Parallel_Models.PPT

Building Parallel ModelsLast revised 12/06/2006

Parallel_Models.PPT

ASENT RBD Analysis – Parallel Models

ASENT’s RBD Analysis tool supports a number of ASENT’s RBD Analysis tool supports a number of different model types. Elements can be modeled in different model types. Elements can be modeled in series, parallel, series-parallel combinations, and series, parallel, series-parallel combinations, and complex active or standby redundancies.complex active or standby redundancies.

This presentation will focus on building This presentation will focus on building parallel parallel modelsmodels. For more details on RBD Analysis click on the . For more details on RBD Analysis click on the link below, and select Reliability Modeling to access a link below, and select Reliability Modeling to access a 20 page help file in PDF format.20 page help file in PDF format.

http://www.raytheoneagle.com/asent/tutorial/help.htm

Parallel_Models.PPT

ASENT RBD Analysis – Parallel Models

This tutorial assumes that you have already built a This tutorial assumes that you have already built a product tree structure for your project and that failure product tree structure for your project and that failure rates have been calculated and are current.rates have been calculated and are current.

If you need help with this please refer to the If you need help with this please refer to the Introduction tutorial.Introduction tutorial.

Parallel_Models.PPT

Step 1 – Select Type of Analysis

Two types of RBD Two types of RBD analysis are analysis are available: 1) available: 1) Mission Reliability, Mission Reliability, and 2) Mission and 2) Mission Reliability with Reliability with Repair. Repair.

For this tutorial, For this tutorial, select Mission select Mission Reliability.Reliability.

Parallel_Models.PPT

Step 2 – RBD Analysis Utility Menu

From the RBD From the RBD Analysis Utility Analysis Utility menu, set all of the menu, set all of the mission times to 8 mission times to 8 hours.hours.

Parallel_Models.PPT

Step 3 – Selecting the RBD Analysis Tab

The default model The default model is to model the is to model the blocks in series. blocks in series. When you click on When you click on the RBD Analysis the RBD Analysis tab in the tab in the Reliability Reliability Manager, it will Manager, it will display the display the associated model associated model for the item for the item selected. Click on selected. Click on the Edit option to the Edit option to change or refine change or refine the model.the model.

Parallel_Models.PPT

Step 4 – Editing and Refining the Model

This figure shows This figure shows the reliability the reliability worksheet for the worksheet for the selected item.selected item.

We will change the We will change the model type to model type to parallel by clicking parallel by clicking on the ‘Change on the ‘Change Model Type’ Model Type’ button.button.

Parallel_Models.PPT

Step 5 – Specify Number of Required Elements

Use the ‘+’ and ‘-’ Use the ‘+’ and ‘-’ buttons to increase buttons to increase or decrease the or decrease the number of blocks number of blocks or elements that are or elements that are required for your required for your parallel model.parallel model.

In this example, we In this example, we say that out of the 3 say that out of the 3 elements in our elements in our model that 1 is model that 1 is required.required.

Parallel_Models.PPT

Step 6 – Select the View Diagram Button

Click on the View Click on the View Diagram button to Diagram button to view the new view the new Reliability Block Reliability Block Diagram.Diagram.

Parallel_Models.PPT

Step 7 – Generating Reports

To generate a report, To generate a report, right-click on the item of right-click on the item of interest and select interest and select Reports | RBD Analysis.Reports | RBD Analysis.

Parallel_Models.PPT

Generating Reports (Continued)

The RBD Analysis The RBD Analysis report allows you to report allows you to report on just the item report on just the item that was selected or the that was selected or the entire subtree. Block entire subtree. Block diagrams can be diagrams can be included or omitted included or omitted depending on the user’s depending on the user’s preference.preference.

Select the report options, Select the report options, as desired, and click on as desired, and click on the OK button.the OK button.

Parallel_Models.PPT

Generating Reports – Sample Report

This concludes a brief tutorial on building parallel models. For This concludes a brief tutorial on building parallel models. For more details, please refer to the other RBD Analysis tutorials.more details, please refer to the other RBD Analysis tutorials.