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Because of the increasing need of energy, the plants installed by electricity supply utilities throughout the world are becoming larger and more highly stressed. Thus, the risk of turbogenerator shaft cracking is increasing also. The development and propagation of a crack represents the most common and trivial beginning of integrity losses in engineering structures.

In the last two decades, considerable observational and theoretical work has been devoted to all aspects of earthquake prediction research, for solving fundamental questions concerning the mechanics of fault systems, as well as for answering questions regarding earthquake hazard.The european natural observatory of the Corinth Rift (http://crlab.eu), a very rapidly deforming area (opening strain rate of ~10^-6/yr) where one or more earthquakes with magnitudes above 6 are expected in the coming decades provides a framework in which the mechanics

Hello everyone,

I need to model soil nailing wall in abaqus based on staged construction.( first remove soil to expose the slope then active the nail and then apply shotcrete facing),

i guess its required to assemble; soil deposit(plain strain element)+nail (beam element)+ facing(beam element),

step 1; geostatic step

step 2; remove the soil to create slope

step 3; active nail ()

step 4; active facing

is that right?

any help would be greatly appreciated 

Hello guys,

I need to model  tunnel lining in abaqus 6.10. i'm guessing that its required to ;

1.reduce the modulus E of soil (relaxation) up to 40%- 50% (how can i do that in abaqus????)

2. active the lining (beam element+ assembled, am i right on assembly ?)

3. remove the soil using *MODEL CHANGE, REMOVE

i was wondering how can i model that ?

any help or suggestion greatly appreciated,