Reusability-based selection of parametric finite element analysis models

2009 ◽  
Vol 23 (2) ◽  
pp. 197-214
Author(s):  
Nsikan Udoyen ◽  
David W. Rosen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Adaptive Reuse ◽  
Element Analysis ◽  
Fea Modeling ◽  
New Information ◽  
Parametric Finite Element Analysis ◽  
Method Factors ◽  
Analysis Models ◽  
Selection Of

AbstractA selection method to support adaptive reuse of parametric finite element analysis (FEA) models is introduced in this paper. Adaptive reuse of engineering artifacts such as FEA models is common in product design, but difficult to automate because of the need to integrate new information. The proposed method factors reusability into selection by evaluating models based on comparative estimates of effort involved in adapting them for reuse to model a query problem. The method is developed for FEA models of component-based designs. FEA modeling of electronic chip packages is used to illustrate the method's usefulness. We conclude with a discussion on the method's advantages and limitations and highlight important issues for further research.

Description Logic Representation of Finite Element Analysis Models for Automated Retrieval

2008 ◽  
Vol 8 (3) ◽  
Author(s):  
Nsikan Udoyen ◽  
David Rosen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Information Needs ◽  
Description Logic ◽  
Retrieval Algorithm ◽  
Element Analysis ◽  
New Information ◽  
Efficient Retrieval ◽  
Parametric Finite Element Analysis ◽  
Analysis Models

Adaptive reuse of archived parametric finite element analysis (FEA) models involves integration of new information into archived models to model similar new problems. Retrieval of relevant archived models and supporting documents from electronic repositories is difficult when a modeler is unable to describe information needs precisely in a query using keywords. The use of description logic (DL) concepts to describe archived models and build expandable classification hierarchies to facilitate retrieval is proposed and illustrated. A domain-independent retrieval algorithm based on the traversal of description logic concept hierarchies is introduced. The usefulness of the approach is asserted by showing that precise classifications of FEA models can be automatically computed from semantically rich representations in a fairly inexpressive DL using subsumption. The usefulness of subsumption hierarchies for efficient retrieval of FEA models illustrates the benefits of DL for their automated management.

Description Logic Representation of Finite Element Analysis Models for Automated Retrieval

2006 ◽  
Author(s):  
Nsikan Udoyen ◽  
David W. Rosen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Information Needs ◽  
Description Logic ◽  
Retrieval Algorithm ◽  
Element Analysis ◽  
Parametric Finite Element Analysis ◽  
Analysis Models ◽  
Logic Inference ◽  
Domain Independent

Adaptive reuse of archived parametric finite element analysis (FEA) models to model similar, new problems is an important part of the process of learning to apply the finite element method to specific domains. Retrieval of relevant archived models and supporting documents from electronic repositories is difficult when a modeler is unable to describe information needs precisely in a query using keywords. The use of description logic concepts to describe archived models and build expandable classification hierarchies to facilitate retrieval is proposed and illustrated. A domain-independent retrieval algorithm based on the traversal of description logic concept hierarchies is introduced. Its usefulness is asserted by: • showing that intent behind FEA models can be represented precisely using a fairly inexpressive description logic; • showing that standard description logic inference supports retrieval of FEA models based on a modelers’ intent.

Linear Thermomechanical Microactuators

1999 ◽  
Author(s):  
Rebecca Cragun ◽  
Larry L. Howell
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Thermal Expansion ◽  
Cross Sections ◽  
Variable Cross ◽  
Element Analysis ◽  
Thermal Actuators ◽  
Output Force ◽  
Analysis Models ◽  
High Output

Abstract Thermomechanical in-plane microactuators (TIMs) have been designed, modeled, fabricated, and tested. TIMs offer an alternative to arrays of smaller thermal actuators to obtain high output forces. The design is easily modified to obtain the desired output force or deflection for specific applications. The operational principle is based on the symmetrical thermal expansion of variable cross sections of the surface micromachined microdevice. Sixteen configurations of TIMs were fabricated of polysilicon. Finite element analysis models were used to predict the deflection and output force for the actuators. Experimental results were also recorded for all sixteen configurations, including deflections and output forces up to 20 micron and 35 dyne.

scholarly journals Optimisation of Coating Properties for Fibre Optic Smart Structures using Finite Element Analysis

1994 ◽  
Vol 3 (5) ◽  
pp. 096369359400300
Author(s):  
M. Hadjiprocopiou ◽  
G.T. Reed ◽  
L. Hollaway ◽  
A.M. Thorne
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optical Fibre ◽  
Smart Material ◽  
Material System ◽  
Careful Selection ◽  
Coating Properties ◽  
Stress Concentrations ◽  
Element Analysis ◽  
Selection Of

Finite Element analysis is used to determine and to minimise the stress concentrations which arise in a “Smart” material system due to the embedded optical fibre sensors. The FE results show that with careful selection of the coating stiffness and thickness the stress concentrations caused by the fibre inclusion in the host material can be reduced.

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