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A simplified model for railway catenary wire dynamics

Submitted by Flavio Stochino on

In this paper, a simplified analytic model for the dynamic behaviour of railway catenary wire is presented. The model is discussed and validated with the help of numerical results obtained by a finite element code, for the case of a typical Italian railway installation. The simplified model is convenient from the computational point of view and is useful for sensitivity analysis. Some parametric studies have been developed by considering as free parameters the velocity and the distance of the train pantographs and looking at their effect on catenary dynamics.

Google Maps/Earth Computer Graphics Algorithms for Model Reduction in Mechanics of Materials

Submitted by karelmatous on

We present an innovative image-based modeling technique, based on Google Earth like algorithms, to effectively resolve intricate material morphology and address the computational complexity associated with heterogeneous materials. This sharp volumetric billboard algorithm stems from a volumetric billboard method, a multi-resolution modeling strategy in computer graphics. In this work, we enhance volumetric billboards through a sharpening filter to reconstruct the statistical information of heterogeneous systems.

PhD Positions in Polymer Composites (Mechanical Engineering at University of Maine)

Submitted by Masoud Rais-Rohani on

There are two open positions starting in the fall of 2017 for PhD students interested in analysis and design optimization of polymer composite materials and structures subject to impact and shock loading conditions. A master's degree in Mechanical Engineering or a closely related field is required. Students will have an opportunity to work closely with the faculty in mechical engineering and researchers at Advanced Structures and Composites Center at UMaine.

 

The positions are restricted to individuals with US citizenship or permanent residency.

MRC - Bruno Boley 90th Anniversary Issue

Submitted by Laure Ballu on

In memory of Prof. Bruno Boley, Founding Editor-in-Chief of Mechanics Research Communications (MRC), we made the Special Issue, published in MRC in September 2015, freely available until 13 June 2017.

To read it, go to http://www.sciencedirect.com/science/journal/00936413/68

 

Textbook on Modeling Nonlinear Problems in the Mechanics of Strings and Rods

Submitted by oliver oreilly on

My latest textbook, O. M. O’Reilly, Modeling Nonlinear Problems in the Mechanics of Strings and Rods, has just been published by Springer Verlag. The electronic version of this book is available (for free if your university's library has a subscription) on this website:

 

http://www.springer.com/us/book/9783319505961

 

Compressible, Dense, Three-Dimensional Holey Graphene Monolithic Architecture

Submitted by Shuze Zhu on

We demonstrated outstanding compressibility of holey graphene nanosheets, which is impossible for pristine graphene. Holey graphene powder can be easily compressed into dense and strong monoliths with different shapes at room temperature without using any solvents or binders. 

ACS Nano, Article ASAP, http://pubs.acs.org/doi/abs/10.1021/acsnano.7b00227