National Congress for Theoretical and Applied Mechanics (USNC/TAM) will be held in Chicago, Illinion, on Jun 4 to 9 2018. USNC/TAM is held every four years. http://sites.northwestern.edu/usnctam2018/

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Call for abstract for SPIE 2018 Behavior and Mechanics of Multifunctional Materials and Composites XII conference

SPIE 2018 Behavior and Mechanics of Multifunctional Materials and Composites XII (SSN04) conference will be held in Denver, Colorado, United States on March 4 to 8 2018, as a part of SPIE Smart Structures + Nondestructive Evaluation. 

Topics of interest are broadly grouped into the following categories:

• functional soft materials and structures

• mechanics of smart and multifunctional materials

• modeling and simulation of smart and multifunctional materials

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Post-wrinkle bifurcations in elastic bilayers with modest contrast in modulus

Post-wrinkle bifurcations in elastic bilayers with modest contrast in modulus

Anesia Auguste, Lihua Jin, Zhigang Suo, Ryan C. Hayward

Extreme Mechanics Letters

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Syringe-injectable electronics

Seamless and minimally invasive three-dimensional interpenetration of electronics within artificial or natural structures could allow for continuous monitoring and manipulation of their properties. Flexible electronics provide a means for conforming electronics to non-planar surfaces, yet targeted delivery of flexible electronics to internal regions remains difficult.

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Mechanics of wrinkle/ridge transitions in thin film/substrate systems

Mechanics of wrinkle/ridge transitions in thin film/substrate systems

Lihua Jin, Atsushi Takei,  JohnW.Hutchinson

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Bifurcation Diagrams for the Formation of Wrinkles or Creases in Soft Bilayers

Subject to compression, elastic materials may undergo bifurcation of various kinds. A homogeneous material forms creases, whereas a bilayer consisting of a stiff film and a compliant substrate forms wrinkles. Here, we show several new types of bifurcation behavior for bilayers consisting of films and substrates of comparable elastic moduli. Depending on the ratios of moduli and thicknesses of the two materials, the critical strain for the onset of creases can be either smaller or larger than that for the onset of wrinkles.

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Ridge localizations and networks in thin films compressed by incremental release of large equi-biaxial substrate pre-stretch

Atsushi Takei, Lihua Jin, John W Hutchinson, Hiroyuki Fujita, Ridge localizations and networks in thin films compressed by incremental release of large equi-biaxial substrate pre-stretch, Advanced Materials, 2014, 26 (24): 4061-4067.

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Measuring the elastic modulus of microgels using microdrops

Two microgel particles are encapsulated in a microdrop having a spherical diameter smaller than the
sum of the diameters of the microgels; this causes the microgels to be squeezed together by the oil–water
interface of the drop, in turn, making the drop ellipsoidal in shape. By modeling the force applied to the
microgels by the drop and equating this to the Hertz contact force of their deformation, we are able to
estimate their elastic modulus. By varying the surface tension and shape of the drops, we are able to

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Elementary Engineering Fracture Mechanics by David Broek

I think this book is a good complement to the course Fracture Mechanics ES 247. There are several reasons:

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