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w-2b-creating-parts-2-shells

By Karen Coleman,2014-01-06 19:19
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w-2b-creating-parts-2-shells

Workshop 2b

Creating Parts Using Constraints and

Dimensions

Skew Plate Model

Goals

; Define and modify constraints and dimensions Introduction

In this workshop you will model a simple skew plate, shown in Figure W2b1. You will

use constraints and dimensions to sketch the part geometry. The plate is 1 m long, 0.4 m

wide, and 0.008 m thick and is skewed at an angle of 30º.

Figure W2b1. Skew plate geometry

Creating the skew plate

In this section you will create the geometry shown in Figure W2b1 using the constraint and dimension tools.

1. Start a new session of Abaqus/CAE from the ../CAE/Workshops/skewPlate

directory by entering the following command at the prompt:

abaqus cae

2. Create a new 3D Deformable Planar Shell part, and name it Plate. Set the

Approximate size to 4 and click Continue.

3. In the Sketcher create an arbitrary rectangle using the Create Lines: Rectangle

tool .

? Dassault Systèmes, 2008 Introduction to Abaqus/CAE

W2b.2 4. Delete all constraints automatically imposed by the sketcher (four perpendicular

constraints and one horizontal constraint).

Tip: In the prompt area, select Constraints as the Scope of the delete operation.

5. Constrain the left and right edges to remain vertical and the bottom and top edges

to be parallel.

6. Dimension the left edge by selecting the line and assign it a value of 0.4 m.

7. Dimension the bottom edge. Select the vertices of the line rather than the line

itself to define a horizontal dimension. Set the horizontal distance between the

vertices to 1.0 m.

Note: If you were to dimension the line itself, you would control only the length

of the line (in whatever orientation it assumes).

8. Dimension the angle between the left and bottom edges. Select the left and bottom

edges in succession, and set the value of the angle to 60?.

9. The final sketch is shown in Figure W2b2.

Figure W2b2. Sketch of the plate geometry

10. In the prompt area, click Done to finish the sketch.

11. Save your file as skew_plate.

The thickness of the plate, 0.008 m, is not shown. If you were to complete this model, you would supply the plate thickness as part of the section properties in the Property module.

? Dassault Systèmes, 2008 Introduction to Abaqus/CAE

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