Yuli Chen's blog

The performances of graphene sheet in micro- and nano-electronics and devices are significantly affected by its morphology, which depends on the surface features of the supporting substrate. The substrates with non-developable convex or concave surface are widely used with graphene sheet in applications but rarely studied. Therefore, theoretical models are established based on energy analysis to explain the adhesion mechanisms and predict the morphology of the monolayer graphene sheet on non-developable surface.

http://dx.doi.org/10.1016/j.jmps.2015.11.008  Metallic thin-walled round tubes are widely used as energy absorption elements.  However, lateral splash of the round tubes under impact loadings reduces the energy absorption efficiency and may cause secondary damages.  Therefore, it is necessary to assemble and fasten round tubes together by boundary constraints and/or fasteners between tubes, which increases the time and labor cost and affects the mechanical performance of round tubes.  In an

http://dx.doi.org/10.1016/j.jmps.2015.07.016

Composites reinforced by thinner fibers are intensively studied in recent years and expected to have better
mechanical properties. With development of nanotechnology, the diameter of fiber can be as thin as
several nanometers, such as nanofibers and nanotubes. Then, do these thinner fibers definitely result in
composites with better mechanical properties? In this paper, the toughening effect of reinforcing fibers in
composites is investigated based on the three-level failure analysis model. It is found that thinner

The 22nd International Workshop on Computational Mechanics of Materials will be held at the Sheraton Inner Harbor Hotel, Baltimore, Maryland, USA on September 24-26, 2012. You can find information on the conference at http://iwcmm22.jhu.edu/. Please submit your abstracts at http://iwcmm22.jhu.edu/ at your earliest convenience. The deadline for abstract submission is June 15, 2012.

Chair

Somnath Ghosh

Co-chair

Siegfried Schmauder

Hierarchical analysis of the fracture toughness enhancement of carbon nanotube- (CNT-) reinforced hard matrix composites is carried out on the basis of shear-lag theory and facture mechanics.