Substructure modal analysis software

Almost all the computational time in the modal analysis is spent in one of the following. Substructure analysis framework for accelerated finite. Substructure modules include models of relatively small regions in a structural system that needs to be modeled in detail. It is demonstrated that commonly used modal analysis techniques alone may. Using substructure in abaqus modified version with voice. Substructure analysis, especially component modal synthesis cms, has been well. For example, one may want to model a link beam with detailed finite element models or even physical specimens while the rest of the structural system can be modeled with frame elements. To save a substructure and its calculation results.

Pdf substructure analysis framework for accelerated finite. It computes the static deflections, reactions, internal element forces, natural frequencies, mode shapes and modal participation factors of two and three dimensional elastic structures using direct stiffness and mass assembly. What is the application of free free modal analysis and constrained modal analysis. Frame3dd static and dynamic structural analysis of 2d. Advanced linear dynamics and substructuring capabilities in abaqus. An overview of impedance and modalbased substructure analysis techniques used in the structural. The software only has basic analysis capabilities but it covers the major ones typically needed. Substructure synthesis methods and their application to. Design meshes for submodel analysis perform solid to solid, shell to shell, and shell to solid submodeling. On substructure synthesis with frf data sciencedirect. This video tutorial shows you how to create substructure in abaqus. M a modal combination program for dynamic analysis of sis. It is computationally efficient and very simple to program. Model reduction techniques for structural dynamic analyses.

The smac 10 modal analysis software developed at sandia was utilized for all the. What is the application of free free modal analysis and. Because modal density for substructures is very low, calculating substructure eigenpairs is. Because there is no need to measure the input forces, it is ideal for testing under actual operating conditions, and in situations where it is difficult or impossible to control an artificial excitation of the structure. Openmodal accelerating the implementation of your ideas. The dynamic behavior of the substructures is described by a set of. Frame3dd is free opensource software for static and dynamic structural analysis of 2d and 3d frames and trusses with elastic and geometric stiffness. Pulse operational modal analysis performs modal analysis by only using the measured time data output of a structure. Working on substructure has the advantage of making analysis results easier and printout preparations faster. A class of model reduction techniques known as component mode synthesis cms, or substructure coupling for dynamic analysis 5, 14, 15, 24. Dynamic substructuring, transmission simulator, modal analysis.

You should start by finding out whether to use submodeling or. Openmodal is a measurement, analysis and visualisation software for structural dynamics analysis. The transformation matrix t defines the substructure modal subspace. Substructure analysis framework for accelerated finite element modeling 6 1 introduction infrastructure asset is the foundation of human society, and essential for sustaining the. The substructure modal damping contributes to the damping matrices for the finite elements associated with a substructure, and it can be used instead of or together with the other substructure damping sources. The damage location and extent of each substructure. The substructure is a part of the structural model on which analysis can be performed.