Using APIs, you can access Mechanical tree objects. The object representing the project node
        of the tree is DataModel.Project. 
Each object can have children that you access by using the property
            Children. For example, assume that the
            Outline view in Mechanical looks like this:
 
To return all objects directly under the Project node, you enter this:
DataModel.Project.Children
Under the Project node is the Model node. Some examples follow for accessing Model child nodes:
Mesh = Model.Mesh
Connections = Model.Children[3]
To access all objects with a given name, you use the method
            GetObjectsByName:
DataModel.GetObjectsByName("name") 
To access all objects if a given type, you use the method
            GetObjectsByType and pass the data model object category (such as
            DataModelObjectCategory.Force) as an argument:
DataModel.GetObjectsByType(DataModelObjectCategory.Force)