HOW TO PERFORM SHELL TO SOLID SUBMODELING IN ABAQUS PDF

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 exterior tolerance for a solid-to-solid submodel analysis is indicated by the shaded region in Figure Saving the results from the global model.

Only one type specification can be used per line. The edge of a sliding boundary region will slide submodleing the material. If the distance between the driven nodes and the free surface of the global model falls within the specified tolerance, the solution variables from the global model are extrapolated to the submodel. For details, see Figure The x -displacement at the distributing coupling reference node for the submoedling shell model due to the 10 N load is.

See the detailed flow chart in Figure The temperatures obtained from the results or output database file of the global heat transfer analysis are field variables in this case. The assumptions depend on the geometric formulation used linear or nonlinear perfrm on the procedure combination.

If the geometry of the submodel cut boundary is such that multiple flat surface approximations exist along the normal direction, the values of the isoparametric coordinates of each global model shell element whose distance is smaller than or equal to the user-specified tolerance are compared.

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It is possible to mix general steps and linear perturbation steps in both the ho and the submodel analyses.

ABAQUS will then have the complete solution history including the solution state at the beginning of a step from which a submodel may be driven. For the dynamic cases sub,odeling load is applied gradually over the entire step time by using a smooth-step amplitude curve.

Thus, only one layer of driven nodes lies within the center zone, and only these nodes have all three displacement components driven by the global solution.

Limitations in shell-to-solid submodeling. In the submodel analysis acoustic pressures from the global analysis drive the user-specified structural surface of interest.

Shell global model drives a solid submodel Load module: REAL Include this parameter default to define the real in-phase part of the part of the boundary condition. For example, an element set named top in part instance I-1 of assembly Assembly-1 must be referred to by Assembly In most cases all components of the solution variables displacements, rotations, temperatures, etc. Node definitions for the shell-to-solid coupling model with C3D10 and S4R elements.

The boundary nodes cannot lie in regions of the global model where there are only user elements, substructures, springs, dashpots, etc.

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If slid submodel analysis step time is different from the pedform analysis step time, use the TIMESCALE parameter to adjust the time variable for the driven nodes’ amplitude functions. Specifying the size of the center zone in shell-to-solid submodeling. If the global element set is defined at the assembly level, you may provide the element set name without qualifying it with the assembly name in a submodel analysis.

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By default, nodes in the submodel must lie within a distance calculated by multiplying the average element size in the global model by 0.

Online-Submodeling with Abaqus

The results from the global analysis must be saved at all nodes required for the interpolation of the driven variables to the boundary of the submodel see Figure This is often the case for metal structures in air, building interiors, or for sound propagation from a liquid to air. Model or history data. It is your responsibility to apply such loads to the submodel correctly so that they correspond to the loading of the global model.

Node definitions for the S4 global model. The time scale cannot be specified in frequency domain analyses or in linear perturbation steps.

For shell-to-shell submodeling the shell thickness generally is not changed between the models. Data lines for acoustic-to-structure submodeling Data lines for acoustic-to-structure submodeling: