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Career Advice

Submitted by danton on
Forums
Ask iMechanica

Hi I am seeking career advice. I am 31 and looking forward to working professionally on FEM and computational mechanics. When I finished my Meng Mechanical Engineering back in 2005 I worked at an institute (unpaid) and programmed some codes on discrete element method but shortly found a job in a oil engineering company in their stress analysis department. Unfortunately I was never placed in that department because the company had other needs (I was placed in the Material Department as a senior Material engineer)

Potential energy of a string

Submitted by L2020 on
vibration
string
potential energy

Hi,

I have to use Hamilton pricinple to evaluate the diff. equation of motion of a string. As shown in the figure below, the string is hanged from one end and is free at the other. The flexural stiffness of the string is negligible.

I have a problem with the potential energy of the string! required in the Hamilton principle. Since the flexural stiffness of the string is assumed to be negligible, is there any other term for potential energy? 

 

Summer Job for Students in Europe: International US-European Joint Study of X-Ray Optics Thermomechanical Stability and Control

Submitted by volinsky on
research
finite element
FEM
x-ray
Student summer job
synchrotron

Summer Job for Students in Europe: NSF-sponsored International Research Experience for Students (IRES)

International US-European Joint Study of X-Ray Optics Thermomechanical Stability and Control

 

Crack length in fracture mechanics

Submitted by manooir on
Forums
Ask iMechanica
Free Tags
FEM
LEFM

Hi,

Could please any one knows give me an idea about solving a problem which I face for the ages.

I have modelled a beam with a sharp edge at the corner of a rectangular hole with ABAQUS. I have introduced different crack length and using LEFM, I have made some predictions for the failure load of the beam. Now the predicted load is dependent on the crack length. How can I chooose the right crack length?

Thank you

ASME IMECE2010 Symposium on Multifunctional Material Systems

Submitted by Xi Chen on
conference
asme
Conference
IMECE
Materials Division
Multifunctional Materials

The ASME Multifunctional Materials Technical Committee of the Materials Division is organizing a symposium on Multifunctional Material Systems at IMECE2010 to be held in Vancouver, Canada, during Nov. 12-18, 2010.



Tentative abstract submission deadline: March 1, 2010



Cohesive Zone Models are elasticity

Submitted by Roberto Ballarini on
education
Linear Elasticity is not so bad

I have always, and I believe correctly, considered cohesize/bridging models linear elasticity. This is because whether we apply them to holes or cracks, we are solving the equations of ELASTICITY, with nonlinear boundary conditions along the part(s) of the crack along which a traction-separation law is applied. So the material model is totally elastic. All we did was to augment the elasticity theory with an ad hoc physical condition (inspired by experiments such as Dugdale).

Lecturer (Assistant Professor) in Geotechnics position available at University of Edinburgh, Scotland

Submitted by AsifUsmani on
job

The School of Engineering at University of Edinburgh is seeking to appoint a lecturer with demonstrated research excellence and the capacity to develop academic leadership in his/her
research area. Applications from candidates with a vision for interfacing
between the powerful science and engineering base of the College and industrial
needs, with strengths in interdisciplinary research, theoretical concept
development, and/or experimental research within the broad remit of Engineering
are encouraged to apply. Those with a research interest in Geotechnical
Engineering, Materials, Geo-Environmental Applications or Structures are

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