Reliability HotWire

Issue 102, August 2009

Tool Tips

* How can I incorporate data from my Lambda Predict 3 prediction into my BlockSim analysis?

In BlockSim version 7.0.8 and later, you can add blocks that represent components or configurations that you have analyzed using Lambda Predict 3 (version 3.0.2 and later) in one of three ways:

  • Adding items from a Lambda Predict 3 file to a diagram: To do this, choose Diagram > Import Items from Lambda Predict. In the Import Lambda Predict Items window that appears, choose a Lambda Predict 3 file (*.lp3), select the item(s) that you want the new block(s) to represent and click Import. A new block will be added to the diagram for each top level item (i.e. system, subsystem or component) that you select to import. If you selected a system, a single subdiagram block representing that system will be added to the diagram. Additional diagrams will be added to the project as necessary to represent its subsystems and their components. Parallel configurations at the system/subsystem level, which Lambda Predict models using redundancy, are modeled in BlockSim using nodes.
  • Specifying a block’s failure rate by importing the failure rate from Lambda Predict 3: You can import a failure rate from an analysis performed in Lambda Predict 3 by clicking the Lambda Predict icon on the Failure Distribution page of the Reliability tab in BlockSim's Block Properties window (similar to how Weibull++ and ALTA parameters are imported).
  • Adding a template containing components from a Lambda Predict 3 file: You can add a Template that contains component information from Lambda Predict 3. To do this, choose Project > Add Template From Lambda Predict. The new Template will appear in the Template Panel and the Import Lambda Predict Items window will appear. Choose a Lambda Predict 3 file (*.lp3) and then select the component(s) that you want in the Template and click Import. If you select a system or subsystem in the Import Lambda Predict Items window, all dependent components will be imported to the Template. When importing to templates, only components are imported. Systems/subsystems are not imported.

Note that failure rate values from files created in Lambda Predict version 3.0.1 may not be imported correctly. It is recommended that you open the Lambda Predict file once in version 3.0.2 or later before you initiate the import. For more information about any of these procedures, refer to the BlockSim 7 Online Help.

* What features are available to help me build equations in RENO?

All equation-enabled windows in RENO, such as the Block Properties window and the Function window, provide "intelligent" features to help you save time and avoid errors when building equations. These include:

  • Auto-Complete/Intelli-Sense: When you press CTRL+SPACE while building an equation, RENO provides a list of recognized variables and functions. You can then select the desired item from the list.

  • Color Coding: As you type, RENO automatically color-codes recognized variables, functions and operands to make it easy for you to spot typing errors, undefined variables, unmatched parentheses, etc.

  • Variable Preview: RENO provides a summary of the properties of each defined variable that you use in your equations and allows you to view/edit the full definition with the click of a button.

  • Built-In Functions: RENO includes built-in functions for the following areas: Engineering, Math/Trigonometry, Financial, Statistical and Logical. When building an equation, you can select one of these functions and RENO provides fields with the required inputs, making it easy for you to set the parameter values.

By using these features, you can make the building of equations go smoothly and easily.

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