The finite element method (FEM), or finite element analysis (FEM,is based on the idea of building a complicated object with simple blocks,or, dividing a complicated object into small and manageable pieces,Since the actual problem is replaced with a simpler one is finding the solution.
The existing mathematical tools will not be sufficient to find the exact solution.The existing mathematical tools will not be sufficient to find the exact solution for most of the practical problems.

Thus in the absence of any other convenient method to find even the approximate solution of given problem ,we have to prefer the finite element method.Using this method , it is even possible to improve or refine the approximate solution by using computer of higher processing capabilities.

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1. Inserting component
2. Inserting part
   
3. Unload/load components
4. Replacing components

• Insert a new component
• Insert a new part
  
• Insert a new product
• Insert existing components
• Load components
• Unload components

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1. Split geometry:-Select the element to be split and cutting element .
2. Trim geometry:-select two elements to be trimmed and specify which side of element.
3. Join geometry:-Select at least two curves or surfaces to be joined.
4. Translate geometry:-Select an element , a translation direction direction (line ,plane or vector), specify the translation distance
5. Perform a symmetry:-Select an element ,then a point ,line ,or plane as reference element
6. Transform geometry by scalling:-Select an element ,then a point , plane or planar surface as reference element , and specify the scaling ratio.
7. Transform geometry by affinity:-select an element to be transformed , specify the axis system characteristics , and the enter the affinity ratio values.
8. Rotate geometry:-Select an element , a line as the rotation axis , and specify the rotation angle.

Catia wireframe and surface design allows you to create wireframe construction elements during preliminary design and enrich existing 3D mechanical part design withe wireframe and basic surface features.As a complement to catia part design,this product meets the requirement of solids-based hybrid modeling.

The product shape is managed ,these days using surface modeling techniques,surface models are three dimensional shapes withe no thickness , the various workbenches in catia v5 for surface creation are:-

1. Wireframe and surface design
2. Generative shape design
3. Free style

1. Create an offset plane: select an existing plane,and enter an offset value.
2. Create a parallel plane through a point: select an existing plane and point .The resulting plane is parallel to the reference plane and passes through the point.
3. Create a plane at an angle : select an existing plane and rotation axis ,then enter an angle value
4. Create a plane through three point: select any three point
5. Create a plane through two lines: select two lines
6. Create a plane through a point and line: select any point and line
7. Create a plane through a planer curve : select any planar curve
8. Create a plane normal to a curve: select any curve and point
9. Create a plane based on it's equation: key in the values for the Ax+Bu+Cz=D equation.
10. Create a mean plane through several points: select any three ,or more points

1) Create lines between two points : Select two points

2)Create lines based on a point and direction : Select a point and a line ,then specify the start and end point of the line.

3)Create lines at an angle or normal to a curve : Select a curve and its support, a point on the curve,then speify the angle value ,the start and end points of the line.

4)create lines tangent to a curve : Select a curve and reference point,then specify the start and end point of the line.

5)Create lines normal to a surface : Select a surface and refrence point,then specify the start and end ponits of the line.

6)Create lines normal to a surface : Select a surface and a reference point ,then specify the start and end points of the line.