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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Provide the name of the global results file or output database file; the file extension is optional.
Online-Submodeling with Abaqus
ABAQUS allows general analysis steps to be treated as linear perturbation steps during submodeling, and vice versa. Output Field Output Requests Create. Since the submodel is a separate analysis, submodeling can be used to any number of levels; a submodel can be used as the global model for a subsequent submodel.
The actual im variables are defined in any step as a submodel boundary condition.
Comparison of the Mises stress in the continuum mesh plate perforrm the submodel top and the shell-to-solid coupling analysis bottom. Node number of a real node that is originally located coincident with the phantom node. The time scale cannot be specified in frequency domain analyses or in linear perturbation steps.
Mixing general and linear perturbation steps. If this parameter is not used in a frequency extraction step, the nodes will be assigned to the primary base. The value of the TYPE parameter is ignored when this option is used. Saving the results from the global model. For solid-to-solid and shell-to-shell submodeling specify the individual degrees of freedom perfrm be driven. By default, the global model in the vicinity of the submodel is searched for elements that contain driven nodes; the submodel is then driven by the response of these elements.
Node definitions for the S4R global model. A node can be driven from the global model in some steps and have user-prescribed boundary conditions in other steps.
In the case of a liquid and a gas, no special procedures need be followed; the pressure degrees of freedom couple straightforwardly. If the file extension is omitted and both results and output database files exist, the results file will be used. 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 sumbodeling.
In the solid submodel, kinematic conditions are interpolated sbell the global model at two surfaces of the submodel: Obtaining a solution at a particular point in time using linear perturbation analysis. Set this parameter equal to 1 default or 2. If the file extension is omitted, ABAQUS will correctly choose the extension if only the results file or the ohw database file exists.
The degrees of freedom on the driven nodes of the submodel must exist at the forcing nodes of the global model. Central Time CT — REAL Include this parameter default to define the real in-phase part of the part of the boundary condition.
Run a data check analysis on the submodel. In this problem the joint between a pipe and a plate is analyzed. If the global model is defined in terms of an assembly of part instances or the output database is used to transfer results from the global model to the submodel, the part. In addition, submodeling cannot be used in conjunction with symmetric model generation or symmetric results transfer. For shell-to-shell submodeling the shell thickness generally is not changed between the models.
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Set this parameter equal to the step number in the global analysis for which the values of the driven perfork will be read during this step of the submodel analysis. It is your responsibility to judge that this use of the submodeling feature is reasonable. C3D20R submodel that uses the S4 global model. This is particularly true in the vicinity of the eigenfrequencies of the global model.
The global model for the submodeling analysis is meshed with S4R elements as shown in Figure 1. Shell-to-solid coupling is a feature in Abaqus by which three-dimensional shell meshes can be coupled automatically to three-dimensional solid meshes.
The submodeling capability can be used in the frequency domain by using the direct-solution steady-state dynamics procedure. The dashed line on the shell model is replaced by hlw shaded surfaces of the solid element submodel.
The dimensionality of abaquw submodel must be the same as that of the global model: Reference model with C3D20R elements. Hence, it is possible to sshell the stress concentration in the fillet. The material response defined for the submodel may be different from that defined for the global model. Shell-to-solid coupling model with C3D10 and S4R elements.
It is possible to define the results file output or nodal output to the output database file such that the information is written at different frequencies for different nodes, although that should not be done for nodes involved in the interpolation to define values at a driven node since ABAQUS will take values at the coarsest frequency only.