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Hello,

I am modeling a plate under three point bending with Abaqus. The plate
is a sandwich structure with aluminum plate (thickness: 5mm), adhesive glue (thickness:
0.02mm) and a kind of foam (thickness: 15mm) bonding together. Their Young’s
modulus is at the order of 100GPa, 1MPa and 100MPa. While in incremental
calculation, the job is always be aborted for not achieving convergence. I just
wonder whether the cause of not achieving convergence should be attributed to
the huge difference in Young’s modulus.

800x600

Hello,

I am modeling a plate under three point bending with Abaqus. The plate
is a sandwich structure with aluminum plate (thickness: 5mm), adhesive glue (thickness:
0.02mm) and a kind of foam (thickness: 15mm) bonding together. Their Young’s
modulus is at the order of 100GPa, 1MPa and 100MPa. While in incremental
calculation, the job is always be aborted for not achieving convergence. I just
wonder whether the cause of not achieving convergence should be attributed to
the huge difference in Young’s modulus.

Hello,

I am working on my master's thesis. I have to find best fitting hyperelastic material model for simple shear test.

My task is to find most proper material model which will fit my laboratory test data. I have conducted the "single lap test" on bricks, using polymer PS.

http://link.springer.com/article/10.1007/s11837-013-0845-3

Hello All,

Currently,I am modeling elasto-plastic buckling of laminated composites. I started with 3 layers (fiber-matrix-fiber) respresenting unit cell of composite. The model is made with material non linearity and incremental approach - Modified Riks Algorithm has been used for buckling analysis. My try would be to get plastic buckling in the model. For this I need to introduce "Element Weakening Method" (EWM) which allows user's choice to assign weak properties or reduced stiffness to the selected elements. Consequently, this helps in propagating damage.

Job Summary:

The postdoctoral research associate is expected to
provide research support within the frame of a multi-year engineering
research project undertaken by faculty from the departments of
Mechanical Engineering and Applied Math and Sciences at Khalifa
University. Limited teaching or other academic duties may be assigned to
the successful candidate under the supervision of the Advisor as
required by the University.

The successful candidate will be

One PhD student position is available at Arizona State University for fall 2014. Research background in at least one of the following areas is preferred.

1. Fatigue, creep, and corrosion analysis of materials

2. Computational mechanics and micromechanics

3. Damage detection for composite materials

Interested candidates please send application documents to yongming.liu [at] asu.edu (yongming[dot]liu[at]asu[dot]edu)

greetings,

Hi Im writting my umat subroutine for my analysis but the problem that i had seen in the message file is "The Rate Of Convergence is very slow. Convergence is judged unlikely." may i know what the problem ontha and how can i solved this problem. your help highly appreciated it.

 thanks alot. 

 Regards, 

Ng TP

(thengpin87 [at] yahoo.com)