Modify FE Elastic / Shear Modulus
Description
This form is used to define elements whose elastic and shear moduli differ from (and over-ride) the default values set when the elements were assigned basic structure properties.
The display shows all members initially drawn in the default color. When the current 'elastic/shear modulus' data is assigned to a member it is drawn in red. When a different set of 'elastic/shear modulus' data from the current has been assigned the member is drawn in yellow.
Outline Procedure
This form may be accessed by selecting the Structure Properties Group Button in the Explorer Navigation Pane. If the required elastic/shear modulus group is already defined then click on the name of the required 'elastic/shear modulus' Active Group Item. If no elastic/shear modulus sets have been defined, or if a new set of elastic/shear modulus is required, then (i) click on the Add button on the Navigation Pane's Toolbar, (ii) select Advanced FE Properties from the drop-down menu and (iii) select Modified Elastic / Shear Modulus from the sub-menu.
There are 2 stages to the process: defining the moduli and assigning them to members. These may be carried out in any order.
To assign a member point to an individual member with the mouse. The assignment controller will add the member to the list of assignments. Many other methods of selection are available in the assignment controller. Multiple selections may be added by boxing in the graphics window.
As elements are selected in the graphics window they will be highlighted in red. Elements already included in other modified moduli sets are shown yellow.
If multiple construction stages have been defined then moduli may be changed between stages as described in 'Section Properties data at Stage'.
Special Mouse Actions
Modified values can be removed from members by setting the Select mode to 'Remove' on the graphics window toolbar.
Form Graphic
Field Help
Name
The initial default name may be edited to identify this modified elastic/shear modulus set. The name will appear for example in the Data Reports printout. In the Explorer Navigation Pane active group item description the name is prepended by a short reference acronym that is automatically generated and cannot be edited.
Elastic Modulus
The elastic modulus of the assigned elements. Overrides the default elastic modulus defined for the general structure property to which the element is assigned.
Shear Modulus
The shear modulus of the assigned elements. Overrides the default elastic modulus defined for the general structure property to which the element is assigned. Changes with changed Elastic modulus or Poisson's ratio.
Poisson's ratio
The Poisson's ratio of the assigned elements. Changes with changed Shear modulus. Must be greater than 0.0 and less than 1.0.
Assigned Members
List of members to which the current parameters have been applied in the assignment controller.