Skip to main content

thin film

A question on ANSYS

Submitted by Qianfeng Wang on
Forums
Ask iMechanica
Choose a channel featured in the header of iMechanica
software
Free Tags
thin film

I want to simulate a thin circular film in xy plane. The force is in z direction. I wanna get the deflecton of the film using ANSYS.

The material is linear, but the deformation is geometrically nonlinear. Also, I consider only stretching behavior, which means that

the bending effect is totally neglected.

Which element I should choose?

 

Thanks in advance!! 

 

Influence of Interfacial Delamination on Channel Cracking of Brittle Thin Films

Submitted by Rui Huang on
research
thin film
flexible electronics
fracture mechanics
interface
R. Huang Group Research
Integrated Structures
channel crack
delamination
microelectronics


H. Mei, Y. Pang, and R. Huang, International Journal of Fracture 148, 331-342 (2007).

Following a previous effort published in MRS Proceedings, we wrote a journal article of the same title, with more numerical results. While the main conclusions stay the same, a few subtle points are noted in this paper.

Permanent position available / thin film and surface mechanics

Submitted by Etienne Barthel on
job
thin film
experimental mechanics
surfaces

Position available / thin film and surface mechanics

“Surface du Verre et Interfaces”, a joint CNRS/Saint-Gobain research laboratory in Paris, is hiring a research scientist to strengthen its activities on thin films mechanics. For more information:

http://www.saint-gobain-recherche.com/svi/en/pages/StaffPositions.htm

Dr Etienne Barthel CNRS/Saint-GobainSurface du Verre et Interfaces BP 135 F-93303 Aubervilliers Cedex France

Need help: Relation between polymer end-to-end distance and mechanical properties

Submitted by Ashfaq Adnan on
research
thin film
Polymer Physics
Adhesive

Hi,

I found in polymer books and some literatures that mechanical properties of polymer improve with the increase of their radius of gyration or end-to-end distance for a fixed molecular weight. I, however, could not find any experimental evidence or any physical explanation. 

It will be a great help to me if anyone refer me some literatures that explains the connection between these two parameters.

 Thanks,

Ashfaq Adnan

Strain Gradient Plasticity

Submitted by Rashid K. Abu Al-Rub on
research
thin film
Plasticity
gradient

Recently, there have been many strain gradient theories that are used for the interpretation of size effect at the micron and submicron length scales. The basic idea of these theories is the introduction of a first, or second (or both) gradients of strain or any internal state variable in the governing equations of classical theories.

Thickness dependent critical strain in Cu films adherent to polymer substrate

Submitted by Rongmei niu on
research
thin film
polymer

For the polymer-supported metal thin films that are finding increasing applications, the critical strain to nucleate microcracks ( εc ) should be more meaningful than the generally measured rupture strain. In this paper, we develop both electrical resistance method and microcrack analyzing method to determine εc of polymer-supported Cu films simply but precisely. Significant thickness dependence has been clearly revealed for εc of the polymer-supported Cu films, i.e., thinner is the film lower is εc . This dependence is suggested to cause by the constraint effect of refining grain size on the dislocation movability.

Stress analysis of adhesive layer in a sandwich specimen

Submitted by Mingji Wang on
thin film
stress

I just came across the lecture notes from Professor Nix on Mechanical Properties of Thin Films. It is very educative and helpful. I wonder if anyone could recommend some analytical derivation on the stress of the adhesive layer between two similar/dissimilar adherends (sandwiched specimen) under mechanical or thermal loading.

Many thanks ...

Subscribe to thin film