Structure Window in Quad View A Quad View of a structure model consists of four Views (X View, Y View, Z View & 3D View). The Quad View is obtained by double-clicking on a single View. Double-clicking on one of the single Views in a Quad View will display only that View..

Only the commands for a VT-620  Visual ODS Package are documented in this chapter. Additional commands authorized by ME'scope Options are documented in separate chapters.
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This chapter contains descriptions of the basic commands in the Structure window. The Structure window is used for;

• Drawing a 3D structure model.

• Animating shape data on the model.

• Executing commands for the SDM SDM is an acronym for Structural Dynamics Modification. SDM is an algorithm that uses the modes of an unmodified structure together with FEA Objects that model structural modifications, and calculates the modes of the modified structure. SDM is very fast and provides useful results even when a modal model has only a few modes in it., Experimental FEA FEA is an acronym for Finite Element Analysis. FEA involves creating an FEA model by adding FEA elements (called FEA Objects in ME'scope) to a structure model. The FEA model can be solved for its FEA modes, and also used for other analyses in ME'scope., and FEA Model Updating options.

Drawing & Animation States

The Structure window has two states, Draw & Animate.  In the Draw state, you can interactively draw and modify a 3D model of the test article. In the Animate state, shapes from the current Animation Source Any Data Block, Shape Table, or Acquisition window that is open in the Work Area is an Animation Source. The currently connected Animation Source is displayed in the Animation Source list on the Toolbar in the Structure window. During animation, data from each M# in the current Animation Source is animated using the Animation equations for each Point on the structure model. are displayed in animation on the 3D model.

• In the Draw state, the Draw menu is enabled.

• In the Animate state, the Animate menu is enabled.

Animation Sources

• Any Data Block (BLK), Shape A Shape consists of two or more measured or calculated values at Poitn & directions on a structure or acoustic surface. Specific types of shapes are an Operating Deflection Shape (ODS), mode shape, acoustic shape, and Engineering Data Shape (EDS). Shape components can be Translational, Rotational, or Scalar. For correct shape animation, all shape components must have correct magnitude & phase values relative to one another. Table (SHP), or Acquisition window (ACQ) is an Animation Source.

• All Animation Sources are listed in a drop down list on the Structure window Toolbar.

Graphics Area & Objects Spreadsheet

The Structure window contains a graphics area on the left and an Objects spreadsheet on the right, separated by a vertical blue splitter bar.

• Drag the blue splitter bar horizontally in the window to make the graphics area or the Objects spreadsheet larger.

• The graphics area on the left contains a 3D model of the structure.

• The Objects spreadsheet on the right lists the properties of all of the Objects of the current Object type.

Menu Commands

Menu command descriptions in this chapter are ordered by command menu (from left to right), and then by the commands in each menu (from top to bottom).

• Each menu command is executed by choosing it from its command menu, or by clicking on its Tool if it is on a Toolbar.

• See the Command Toolbars section in the Introduction to ME'scope chapter for details on customizing the Toolbars in this window.