Week - 8 - Morphing

Aim:

• To perform morphing for the given component and to increase the Height of the Dog houses and Ribs

Introduction:

• ANSA encompasses a full-fledged Morphing menu that is completely integrated with ANSA's interface and doesn't require any additional module installations or licenses. The functions of the Morphing menu can be used to efficiently re-shape both FE and/or Geometry-based models. In Morphing there are various techniques included,

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

Parametric Morphing

• The desired morphing actions can be saved as parameters that can be accessed in batch mode. Users can enforce desired shape changes by changing the numerical input value for the appropriate parameter. This method of morphing is highly utilized for coupling 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.

Geometry Morphing

• ANSA brings to the CAE world its – of – kind’ 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.

Domain (Box) Morphing

• Domain or Box Morphing is performed 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. The morphing has done on a certain area and shown in the below figure,

Morphing for the handrest subsystem:

• Open the file, follow the steps ANSA>Give Command Arguments>OK (Ctrl+O)
• After opening check for the topology of the model to proceed with the morphing. In order to check the Topology follow the process as Tools >Checks >Geometry >Execute
• Once executed, it might show a green bar stating there are no errors in the geometry or it may show the dialog box showing the errors present in it. These errors can be fixed either by going on with them individually or once Right-clicked on the mouse an additional list pops- up
• Fix option will be present in that pop-up when it is clicked the errors which can be fixed are executed and it might contain only a few errors that should be fixed manually and if no errors are present then it will show the green bar stating executed. The process is called geometric clean-up. It can be done either completely or part-wise of the parent geometry

• Morphing is done to change the shape of the model. Initially, the morph is needed to be created by New Box Morph Click Morph Deck, In Boxes module>> Click New >> Min-vol >> Select Geometry and Box Type as Ortho >> Select the Entity >> Click OK
• the Box can be split into as many parts as the user needs, In Boxes Modules >> Click Split >> Click Number >> Select an Edge >> Give Number of Splits >> Click OK
• The Number split creates the Number of splits within the box equally, In Boxes modules >> Click Split >> Click User >> select an Edge >> Click OK
• In the above process, the user can create a split at any location, the user selects. The New Box Morph is created
• The shape needs to be changed either by the given dimensions or rather normally. To move the box model, First of all, an LCS is created by right click on the box module In Box Morphing, Click Move >> Select the Edge nodes on the box >> Move the model (That is to change the Shape) >> Click OK. Similarly the all dog houses and ribs were morphed using this technique

Result:

• Thus we performed morphing for the given component and by increase the Height of the Dog houses and Ribs successfully