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Faculty Positions at Piezoelectric Device Laboratory, Ningbo University

Submitted by Ji Wang on

The Piezoelectric Device Laboratory has immediate opennings for recent PhDs.  We are engaged in researchs in piezoeelctric acoustic wave resonators with supports from government and indsutry.  The Laboratory has been grwoing and we would like to have new members to accelerate the pace and expand collaborations with the fast growing piezoelectric acoustic wave device industry in China and other countries.

Material modelling of steel in cyclic behaviour - Abaqus

Submitted by Velmurugan on

Hi friends,

I am studying about cyclic behaviour  of steel-concrete composite column. When i am giving material properties of steel, i have doubt  about Isotrophic Hardening and Kinematic Hardening, which one i have to use to get cyclic behaviour of column.

 Thank You

R.Velmurugan

Stress intensity factor for 3D crack in ansys

Submitted by kirthanlj on

Hello to all the research scholars. Sir, I am a Phd student in computational fracture mechanics. Right now i am stuck with a problem where i am not able analyze SIF (K1, K2, K3) for a 3D crack in ansys. Ansys asks the path for K value and i am choosing 5 nodes along the 2 crack edges for a full crack model and I also went for both global coordinate system and local coordinate system for finding K. Finally when i went to nodal calc and SIF then it is giving only plane stress and plane strain conditions with full or half crack models. But I am not able to get SIF on the crack front as i am not choosing the path along the crack front. It is only giving SIF at the crack tip considering only the area. Am i not correct or does ansys has limitations on this. Please guide me in this.

stepTime VS. totalTime

Submitted by mmoriche on

Hello everyone,

 I have a problem with one user subroutine.

The fact is that, debugging the subroutine I see the totaltime different from the steptime. I am using just one step and the .inp implementation is veryfied with a different user subroutine, so totaltime and steptime should be exactly the same (but they are not...)

 

The value of the total time is around 1e-8 and the value of the steptime is around 1e-55.

 

Could anyone give me a clue?

 

Thanks in advance.

Abaqus CAE

Submitted by adarshchatra on

Hi,

I am analysis for installation of pile in soil (Pile rigid body and Soil Eulerian material)simulation in Abaqus\ CAE. 

I have given reference point on the pile to assign the mass of pile(top portion). (Pile penetrates vertically into the soil)

I have to give centrifugal force to Pile (300 kN), where can I assing the force? (Point of assignment). And how can I give predcribed displacement of Pile (say 10m)