Week 8

Aim:To perform the morphing operation in a given model to get a efficiently reshape both FE and geometric models.

Theory:There are different kinds of morphing available are:

(i)Domain (Box) Morphing:

Domain or Box Morphing is preformed via boxes that are created around a particular part or assembly that the user intends to morph. The movement of the Morphing boxes control points defines the morphing operations on the entities inside the Morph box. This type of Morphing can be applied to both FE and Geometry based models.

(ii)Direct Morphing:

ANSA’s Direct morphing features gives the user the ability to efficiently modify a part locally without having to create Morphing boxes. This method is extremely useful in creating local modifications on single parts. Creation of depressions, surface fitting certain FE part features to new target geometry, moving selected features along the contour of a surface and also the ability to freeze (rigid) elements during the morphing process are some of the direct morphing abilities.

(iii)Parametric Morphing:

The desired morphing actions can be saved as parameters which can be accessed in batch mode. Users can enforce desired shape changes by changing numerical input value for the appropriate parameter. This method of morphing is highly utilized for coupling of the morphing operations to an external optimizer. The scripting capability can be used in conjunction with ANSA’s parametric morphing functionality to deliver faster DOE models.

(iv)Geometry Morphing:

ANSA brings to the CAE world its tool for CAD geometry morphing. This pioneering concept allows the user to utilize the inventory of all the familiar FE morphing functions to perform equivalent operations in a CAD environment on geometric entities.

Morphing Structures – load-bearing systems capable of changing shape across multiple operating conditions to improve performance or enable new functions to the vehicle or body to which it is attached or comprises.

PROCEDURE:Firstly perform Topo in the given model and then convert the length in perimeter in MESH mode in order to make the model more refine.Intially the model seams like as shown below:

Now in morph mode we got to have various options in which we take some of one to do morphing in the BOXES called new under this ortho- geometry will be choosed to make a box the area where morphing has to performed.

Then using BOX MORPHING under this move can be used,model can be extended in all 3 directions wherever it gives more flexibility can be extended.

here it is easily visible that fins are extended in unidirectionly shows the working of morphing.

Here it could be seen that the edges are extended in all 3 directions to have a more steeper edges this is also can be possible via move option enabling all 3 directions.If some boxes needs to get cut in between could be possible by split option in BOXES.

The advantage of split is it directly distinguish the surfaces which helps in extending the surfaces partly in different different directions.

CONCLUSION:The morphing is a skill full technique required an experience but interesting which leads to make actual model more iterative and more disintigerative than the actual CAD and this depends upon the designer's experience and skills.