FEA Finite Element Analysis and its Fundamentals
Posted by Bhaumik Dave on January 2nd, 2013
Finite Element Analysis Process
FEA Finite Element Analysis is based on the fact that an apparent solution to any complicated engineering industry related problems can be solved by subdividing the problem into smaller segments and into more convenient elements.
By using finite type elements we can reduce complicated partial differential equations [able to describe the structural behavioral] into a set of linear equations, which can be solved by application of standard techniques of matrix algebra.
Why FEA is Applied?
Finite Element method is used in various engineering industries: automotive, aerospace, biomedical, chemicals, energy, electronics, geotechnical, manufacturing, and plastics industries often use this analytical method for different analytical purposes.
In addition to regular application of FEA method, this analytical process is also used in deriving solutions for several classical static structural problems as well as the method is used in different diversified industrial process analyzing like heat transfer process, stability, radiation issues, dynamics, and mass transport.
As FEA is the reliable method of selection for optimizing of new designing, evaluating the suitability of existing features and facilities, can predict performance, as well as can suggest new changes for betterment. Nowadays, FEA is also used for forensic investigations and well as for accident reconstruction process.
Different phases of FEA:
FEA method is comprised of different phases. These are
- Pre-processing- In this phase the FEA expert develops FE mesh for dividing the concerned subject geometry into sub domains for mathematical analysis as well as applies material features and boundary conditions.
- Solution- in this phase the plan obtains the leading matrix equations from the FE model and solves accordingly for getting the main quantities.
- Post-processing- During this final phase, the analyst checks the authenticity and reality of the solution, verifies the values related to primary quantities (for example, stresses and displacements), and develops and scrutinizes other related quantities (for example, specialized error indicators and stresses).
Advantages of FEA Method:
The advantages of FEA Finite Element Analysis are manifold and have significant impact of the application.
A new finite element analysis design concept can be created modeled to decide its real- world-behavior under different load conditions, and may therefore be advanced prior to making of the concerned drawings, when real change and modifications are quite costly.
Once a comprehensive CAD model is developed, application of FEA can analyze the said design with details and thus saves time and investment reducing the requirement of making expensive prototypes.
In case of an existing product facing certain field problem, or needs to be improved, can be analyzed/modified/evaluated by FEA process in a cost effective price. In addition, FEA is also applied on affordable computer workstations and in personal systems where professional assistance is available.
FEA Process Limitations:
FEA despite its advantages have certain limitations too. Finite Element Analysis Software and the required hardware require a significant investment. FEA is a complicated tool, but the analyst must be proficient in handling but should have adequate proficiency in mathematics, computer science, etc.
An FEA expert must have his adequate training on the FEM and the detailed FEA package: there is high chance that a new FEA user may not be accurate in rendering authentic output by applying FEA Finite Element Analysis method.
May be you like to read more about : FEA Analysis Services: For Better Designs and Increased Productivity