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The objective here is to spread out in detail the various fundamental state properties of smithsonite rock (ZnCO₃) for which the most intrinsic quantities remain still unknown. First-principles electronic structure calculations based on the density functional theory with the pseudopotential method were performed using diverse functionals. A number of mechanical quantities were evaluated such as bulk modulus, elastic constants, Young's and shear moduli, and transversal and longitudinal sound velocities (V_S and V_P).

The Beijing Innovation Center for Engineering Science and Advanced Technology (BIC-ESAT) in Peking University (PKU) was founded in 2015 with a generous support from the Municipal Government of Beijing. The center focuses on the development of advanced manufacturing technology and energy and environmental technologies. Four research departments under the center are:
1) Advanced manufacturing and design;
2) Simulation and application of software;
3) Energy technologies;
4) Environmental technologies.

Dear friends

I need "the theory of thin shells" by Novozhilov. As I look for it more and more, I find less and less. Can anyone help me to find that on net?

Thanks in advance

I was recently awarded an ERC grant for which I will be hiring up to five new PhD students with different types of expertise. Actual hiring will take some time, as new researchers are needed at different stages of the project (not all PhD students will start at the beginning of the project). Interested candidates with the following backgrounds and skill sets are encouraged to contact me directly at azadpoor [at] gmail.com

Dear imechanicas,

When composite plates with cutouts are meshed, the mesh scheme around the hole is somehow not in a mapped shape. This means the edges of (for instance a four-node element) in undeformed shape are not in a rectangular format. Therefore, defining the constitutive equations of orthotropic materials might lead to incorrect results.

Does anybody have opinion/experience about this issue?

Any response is appreciated.

Regards

R_N_S_S 

Hello all,

I am using ANSYS classic for structure analysis.I have two load steps and I need to define the element coordinate systems for selected elements ( in 2nd load step) aligned with principal stress directions obtained from 1st load step.

Earlier I did this in workbench and there I was extracting the principal stress vector data for 'elemental mean' (shown in attached figure) and then in 2nd load step creating the local coordinate system using THXY, THYZ and THZX data. Then assigning this local coordinate systems to appropriate elements.