The following notes have been formated nicely in www.lstc.com/sdb/356 
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Click (from top menu bar of LS-Prepost)    Misc > Model Info > Summary
  Min and Max values of stresses, displacements, etc will be summarized in 
  a table.  The state, part, and element or node at which the min or max 
  value occurs is also reported in the table.

You can have elements with the maximum or minimum values of a 
component be highlighted and their IDs identified in a fringe plot by
choosing Range > Ident Max value  or  Range > Ident Min value
after you create your fringe plot.

You can create a FRINGE PLOT which displays the maxima (or minima)
of a particular component (e.g., x-stress)
through all time for elements in a selected part or
collection of parts.  Do this using 
Fcomp > Stress > (choose a component) > Apply. 
Before choosing Apply, click on Frin
(right under the Apply button) and select XFrx (or Xfrn). 
This fringe plot is useful for
determining the spatial distribution of peak response.
Subsequently using   Range > No Average  and then  
Output > Element Results
will produce an ASCII file of peak values for EACH element but
not an abbreviated list of peak values for each part.

You can also create a TIME HISTORY PLOT which displays the maximum
value of a particular component (e.g., x-stress) at each point in
time across an entire
part.  Do this using History > Element > (choose a component) > Plot.
Before choosing Plot, click on Value: Elm (located under the list of
components) and select Max (or Min) AND select a part by clicking on it.
This history plot is useful for determining
the temporal variation of peak response within a single part.
On the history plot, an
element ID, peak value, and time of the peak value is listed.
Selecting Max/Print or Min/Print (instead of just Max or Min)  will do the same but 
then the lspost.msg file will include time, max/min value, elem id and part id
for each data point in the curve.

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Example:
You can create an ASCII file of peak resultant nodal displacement vs. time 
with LS-Prepost by reading 
in d3plot and selecting the following:

Fcomp
Frin (3rd button from bottom); change from Frin to XFrn
Ndv (right below highlighted "Stress" button)
result displace
Apply
Output   (2nd button down from top, right under "Follow")
Nodal Results
Current
Write

After you write the file, exit LS-Prepost and reexecute the program 
before continuing with the 
following steps.  

At any given time, you can identify the node with the max resultant displacement 
at any given state by selecting
Fcomp > Ndv > result displace
The location of the max displacement is noted in the upper left corner 
of the fringe plot.  Just step through time using 
the "+" button and make a note of the controlling node at each time.


jpd