research

hai,

my project is analysis of functionally graded plates for thermal loads using matlab in this regard i need certain basepaper regarding "bending,buckling and vibrational analysis of composite laminates(cross-ply & angle-ply)subjected to only thermal loads(i,e temperature increment) either constant or linear change using different theories as classical laminate plate theory(CLPT),first order shear deformation theory(FSDT) and zeroth-order shear deformation theory(ZSDT)"

Hello everyone,

 I am implementing a uel user subroutine in ABAQUS. This uel is for modeling contact in X-FEM framework. Thus, it's a nonlinear problem and I need to store some solution dependent variables during each iteration. I know I can store SDVs in SVARS. But this vector will update at the end of each step, and not during iterations. Anybody knows about this problem?

 I really appreciate if anybody can help me with this.

    Thanks

    Ehsan 

Hi all,

I am using FEAP 8.2 in my university, and have to write a user material routine, but there is no clear guideline/example about which files to modify for this purpose. Sorry to say, the programmer's manual is very short, and very little detail is there.

The old tutorials/examples based on FEAP (7.x) are no longer helpful because the FEAP 8.2, 8.3 source code has changed considerably (atlease the files in user folder), hence the novice can get mad after trying for many weeks to figure out the way for doing this.

Dear Colleagues,



A summer school on Nonsmooth Contact and Impact Mechanics is organized from September 10 to 14 at Aussois in the French Alpes. The main focus of the school will be on modeling and numerical/simulation  aspects,  and the following topics will be covered:



Algorithms for contact detection in time-stepping numerical methods

Convergence of time-stepping methods

Multiple impacts in multibody systems

Painlevé paradoxes

Waves in chains of balls

Simulating large fiber assemblies such as hair

I am looking for PhD at a reputed university in Mechanical and Aerospace Engineering in areas of specialization such as

1.Design and Manufacturing (Specialty: Adaptive Aircraft Design, Experimental Methods, FEA, Low Reynolds Number Aerodynamics)

2.Energy (Biofuels, Fuel Cells, Nuclear Engineering)

3.Vehicle Dynamics (Automobile Safety, Automotive Powertrains, Impact & Crash-Worthiness, Rotor Dynamics)

4.Thermofluid Systems (Combustion Dynamics,IC Engines, Computational/Fluid Dynamics) 

This paper reports the quantitative measurement of a full spectrum of mechanical properties of fivefold twinned silver (Ag) nanowires (NWs), including Young’s modulus, yield strength, and ultimate tensile strength. In-situ tensile testing of Ag NWs with diameters between 34 and 130 nm was carried out inside a scanning electron microscope (SEM). Young’s modulus, yield strength, and ultimate tensile strength all increased as the NW diameter decreased.

We systematically investigated the interesting electric response of the aligned CNT ribbons under mechanical strain. We found that CNTs slide on a PDMS substrate under tension, but buckle under compression (releasing). Such an irreversible mechanical deformation is responsible for the observed irreversibility in the electric resistance upon the first stretching/releasing.

how to mesh two sucessive volumes with different meshing

i've modeled a column as a volume

i need a closer or finer mesh near the junction of beam

anyone pls guide me on this issue???