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Micromechanics Simulation Challenge

Submitted by Wenbin Yu on

cdmHUB has completed the level I micromechanics simulation challenge. Several micromechanics methods/tools including both commercially available tools such as  Altair MDS, ESI VPS, Digimat, SwiftComp and research codes such as MAC/GMC/HFGMC and FVDAM, are used to analyze six typical 2D/3D microstructures. All the results and model files, inputs and outputs, and the report are hosted on cdmHUB as a live project at https://cdmhub.org/projects/mmsimulationchalleng/.

How can I avoid stress concentration at fixed support

Submitted by Echeban on

I have a cantilever beam, 8 in long, rectangular cross section W=0.75 in, H=1.5 in, E=29 msi, Poisson's=0.3, under uniform line load qy = -50 lbf/in (y direction) entire length, bending around strong axis (zz). Beam theory solution M*c/I gives max. stress = 5687 psi.

I model with ANSYS Workbench, uniform mesh Ex-3-6-3D-Normal-Stress.PNG attached.

If I refine the mesh I only get more and more stress concentration. Expected but how to avoid? I just want to get the same result as M*c/I to show how FEA can predict the same as beam theory. 

Call for Papers - Optimization for Integrated Computational Materials Engineering (ICME)

Submitted by a12najafi on

The AIAA (American Institute of Aeronautics and Astronautics) Multidisciplinary Design Optimization Technical Committee (MDO TC) is very pleased to announce a call for papers to be presented in a series of special sessions on Integrated Computational Materials Engineering (ICME) within the AIAA SciTech conference. To this end, the MDO TC is soliciting papers with recent research, technological advancements, and systems level perspectives that address issues/challenges involved utilization of computational methods in optimization and design over multiple length scales from “processing”

Call for Papers-Integrated Computational Materials Engineering (ICME) for Structures

Submitted by a12najafi on

The AIAA (American Institute of Aeronautics and Astronautics) Structures Technical Committee (STC) is very pleased to announce a call for papers to be presented in a series of special sessions on Integrated Computational Materials Engineering (ICME) within the AIAA SciTech conference. To this end, the STC Technical Committee is soliciting papers with recent research, technological advancements, and systems level perspectives that address issues/challenges involved in the integration of computational materials models and design/structures over multiple length scales from “processing” to

The Mechanical Theory of Heat, by Rudolf Clausius, edited by Thomas Archer Hirst, 1867

Submitted by Zhigang Suo on

This book collects English translations of nine papers, published in journals by Clausius, between 1850 and 1865.  This collection of original papers should not be confused with a later book of the same title, also by Clausius, where he worked his original papers into a textbook.

Graphene and Carbon Nanotubes are self-stressed

Submitted by Antonino Favata on

In the attached paper we have shown that graphene and carbon nanotubes are in a self-stress state in their natural equilibrium state, that is, the state prior to the application of external loads. We have identified different sources of self-stresses and accurately evaluated them; we have shown that they are by no means negligible with respect to load-related nanostresses.

Postdoc Position on Elastic/Acoustic Metamaterials at University of Missouri

Submitted by Guoliang Huang on

Composite Materials & Dynamics Laboratory at University of Missouri, Columbia develops innovative solutions for acoustic/elastic wave control, smart materials, and structural health monitoring. We seek exceptional postdoc scientists to work closely with our research group on exciting research in multifunctional metamaterials for manipulating acoustic/elastic wave propagation, structural health monitoring and sensor applications.

 

Essential Duties:

As a member of a world-class research team, she/he will: