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A Geometric Perspective on Gimbal Lock in the Apollo program

Submitted by oliver oreilly on

The phenomenon of gimbal lock rose in prominence during the time  of NASA's Apollo program. Inside the inertial measurement unit of the Apollo spacecraft was a stable (inertial) platform about which the spacecraft rotated. The hinged platform was suspended in two gimbals to give it three degrees of freedom. Its role was to give an accurate measure of the spacecraft's orientation. At a particular orientation of the spacecraft, the gimbals became coplanar and control torques became ineffective at stabilizing the platform.

Microstructural origin of resistance–strain hysteresis in carbon nanotube thin film conductors

Submitted by Lihua Jin on

Microstructural origin of resistance–strain hysteresis in carbon nanotube thin film conductors

Lihua Jin, Alex Chortos, Feifei Lian, Eric Pop, Christian Linder, Zhenan Bao and Wei Cai

Proceedings of the National Academy of Sciences of the United States of America

 

Solving Nonlinear PDEs with a priori accuracy using wavelets

Submitted by karelmatous on

We present a numerical method which exploits the biorthogonal interpolating wavelet family, and second-generation wavelets, to solve initial–boundary value problems on finite domains. Our predictor-corrector algorithm constructs a dynamically adaptive computational grid with significant data compression, and provides explicit error control. Error estimates are provided for the wavelet representation of functions, their derivatives, and the nonlinear product of functions.

PhD Opening in Computational Mechanics

Submitted by saintyang628 on

Two PhD positions (research assistants) are available in the Department of Mechanical Engineering within the Purdue School of Engineering and Technology at Indiana University–Purdue University Indianapolis (IUPUI). The full-support position is available for Fall 2018. The projects are focused on conducting computational modeling and simulations of various materials, including atomistic and multiscale simulations.

3D CT to Simulation-Ready Models Workshop, Mar 22nd, UK

Submitted by Simpleware on

From 3D Computed Tomography Images (NSI) to Simulation-Ready Models (Simpleware)

Date/Time: Thursday, March 22, 2018 / 1:30 pm - 5:00 pm

Location: North Star Imaging UK, High Wycombe, UK

Fee: Free-to-attend. Pre-registration is required as places are limited

Who should attend

Postdoc position in cardiovascular modeling and simulation at NTNU, Trondheim, Norway

Submitted by leifh on

One postdoc position within the field of biomechanical modeling/biomedical engineering for the cardiovascular system is available at Department of Structural Engineering at NTNU, Trondheim, Norway.  The position will be organized under the cardiovascular modeling project headed by professor Leif Rune Hellevik in the Biomechanics group.

EML Vol 19 is out

Submitted by K Jimmy Hsia on

EML Vol 19 is out, with 7 papers. It is quite fascinating just to read the titles! There are papers on mech behaviors due to interactions within complex structures such as nanofibers in vesicles (cover), novel structures with hierarchically synchronized deformations, and mechanochemically augmented composites. There are studies of cool materials from twinning phosphorene to single layer borophene. And there are papers on methods (full-volume displacement mapping with dualMRI) and device (triboelectric generator). Can’t wait to read the content!

 

4th International Conference on BioTribology (ICoBT2018): Invited speakers announced

Submitted by MMcA2 on

We are pleased to announce the invited speakers for the 4th International Conference on BioTribology (ICoBT 2018), which will take place 26-29 September 2018 in Montreal, Canada.

 

The aim of the ICoBT meetings is to bring together researchers from across the scientific, clinical and engineering spectrum, to promote communication across the different disciplines and to provide a platform for the presentation of new work in one meeting focused solely on Biotribology.

 

Seminar: BioEM Simulations for Medical Diagnosis and Treatment, March 21st

Submitted by Simpleware on

National Physical Laboratory, Teddington, UK

The interaction between electromagnetic fields (EM) and the human body are being exploited in clinical and biomedical applications. Electromagnetic medical devices are used for diagnosis as well therapy. This NAFEMS seminar brings together EM software communities to discuss the topic of bio electromagnetics; current trends in EM simulation, exposure to EM fields, and applications of EM field for both therapy and detection.

Simpleware at BioEM - attend the Simpleware Presentation