XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX''"> Creating a Layup and an Analysis Model
The individual LM_Plies are used to define the model LM_Layup using the Create LM_Layup Add form. When this form is selected, a spreadsheet for the Layup definition and forms for the relevant tolerances can be accessed. The forms are described on the following pages.
These forms are used to create and maintain the analysis layup. As well as providing tools to modify and redefine the layup, the forms will generate the correct laminate materials and apply the correct properties to the model. If all other operations are complete (i.e., Loads/BC addition), the model is ready for analysis after these forms have been applied.
Create LM_Layup Add Form
Layup Definition Form
The spreadsheet is used to specify which of the previously defined LM_Plies are used in the generation of the model LM_Layup. The form allows the selection and ordering of the required LM_Plies. Manipulation of the LM_Plies within the spreadsheet is used to create different stacking sequences
and layups.
Select the specific LM_Ply from the definitions in the Existing LM_Plies frame The method of application of that LM_Ply to the existing layup is controlled by the LM_Layup Controls. Continue by Adding, Inserting, and Deleting LM_Plies until the LM_Layup is finished.
LM_Plies can be added to the layup at any time to reinforce the model between analyses. The ability to redefine laminates rapidly is one of the key features of the MSC.Laminate Modeler.
The spreadsheet works in two distinct but connected modes. They are called “Expanded” and “Compressed.” In expanded mode, the multiplier column on the spreadsheet is always set equal to 1. This enables you to work at the level of single LM_Plies and the Delete and Replace commands will only act on the single LM_Ply selected. In compressed mode, the Delete and Replace commands can be used to do multiple “single actions” at the same time. For example, if a row is specified as having a multiplier of 10, then a replace instruction will replace all 10 rows with the new LM_Ply. The same is true for delete.
You can switch between the two methods at any time and take advantage of the quicker set up time of the stack building, while still being able to modify the LM_Ply sequence at the single LM_Ply level if required.
| Make current definition a total definition. |
| Make the current definition symmetrical by copying LM_Plies. |
| Make the current definition symmetrical about the bottom LM_Ply. |
| Split the current definition in half. |
| Split the current definition in half as if the current definition is symmetrical about a mid-LM_Ply. |
| Cut data from selected spreadsheet cells. |
| Copy data from selected spreadsheet cells |
| Paste data cut or copied from selected spreadsheet cells |
| Paste mirrored data cut or copied from selected spreadsheet cells |
| Undo the last command for the LM_Layup definition spreadsheet. |
Figure 3‑7 Icons on LM_Layup Create Spreadsheet
Offset Definition Form
Important: | Ignore Offsets is required for analysis preferences like ABAQUS and Patran Advanced FEA which do not allow any offset definition for composite shells. This is not the same as having an offset = 0.0. An offset with a specified value will cause an error as it is interpreted as a set value. |
Select Element Type Form
Tolerance Definition Form
Modify LM_Layup Add Form
As only a single layup is allowed in a single Layup file, the form for layup modification is identical to that for layup creation.
Show LM_Layup Exploded View Form
This capability allows the user to verify the definition and application direction of the plies defined in
a layup.
Show LM_Layup Cross Section Form
This capability allows the user to define cross-section plots of the plies defined in a layup.
Show LM_Layup Element Form
This capability allows the user to verify the resulting layup on individual elements. Visualization capabilities are similar to those provided by the Show Laminate function.
Show LM_Layup Element Info Form
Transform LM_Layup Mirror Form
This capability allows the user to model a repeated unit of a symmetrical model, and mirror as appropriate to generate the full model. For example, only one half of a composite chassis may be modeled prior to mirroring the mesh and layup about the center plane.
Delete LM_Layup Select Form
This form allows the user to delete the single layup defined in the current Layup file.
