Blog posts

Postdoc position: Microstructure simulations for a systematic mechanism-based development of thermo-shock resistant materials.

Submitted by ajmal.choudhary on Mon, 07/18/2011 - 11:32

job

simulations

Phase field simulations

compuational mechanics

The Chair of Material and Process Simulation at the University of Bayreuth is inviting applicants for a post-doctoral position available within the project "Microstructure simulations for a systematic mechanism-based development of thermo-shock resistant materials with reduced carbon amount", which is funded by the German Research Foundation (Deutsche Forschungsgemeinschaft) for a period of eight months – with the prospect of prolongation for further two years.

Postdoc position: Graphite dispersion mechanisms in Fe-C-Si alloys

Submitted by ajmal.choudhary on Mon, 07/18/2011 - 11:15

job

simulations

Phase field simulations

compuational mechanics

The Chair of Material and Process Simulation at the University of Bayreuth is inviting applicants for a post-doctoral position available within the project "Mechanisms of graphite dispersion in Fe-C-Si alloys", which is funded by the German Research Foundation (Deutsche Forschungsgemeinschaft) for a period of three years.

PhD position: Multi-scale modelling for further understanding of the faceting and the orientation-dependent growth of Aluminium

Submitted by ajmal.choudhary on Mon, 07/18/2011 - 11:08

The chair of Material- and Process Simulation at the University of Bayreuth is inviting applicants for a PhD position available within the project “Multi-scale modelling for further understanding of the faceting and the orientation-dependent growth of Aluminium nitride bulk crystals in the gas phase” (AIN-Multi-scale modelling) funded by the German Research Foundation (Deutsche Forschungs-gemeinschaft) for a period of three years.

PhD position: Heterogeneous nucleation and microstructure formation in peritectic alloy systems.

Submitted by ajmal.choudhary on Mon, 07/18/2011 - 10:41

job

simulations

Phase field simulations

compuational mechanics

The chair of Material- and Process Simulations at the University of Bayreuth is inviting applicants for a PhD position available within the project “Heterogeneous nucleation and microstructure formation in eritectic alloy systems” funded by the German Research Foundation (Deutsche Forschungs-gemeinschaft) for a period of one year – with the prospect of prolongation for further two years.

Why Rubber is incompressible?

Submitted by Muthukumar M on Mon, 07/18/2011 - 08:54

materials

rubber

Dear All,

Why rubber and like soft materials are incompressible? I do not want any explanation in formula like, volumetric strain is zero or poissons ratio is 0.5 etc. Physically whats happening when we apply compressive load? For example take a gas, when you compress, the density will change. Is there any of the properties are changing?

Thank you,

Muthu Kumar M

***ERROR: Bad Material definition: Zero or negative initial dilatational modulus caused by bad material data. Please check your.

Submitted by Pan on Mon, 07/18/2011 - 02:39

software

problem in VUMAT;abaqus;hypoplastic

Hi,

I'm conducting hypoplastic VUMAT model in abaqus. It always has the following problem.

***ERROR: Bad Material definition in element number 1: zero or negative
initial dilatational modulus caused by bad material data. Please
check your material input and any initial conditions if necessary.

For the single layer,it works well,but this problem will appear for two layers, even if I chose the same parameters.

Hoping anyone who has the same problem or has already settled successfully could give me some advice.

Cohesive Element in ABAQUS

Submitted by manooir on Mon, 07/18/2011 - 02:25

research

ABAQUS Cohesive Elements

Hello,

It is some time that I am struggling for making a physical interperation of the MAXSCRT in ABAQUS and crack initiation.

When the MAXSCRT in ABAQUS in cohesive element is equal to 1, does it mean that the crack has been formed or just it means that irreversible deformation in the element has been formed?

Thank you,