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ST-7 Finite Element Model, Dynamic Analysis Process, and Assignment

by Kjetil Espedokken — last modified Mar 06, 2011 07:41 PM

Extending defined structural analysis model to the finite element model, extending the defined structural analysis concepts to include dynamic analysis, assigning structural analysis results to structural analysis model.


Business needs:
First, Finite Element Model (Discrete Model) is the core model behind all structural analysis numerical techniques which are supported by various structural analysis software packages. Based on that model software input and output are configured. Second, Dynamic Analysis Process is mandatory for a complete structural analysis. Third, finite element model enables detection of structural analysis results in a detailed manner; consequently, there is a need for assigning analysis results to such discrete model. In particular this project will provide the following features and benefits:
  • The definition of finite element model from structural analysis model (Mechanical Model) that is defined in ST-4 project (this is called Mechanical Finite Element Model).
  • The definition of finite element model from architectural model (Physical Model) that is defined in IFC architecture domain (this is called Physical Finite Element Model).
  • Definition of Finite Element Model (FEM) in IFC data model is intended to serve the following business cases:
    • Structural design of a building is done by Structural Consultant-A and being revised by Structural Consultant-B. The lack of interoperability in FEM software packages between consultant A and B (they usually are in different countries in case of international projects) causes significant delay in project schedule (Hidden Bottle-Neck). This lack of interoperability may force the reviser consultant to remodel building structure and reanalyze it using its own FEM software package and then start to check structure design. Moreover, in Complex-Building projects there may be more than one structural consultant for each stage, design and revision, which in turn does enlarge time delay. Consequently, Storing FEM model of building structure in IFC format enables transparency in structural analysis and in turn design. It eases the aforementioned design and revision throughout importing/exporting FEM model IFC file(s). Accordingly, any assumptions made by the designer in his model became transparent to the reviser.
    • Interoperability between FEM software packages enables design of an integrated system which has unified core data format. This unification in turn enables FEM software packages to easily plug-in the system and to wrap all the defined concepts in a mature way. This plug-in connectivity in turn enables replacing the up-to-date FEM software package without changing any platform part in the integrated system.
    • It happen that visualization of FEM model geometry and analysis result is being done by special software which functions for visualization of FEM data. In this case importing/exporting FEM model in its IFC file(s) format would greatly ease the post processing of FEM data.
  • The definition of dynamic analysis process including various methods of dynamic analysis.
  • The assignment of structural analysis results to finite element model. This in turn gives detailed analysis information which enhances project inter-domains interaction.
  • Ease access and management for analysis data throughout providing database based on IFC data model structure.
  • Ease check and revision of structural analysis based on revised architecture design.
  • Ease check and revision of structural analysis based on as-fabricated modification by fabricator (in case of steel structures).
  • Ease check and revision of structural analysis based on as-built modification by construction manager.

Solution:
This project is an extension for the structural analysis part of the ST-4 extension project, completed. Consequently, many of the capabilities that already exist will be used to provide the aforementioned new functionalities.

Scope of work:
In Scope:
The scope of this project is to extend structural analysis vision which has been initiated in the ST- 4 extension project. Three extensions have been considered. First is extending the defined structural analysis model (Mechanical Model) to the finite element model (Discrete Model) which is supported by various structural analysis software packages. Second is extending the defined structural analysis concepts to include dynamic analysis process which is needed to complete structural analysis vision. Third is assigning structural analysis results, static and dynamic, to the
structural analysis model. In particular this project supports the following business cases:
  • The definition of finite element model from structural analysis model that is defined in ST-4 extension project (mechanical finite element model).
  • The definition of finite element model from architectural model (physical finite element model).
  • The use of finite element model within various structural analysis software packages.
  • The definition of dynamic analysis process including various methods of dynamic analysis.
  • The assignment of structural analysis results, static and dynamic, to the analysis model. Following are in scope to support the business cases:
    • Finite element model items (including elements, nodes, gauss points) and their interrelationships and intra-relationships with mechanical and physical models.
    • Dynamic actions based on different dynamic analysis methods.
    • Analysis results and their assignment to finite element model items.

Out-of scope:

Project schedule
Project start month/year:
Targeted completion month/year:
Process model:
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Pre integration:
Integration:
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Project team
Participants Chapter Roles Contact email
Supporting Activities
A Plug-in-Enabled Kernel-Based Message Passing Interfaced
Integrated Earthquake Simulation Project.

Form of Support
This activity is supported by Japan Society of Civil Engineering (JSCE) to provide a plug-inenabled (interoperable) integrated earthquake simulation based on IFC data model. It provides required contributed resources throughout development, testing, and implementation.b
Project addresses
Project web site:
Project FTP site:
Project email:
Remarks
**Project leader:
Mohammed Hassanien Serror JP U MHassanienM@ohriki.t.u-tokyo.ac.jp

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