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Material model 58 on LS Dyna

Submitted by konanur on

I am trying to use material model 58 of ls dyna to simulate a drop tower test on a carbon fibre epoxy composite. However i am getting poor simulation results with very high eroded internal energy values for composite.  My parameters are as follows

 

Hollow composite cylinder (with quad shell elements) of thickness 5mm with a mass of about 120g.

Impactor of weight 82 kg with impact vel of 6 m/s (direction along the longitudinal of composite cylinder)

material model in ls dyna : MAT 58

Delaminated Composite Plate

Submitted by e.turan on
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 Hi,

 I am researching delaminated composite plates.

 How can i model the delamination area in two plies, is abaqus a correct choice for modelling?

 Delamination area is rectangular or circular.

 Regards.

 

Multi time scale simulations for wear prediction in micro-gears

Submitted by vh on

Reliability of micro-gears is known to be adversely affected by wear. In this work we report a strategy to predict local wear with the aim of predicting their effective life span. For the prediction of local wear we start from the relevant model experiments, choice of a suitable wear model and identification of the wear coefficient from these experiments. This wear model is then implemented in an efficient finite element based scheme to predict local wear.

Journal Club Theme of October 2009: Peridynamics applied to the structure and evolution of discontinuities

Submitted by Stewart.A.Silling on
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Discontinuities have a fundamental role in the mechanics of solids. The most famous type of discontinuity is a crack, but others are important too, such as dislocations and phase boundaries. Many types of deformation that appear to be continuous at the macroscale, such as plastic flow in metals, really involve the evolution of discontinuities at some smaller scale.