See “Shell-to-solid submodeling and shell-to-solid coupling of a pipe joint,” Section For example, a static analysis performed in ABAQUS/Standard can drive a. Perform solid-to-solid, shell-to-shell, and shell-to-solid submodeling. Targeted This course is recommended for engineers with experience using Abaqus. script to perform the steps of the method in an automatic manner. Using the Keywords: Abaqus, Ansa, Meta, Submodelling, Multiscale analysis, Polymers .. scales from shells to solids, further constraints must be introduced, increasing the .
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The maximum Mises stresses at the integration points and nodes for the reference solution, submodel, and shell-to-solid coupling analyses are shown in Table 1. The plate is clamped along all edges. When general analysis steps and linear perturbation steps are reinterpreted in the submodel analysis, the global analysis results are treated as defined in Table Specifying the driven nodes does not activate the driven variables: Five degree of freedom shells cannot be used in shell-to-solid jn.
Run a sequentially coupled thermal-stress analysis the global thermal-stress analysis using the same mesh mesh1 as the global heat transfer analysis and the abaquz from the results or output database file for the global heat transfer analysis.
These procedures do not have to be the same for both percorm.
High transverse shear stresses occur only in regions where bending moments vary rapidly; it she,l better not to locate the submodel boundary in such regions. Other boundaries of the submodel may be driven using the displacements of the structural component of the global model via solid-to-solid submodeling.
The scaling parameter is used in the second step.
Online-Submodeling with Abaqus
The global model can contain both solid and shell elements; however, when the shell-to-solid capability is used, all driven nodes must lie within shell elements in the global model. Load module; fluid cavity pressure and generalized plane strain boundary conditions are not supported.
Thus, the response at the boundary of the local region is defined by the solution for the global model. A submodeling analysis consists of: Submodeling allows you to study a local region of a model based on an existing solution from a global model. The local coordinate system should be applied only to the boundary conditions that are intended to override the submodel boundary conditions, since the submodel boundary conditions are always output in the global coordinate directions by the global model.
If boundary conditions are applied to nodes in the interior of an adaptive mesh domain, these nodes will always follow the material. The boundary nodes of the submodel must lie within regions of the global ih where ABAQUS is able to perform spatial interpolation to define the values of the driven variables.
Comparison of out-of-plane displacement in the continuum mesh plate for the submodel top and the shell-to-solid coupling analysis bottom. Optional parameter Optional parameter: New nodes cannot be added submodleing the total set of driven nodes defined for the submodel; this set of driven nodes is a fixed part of the model definition.
First, the closest point on the shell reference surface of the global model is determined. To perform the workshops for this class you will need to have Abaqus 6. Actual magnitude of the variable displacement, velocity, or acceleration, etc.
Therefore, by default the concentrated force will be reduced linearly to zero over the period of the step in a static analysis and immediately in a dynamic analysis.
Thickness of the center zone size around the shell midsurface given in the units of the model. If this magnitude is a rotation, it must be given in radians. Comparison of out-of-plane displacement in the plate for the reference solution top and the shell-to-solid coupling analysis bottom.
Shell-to-solid submodeling and shell-to-solid coupling of a pipe joint
In a shell-to-shell submodel analysis ABAQUS checks whether the driven nodes of the submodel lie sufficiently close to the reference surface of the shell elements in the global model. Each day of the class will begin with a lecture session.
Solid reference model of the pipe-plate joint. If the driven boundary lies at the border between a solid and a shell region, the driven nodes must be moved a small distance away from the solid region see Figure Reference model with C3D20R elements. The acoustic-to-structure submodel analysis solves an uncoupled structural force-displacement problem. If this parameter is omitted, the time variable is not scaled. In shell-to-solid submodeling, the submodel is made up of solid elements and replaces a region where conventional shell elements are used in the global model.
Model Edit Attributes submodel: In this case the input magnitude will be ignored. For details, see Figure In the case of a structure driving a fluid, you must ensure that the degrees of freedom to be driven in the submodel exist among the global model results.
If necessary, use the approach shown in Figure If this parameter is used, any magnitudes given on the data lines are ignored. Acoustic-to-structure submodeling can be used in such problems.