Example Using Subdiagram Phase Blocks: Difference between revisions
No edit summary |
Lisa Hacker (talk | contribs) No edit summary |
||
| (One intermediate revision by one other user not shown) | |||
| Line 1: | Line 1: | ||
<noinclude>{{Banner BlockSim Examples}} | <noinclude>{{Banner BlockSim Examples}} | ||
''This example also appears in the [ | ''This example also appears in the [https://help.reliasoft.com/reference/system_analysis System analysis reference]''. | ||
</noinclude> | </noinclude> | ||
<includeonly>To illustrate how subdiagram blocks are handled in BlockSim’s simulations, consider</includeonly><noinclude>Consider</noinclude> a server that has two shifts each day, a day shift lasting 8 hours and a night shift lasting 16 hours. Within each shift, it has a peak period and an off-peak period with different durations. | <includeonly>To illustrate how subdiagram blocks are handled in BlockSim’s simulations, consider</includeonly><noinclude>Consider</noinclude> a server that has two shifts each day, a day shift lasting 8 hours and a night shift lasting 16 hours. Within each shift, it has a peak period and an off-peak period with different durations. | ||
| Line 29: | Line 29: | ||
#At 40.6 hours, in the Peak phase of the Night Shift diagram, Block A fails again. After this Peak phase, Block A gets CM and Block B gets PM in the maintenance phase. | #At 40.6 hours, in the Peak phase of the Night Shift diagram, Block A fails again. After this Peak phase, Block A gets CM and Block B gets PM in the maintenance phase. | ||
[[Image:Phase subdigram Up Down plot.png|center| | [[Image:Phase subdigram Up Down plot.png|center|650px|link=]] | ||
Latest revision as of 21:02, 18 September 2023
 |
New format available! This reference is now available in a new format that offers faster page load, improved display for calculations and images and more targeted search.
As of January 2024, this Reliawiki page will not continue to be updated. Please update all links and bookmarks to the latest references at BlockSim examples and BlockSim reference examples.
This example also appears in the System analysis reference.
Consider a server that has two shifts each day, a day shift lasting 8 hours and a night shift lasting 16 hours. Within each shift, it has a peak period and an off-peak period with different durations.
The RBDs for the Peak phase and the Off-Peak phase are:
The phase diagrams for the Night Shift and Day Shift are:
The main phase diagram with phase subdiagram blocks is:
During the Peak phase, the reliability of Block A follows W(1.5,30) and the reliability of Block B follows W(1.5,40). During the Off-Peak phase, the reliability of Block A follows W(1.5,15) and the reliability of Block B follows W(1.5,20). In the Day Shift diagram, both blocks have CM and PM with duration = 1 hour; in the Night Shift diagram, both blocks have CM and PM with duration = 2 hours. In the Day Shift diagram, the duration of the Off-Peak phase is 4 hours and the duration of the Peak phase is 3 hours. In the Night Shift diagram, the duration of the Off-Peak phase is 8 hours and the duration of the Peak phase is 6 hours.
The system log for 2 days (48 hours) is shown in the figure below.
- At 5.4 hours, in the Peak phase of the Day Shift diagram, Block A fails. After this Peak phase, Block A gets CM and Block B gets PM in the maintenance phase.
- At 19.9 hours, in the Peak phase of the Night Shift diagram, Block A fails again. After this Peak phase, Block A gets CM and Block B gets PM in the maintenance phase.
- At 40.6 hours, in the Peak phase of the Night Shift diagram, Block A fails again. After this Peak phase, Block A gets CM and Block B gets PM in the maintenance phase.
