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# w-2c-clip-parts

By Allen Bryant,2014-01-06 19:19
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w-2c-clip-parts

Workshop 2c

Creating Parts: Clip and Plate Model

Goals

; Create a deformable part using advanced sketching and feature-based modeling

; Create a rigid part of revolution

Introduction

This is the first of a series of optional workshops in which you will use Abaqus/CAE to

1. Such clip and plate model the clip and plate assembly illustrated in Figure W2c

systems are typically used to fasten a piece of trim to the metallic frame of a car body. The objective of the analysis is to determine the insertion force required to fasten the parts together. In this workshop you will begin the design of the clip and plate model by creating the individual parts.

clip

plate

Figure W2c1. Physical clip and plate assembly (left) and

discretized finite element model (right)

The model is simplified by omitting the pad and taking advantage of symmetry. Contact between the clip and the pad occurs after the clip has been inserted into the plate, so removing the pad from the analysis will not influence the clip insertion force. The pad thickness is accounted for in the plate geometry by increasing its thickness appropriately. It is only necessary to model one quarter of the assembly due to the existence of two symmetry planes.

? Dassault Systèmes, 2008 Introduction to Abaqus/CAE

W2c.2

Creating the plate

First you will create the rigid plate.

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

directory by entering the following command at the prompt:

abaqus cae.

2. Create a three-dimensional, analytical rigid part, named Plate. The base feature

for the plate is a revolved shell, with an approximate size of 20 mm. Sketch the

cross-section of the rigid plate as shown in Figure W2c2.

Figure W2c2. Sketch of plate cross-section (dimensions in mm)

3. Define the rigid surface reference point at (3, 1).

Creating the clip

You will now define the clip geometry.

1. Create a three-dimensional, deformable part, named Clip. The base feature for

the clip is a solid extrusion, with an approximate size of 20 mm. Sketch the

profile of the clip's leg as shown in Figure W2c3. Extrude the leg 0.5 mm.

? Dassault Systèmes, 2008 Introduction to Abaqus/CAE

W2c.3

B (1, 5.5)

Auto-offset the

curves by 0.5 to

complete the sketch Sketch this first

A (1, 0.5)

Figure W2c3. Sketches of the clip leg: suggested

geometry (top) and final sketch (bottom)

? Dassault Systèmes, 2008 Introduction to Abaqus/CAE

W2c.4 2. Round the edges of the extruded leg as shown in Figure W2c4. Note that this

operation is performed in the Part module.

Figure W2c4. Clip leg

3. Extrude the head of the clip from the top plane of the clip leg. Sketch the clip

head as shown in Figure W2c5. The extrusion depth is 0.5 mm. The final part is

shown in Figure W2c6.

Tip: Project reference Tip: Use auto-trim tool onto sketch plane to remove excess lines

Figure W2c5. Sketch of the clip head

? Dassault Systèmes, 2008 Introduction to Abaqus/CAE

W2c.5

Figure W2c6. Final part

4. Save your model database as clip_and_plate.cae.

? Dassault Systèmes, 2008 Introduction to Abaqus/CAE

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