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JAcobian interpretation

Submitted by kajalschopra on

 I was just reading about volumetric locking in Dhondt's book (for Thermomechanical analysis) and came across this (funny) question;

 

Now, we say the physical interpreation about Jacobian is change in volume, now if a material is incompressible Jacobian = 1, now this incompressibility is a material property, right?

 

Where is a material parameter attached to Jacobian expression of finite elements (1-d,2-d or 3d finite element)?


Comments on Cauchy's stress theorem

Submitted by Structrual Engineer on

I have been bugged by this question ever since I studied cauchy's stress theory 10 years ago.

In cauchy's analysis of solids, there two popular geometries.

First one is a unit cube used for deriving equations of equilibrium.

And the second one is a tetraheadon used for deriving Cauchy's stress theorem.

In both the cases limit of force equilibrium as solid geometry shrinks to a point is derived.

My question has been, how come limit of force equilibrium at a point inside a solid depenent on the path taken by limiting process.

Job Opening at IBM Microelectronics: Semiconductor Process Integration Engineering Professinal

Submitted by Xiao Hu Liu on

There are several openings for semiconductor process integration at IBM Microelectronics. The reqiured background is quite broad, specifically mechanical engineering background, reliability, failure analysis and modeling with experience in BEOL process and integration. To see more details and to apply online, please click the link below.

https://jobs3.netmedia1.com/cp/job_summary.jsp?job_id=STG-0424220

 

The Haythornthwaite Foundation's Founder's Prize for Graduate Students.

Submitted by Ravi-Chandar on

The Haythornthwaite Foundation's Founder's Prize Applications for the
annual award are due on October 1, 2011.  The Foundation supports
scientific research, primarily research in the field of Theoretical and
Applied Mechanics.  The website, which has additional information,
including the entry rules, is at: http://www.haythornthwaite.org/prize.htm

The American Academy of Mechanics is pleased to announce to doctoral candidates in the field of Mechanics up to two Founder Prizes and Grants to be awarded in autumn 2011, arranged by the Robert M. and Mary Haythornthwaite Foundation.

AFM Imaging of Single Biomolecules and Their Interactions with Small Molecules

Submitted by Kilho Eom on

Single-Molecule Recognition of Biomolecular Interaction via Kelvin Probe Force Microscopy  

Jinsung Park, Jaemoon Yang, Gyudo Lee, Chang Young Lee, Sungsoo Na, Sang Woo Lee, Seungjoo Haam, Yong-Min Huh, Dae Sung Yoon, Kilho Eom*, Taeyun Kwon*

 

Application for 15 PhD grants for foreign students at the University of Padova (Italy)

Submitted by michele.zappal… on

The University of Padova, through the funding of the Fondazione Cassa di Risparmio di Padova e Rovigo,

offers research fellowships for foreign students to attend Doctoral Schools/International Courses. During the 3-year doctoral programme.