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<P style="MARGIN-BOTTOM: 0cm">Hello</P>
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<P style="MARGIN-BOTTOM: 0cm">Following my previous posts about Physical and
space frames here is an example of a structure I have just finished analyzing,
file ciel5</P>
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<P style="MARGIN-BOTTOM: 0cm">You can see the difficulties by looking at the
Physical Line “bolts” and “pin” which as their names mean are connecting bolts
and rotational free pins.</P>
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<P style="MARGIN-BOTTOM: 0cm">I did that with the function removeDouble</P>
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<P style="MARGIN-BOTTOM: 0cm">They are so small that could be easily selected
with the nearby element in an other group.</P>
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<P style="MARGIN-BOTTOM: 0cm">In the design process of such a structure one
keeps adding members to the frames sometimes they cross each others, a
connecting point would be useful</P>
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<P style="MARGIN-BOTTOM: 0cm">The function intersectTwoLines might be useful</P>
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<P style="MARGIN-BOTTOM: 0cm">removeDouble</P>
<P style="MARGIN-BOTTOM: 0cm">is an example of a function remove all the
elements of a Physical “b” from a Physical “a” to create a new one named
“a_claened”</P>
<P style="MARGIN-BOTTOM: 0cm">however strange things happen to the Physical
names</P>
<P style="MARGIN-BOTTOM: 0cm">see the comments in the file.</P>
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<P style="MARGIN-BOTTOM: 0cm">intersectTWoLines</P>
<P style="MARGIN-BOTTOM: 0cm">is an example of a function creating points at the
intersection (or pseudo intersection) of two straight lines</P>
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<P style="MARGIN-BOTTOM: 0cm">This function is very useful when one wants to add
new members crossing each others to a given space frame.</P>
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<P style="MARGIN-BOTTOM: 0cm">Consider adding something like it to Gmsh??</P>
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<P style="MARGIN-BOTTOM: 0cm">Note:</P>
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<P style="MARGIN-BOTTOM: 0cm">The “ciel5” example is a real life structure.</P>
<P style="MARGIN-BOTTOM: 0cm">It is the stage or room of the major event of the
“Festival d'Avignon” ( in july2009) named Ciels of Wajdi Mouawad.</P>
<P style="MARGIN-BOTTOM: 0cm">Due quote of Gmsh will be made in the mandatory
design calculation documents.</P>
<P style="MARGIN-BOTTOM: 0cm"><BR></P>
<P style="MARGIN-BOTTOM: 0cm">jean pierre aubry</P></FONT></DIV></BODY></HTML>