<DOC>
<DOCNO>
581
</DOCNO>
<TITLE>
approximate formulas for thermal-stress analysis .
</TITLE>
<AUTHOR>
d. j. johns
</AUTHOR>
<BIBLIO>
lecturer, the college of aeronautics, cranfield, england
</BIBLIO>
<TEXT>
the basis of any thermal-stress analysis is the determination of the
temperature distributions in the structure .  for arbitrary flight
histories, the determination of such distributions is rather tedious
and not completely general .  this latter fact handicaps optimization
studies in the project design stage when it is desirable to be able to
express the thermal-stress distributions in a general manner .
in this note, general expressions are derived for the thermal-stress
distributions in a typical i-section using similar assumptions to
those of biot .
</TEXT>
</DOC>
