Y2D Data Structure

In brief, the data of a Y2D input file has the following structure:

Database Functionality Example parameters
Control Data that will control the overall behaviour of the model Number of time steps, time step size, gravitational acceleration (g), output frequency
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Elements Data of the mesh elements and their associated property set numbers Actual & maximum number of elements, Number of nodes per finite elements, set of properties associated with each element
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Interaction Data used for contact detection and interaction Actual & maximum number of contacting couples of finite elements, size of buffer around each finite element
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Nodes Data of the mesh nodes, their coordinates, initial conditions, and associated property set Actual & maximum number of nodes, nodes coordinates, current nodal forces / velocities, ID of a property set associated with each node
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Borehole* Data of boreholes Number of boreholes, borehole dimensions, amplitude factors, velocity of detonation, pressure
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Output History Data of output history points used to record state variables at specific points Number of history variables (i.e. number of points), coordinates of the nodes, output history type
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Properties Data of the property sets of the model including material properties, boundary conditions, and model parameters 1. Material properties such as shear / tensile strength, fracture energy, Lame's constants, friction, density.
2. Boundary conditions such as element surface pressure / traction, force / acceleration / velocity in x- / y-direction.
3. Model parameters such as number of mesh refinements, penalty term, viscous damping.
Type of each property
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*The borehole module is not implemented in Y-GUI V2.0.