Blog posts

A paper by Kubelwa et al. (Statistical Modelling of Bending Stress in ACSR Overhead Transmission Line Conductors subjected to Aeolian Vibrations –I) reports data from vibration tests on 4 ACSR.  under  3 axial loads (20, 25 and 30% UTS). An 84.5 m conductor span is vibrated at various bending amplitudes and strain is measured near a clamped end (distance not given). Clamps are rigid square-faced bushings. Vibration amplitude is measured at 89 mm from bushing. Strain gages are glued on 3 adjacent top layer wires. Through Hooke’s law, mean stress is derived for each amplitude.

This is the first call-for-contributions for the International Workshop-Conference Research Challenges in Mechanics: Applications of Automated Computational Modeling to be held between 01-03 March (2017) in Hannover (Germany).

For more information visit www.rcm2017.uni-hannover.de

            The University of Notre Dame, Center for Shock Wave-processing of Advanced Reactive Materials (C-SWARM), is seeking a highly qualified candidate for the postdoctoral associate position in the area of computational mechanics/physics with emphasis on chemically reactive solids. C-SWARM is center of excellence established by National Nuclear Security Administration (NNSA) whose primary focus is on the emerging field of predictive science.

Shengqiang Cai, of the University of California at San Diego, will be the new editor of the iMechanica Journal Club.  He is an active researcher in the field of soft materials, and has made contributions to the development of theory, experiment, and computation.  He will be principally responsible for selecting the discussion leaders for themes in 2017.

A postdoctoral researcher position is open in the Integrated Design Automation Laboratoryat Northwestern University under the guidance of Prof. Wei Chen.  The postdoctoral researcher will work on systematic computational design methods that provide a seamless integration of design optimization, predictive materials modeling, processing/manufacturing, and data/informatics to enable the accelerated design and development of multiscale materials systems.

Prescribing  Surface Strains to change Gauss curvature

To change Gauss curvature K of a surface we need to strain each differential shell element by virtue of Egregium theorem ( K is invariant if strain is zero in isometry mappings).

Can someone help with a geometrical problem where imposed strains are to be defined (at differential shell element level of a right circular cylinder) to obtain a surface of revolution with Gauss curvature +1 or -1 (sphere or pseudosphere) ? Or their isometric equivalents? Cylindrical coordinates may be used.

Description:  Postdoc position in growth and remodeling in the Nguyen Lab, Department of Mechanical Engineering, The Johns Hopkins University