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Training Module #4: HyperX Entities - Joints (Click-Along)

Summary

In this exercise, we will practice setting up and sizing various types of HyperX Joints.

The upper skin will be connected to the spars by fastened, single shear joints. The upper and lower covers will be bonded together using a stepped-lap joint. The preliminary status of this model necessitates sizing with Edge Joints because no discretized connecter or cohesive elements have been modeled.

image1.png

Part 1: Create Edge Joints

Open Database and Project

Path: C:\HyperX\Training\[Version#]\

Database: Training Module #4 - HyperX Entities_[Version#]

Project: 02_Joints

00_OpenDB_Joints.png

Create Edge Joints

Edge Joints are used to represent the connections between panels abstracted along panel boundaries, rather than being modeled explicitly. They are common in earlier design stages of fastened connections, shear-dominated fastened joints, and bonded joints.

Create Edge Joints along the upper skin-to-spar connection

  1. From the Structure tab of the Ribbon, select ‘Create an Edge Joint’.

  2. Select ‘2 Member’ option.

  3. Select all Zone boundaries along the upper skin–spar connection.

  4. Click ‘Create’.

image3.png

Create Edge Joints along the upper skin-to-lower skin connection

  1. From the Structure tab of the Ribbon, select ‘Create an Edge Joint’.

  2. Select ‘1 Member’ option.

  3. Select all Zone boundaries along the upper skin–lower skin connection.

  4. Click ‘Create’.

image4.png

Note

The Upper Skin Structure now contains these Edge Joints.

image5.png

Part 2: Set Up and Size Fastened Joints

Set Up Spar-Skin Joints for Sizing

Just as with Zones, Joints must have a:

Each Property was pre-defined in the Database Template so you can find them in the Property Tree. Double-click on any Property to review its definition.

sparSkinPropTree

To assign a Property to a Joint:

  1. Use the Viewport to select the Joint(s).

  2. Drag the desired Property from the Property Tree onto the selected Joint.

    Note

    The color of the selected Joint will flash to confirm that the Properties were successfully assigned.

  3. Repeat for each Property to fully define the Joint.

assignSparSkinProps

Review Spar-Skin Joint Sizing Properties

By double-clicking on a Property in the Property Tree, you will open its definition form where you can review its details. Let's review the Properties we assigned in the last step to understand their impact on Sizing.

image8.png
image9.png

Note

Confirm the settings in the Design Property match those in the image above before moving on.

reviewLoadAndAnalysisProp

Size Fastened Joints

Just like with Zones, Joints are Sized by:

  1. Selecting the desired Edge Joints.

  2. Clicking ‘Size’.

image11.png

Review Fastened Joints Sizing Results

Open the Legend to begin viewing results.

Note

All of the same Analysis Results available for Zones can be plotted for Joints.

Optional: Select ‘By Joint’ in the plot selection options to only see Joint results.

image12.png

Use the Legend to navigate through the various data that can be plotted for Bolted Joints. Some results shown below:

image13.png

Tip

Analyzing the results in the Legend helps to inform the design of higher fidelity models.

Part 3: Set Up and Size Bonded Joints

Set Up Skin-Skin Joints for Sizing

To assign a Property to a Joint:

  1. Use the Viewport to select the Joint(s).

  2. Drag the desired Property from the Property Tree onto the selected Joint.

    Note

    The color of the selected Joint will flash to confirm that the Properties were successfully assigned.

  3. Repeat for each Property to fully define the Joint.

image14.png

Review Skin-Skin Joint Sizing Properties

By double-clicking on a Property in the Property Tree, you will open its definition form where you can review its details. Let's review the Properties we assigned in the last step to understand their impact on Sizing.

image15.png

Note

Confirm the settings in the Design Property match those in the image above before moving on.

bondedLoadAndAnalysisProp

Size Bonded Joints

Just like with Zones, Joints are Sized by:

  1. Selecting the desired Edge Joints.

  2. Clicking ‘Size’.

image17.png

Review Bonded Joint Sizing Results

Open the Legend to begin viewing results.

Note

All of the same Analysis Results available for Zones can be plotted for Joints.

Optional: Select ‘By Joint’ in the plot selection options to only see Joint results.

image18.png

Use the Legend to navigate through the various data that can be plotted for Bonded Joints. Some results shown below:

image19.png

Tip

Think of the adherend material selection as a ‘minimum edgeband thickness’ required for this Joint – this can be applied to a higher fidelity model.

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