Skip to main content

research

Case Studies in Engineering: watch the video

Submitted by Laure Ballu on
research
structural
engineering
construction
Engineering Failure analysis

Whatch our video http://www.youtube.com/watch?v=6FpxQrvpU4g

What are case studies?

Case Studies in Engineering are a series of open access journals, which publish practical outcome of research and indusrty projects in a variety of Engineering disciplines, including: Construction Materials, Fire Safety, Structural Engineering, Engineering Failure Analysis, Mechanical Systems and Signal Processing, Nondestructive Testing Evaluation and Thermal Engineering.

Piezoelectric vibration damping using resonant shunt circuits: an exact solution

Submitted by Payam Soltani on
research
piezoelectric; dynamic absorbers; shunting; Equal peak method

Piezoelectric vibration damping using resonant shunt circuits: an exact solution

By :

Payam Soltani, Gaetan  Kerschen, Gilles  Tondreau and Arnaud Deraemaeker

Abstract

determination of stiffness matrix of transversely isotropic material

Submitted by yzhou on
research
transversely isotropic material

Dear all, I am an applied mathematician and I  have been stucked by the this general question for a while, i.e.,  to determine the stiffness matrix of transversely isotropic material from known strain and stress tensors.  The definition of transversely isotropic tells us that the stiffness matrix can be defined by 5 constants, see attached figure. C44 is easy to determine, so we can focus on the remaining 4 constants. I attempted to establish 4 linear equations for these 4 constants with the known strain and stress components.

Ridge localizations and networks in thin films compressed by incremental release of large equi-biaxial substrate pre-stretch

Submitted by Lihua Jin on
research
mechanical instability

Atsushi Takei, Lihua Jin, John W Hutchinson, Hiroyuki Fujita, Ridge localizations and networks in thin films compressed by incremental release of large equi-biaxial substrate pre-stretch, Advanced Materials, 2014, 26 (24): 4061-4067.

Part II of Professor Christensen's paper on failure mechanics is published in JAM

Submitted by Yonggang Huang on
research

Failure Mechanics—Part II: The Central and Decisive Role

of Graphene in Defining the Elastic and Failure Properties

for all Isotropic Materials

 

Continuing from Part I (Christensen, 2014, “Failure Mechanics—Part I: The Coordination

Between Elasticity Theory and Failure Theory for all Isotropic Materials,” ASME J.

Appl. Mech., 81(8), p. 081001), the relationship between elastic energy and failure specification

is further developed. Part I established the coordination of failure theory with

Multiple PhD/Postdoc Positions/Spring 2015

Submitted by skumaar on
research
Barrier and protective Coatings
Composites
multiscale modeling
sintering
mud-cracking
CNts
CNS composites

Advanced Materials and Multifunctional Structures (AMMS) Group at Masdar Institute (MI) is seeking suitably qualified candidates for PhD/Postdoctoral positions. Please see attached document for details

Extinct Kangaroos Couldn't Hop

Submitted by Lee Margetts on
research
dinosaurs
biomechanics
genetic algorithms
HPC
rigid body kinematics

Another couple of interesting articles to share. Using some "mechanics" principles, researchers have reasoned that 100,000 years ago, kangaroos were too heavy to hop.

A while ago, a different group of researchers published the results of computer modelling (using genetic algorithms) that showed dinosaurs might have hopped and skipped as forms of locomotion! (But only if particularly happy?)

These articles might be good to share with undergraduate engineers for discussion in tutorials. There are issues to discuss with assumptions in both cases. 

Conversion of nanoindentation data into stress-strain curves

Submitted by Pavel Loginov on
Forums
Ask iMechanica
Choose a channel featured in the header of iMechanica
research
Free Tags
nanoindentation

Hello, colleagues! 

Could anybody help me with the problem? How to convert nanoindentation data (force - penetration depth) into stress-strain curves? Is there any method that allows to make such a conversion if Berkovich indenter was used?

 

Thank You!

 

Best regards, 

Loginov Pavel (NUST MISIS engineer)

Subscribe to research