Ordering The Variables In The Sub-directory; A Second Example Of Mohr's Circle Calculations - HP 48gII User Manual

Graphing calculator.

The result is:

Ordering the variables in the sub-directory

Running the program MOHRCIRCL for the first time produced a couple of new
variables, PPAR and EQ.
variables necessary to plot the circle.
variables in the sub-directory, so that the programs @MOHRC and @PRNST are the
two first variables in the soft-menu key labels. This can be accomplished by
creating the list { MOHRCIRCL PRNST } using: J„ä@MOHRC @PRNST `
And then, ordering the list by using:
After this call to the function ORDER is performed, press J. You will now
see that we have the programs MOHRCIRCL and PRNST being the first two
variables in the menu, as we expected.

A second example of Mohr's circle calculations

Determine the principal stresses for the stress state defined by σ
σ
= -6.25 kPa, and τ
yy
from the figure the values of σ'
To determine the principal stresses use the program @PRNST, as follows:
J@PRNST
12.5˜
6.25\˜
5\`
The result is:
To draw Mohr's circle, use the program @MOHRC, as follows:
These are the Plot PARameter and EQuation
It is suggest that we re-order the
„°@) @ MEM@@ @) @ DIR@@ @ORDER.
= - 5.0 kPa.
Draw Mohr's circle, and determine
xy
, σ'
, and τ'
if the angle
xx
yy
xy
Start program PRNST
Enter σx = 12.5
Enter σy = -6.25
Enter τxy = -5, and finish data entry.
= 12.5 kPa,
xx
o
= 35
.
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