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Post doc position at Ecoles des Mines de Douai (FRANCE)

Submitted by PANIERSTEF on
job

 POST-DOC POSITION

Title : Experimental and numerical study
of the composite materials fatigue under multiaxial loadings

The Polymers and Composites Technology & Mechanical Engineering
Department of the Ecole des Mines de Douai (France) is currently offering a
postdoctoral fellow position aiming at studying the behavior of composite
materials under multiaxial loadings.

non linear frequency analysis

Submitted by phrankie81 on
research

Hi,

I'm trying to run a frequency analysis of a composite beam with non-linear properties in Abaqus. Is it possible to make use of the non-linear properties in the frequency analysis. If so how can I do it?

Composite beam in this case refers to a combination of steel and concrete. 

Any detailed contributions will be appreciated.

Thanks

Shot Peen Hardness With Nanoindentation

Submitted by NANOVEA on
industry
nanoindentation
shot peening
The intention of shot peening is ultimately to alter the mechanical properties of a given surface. By hitting the surface with controlled shot the surface will deform plastically. Proper Instrumentation, nanoindentation, will play a vital factor in achieving reliable and intended results.

Basic question regarding composite failure during impact

Submitted by viveknra on
Damage initiation in composites subjected to impact
Hi everyone.. I am doing low velocity impact analysis on graphite/ epoxy
composite plate using abaqus. I have a basic question. During transverse
impact, when does a composite fail? The transverse tensile strength of
my composite is 45 Mpa, transverse compressive strength is 252Mpa,
Longitudinal tensile & compressive strengths are 1520 and 1590 Mpa
respectively. During my analysis, I got the Maximum von mises stress as
2093MPa at the point of impact, but still the failure criterion is not

Nonlinear Material Model using ANSYS

Submitted by riteshparikh on
education
Nonlinear Material Model - ANSYS
I am performing the static analysis on hydraulics component where I am using the nonlinear material properties with multilinear kinematic material model having yield ~150 ksi and ultimate strength ~210 ksi. However I am getting first principal stress as 280 ksi and von Mises(equivalent) stress ~ 240 ksi.

I checked for the directional stresses where I find the stress in axial direction as ~279 ksi.

Whether it is possible to have the stresses above the given material limit (in this case true ultimate strength is 210 ksi).

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