4 5 decimal

&[DATE] &[TIME] - &[FILENAME]

Global Stiffness matrix:

KG 51.011 17.678 3.783 1028 -^* - 1.123 1013 -^* 33.333 - 0 17.678 - 17.678 - 17.678 51.011 1.123 1013 -^* 33.333 - 00 17.678 - 17.678 - 3.783 1028 -^* - 1.123 1013 -^* 61.785 11.785 - 11.785 - 11.785 50 - 0 1.123 1013 -^* 33.333 - 11.785 - 45.118 11.785 11.785 - 00 33.333 - 0 11.785 - 11.785 11017^* 11.785 - 0000 11.785 11.785 - 11.785 - 11017^* 00 17.678 - 17.678 - 50 - 00011017^* 17.678 17.678 - 17.678 - 0000 17.678 11017^* 88 mat kN * mm 1 -^* :

Load Vector

P 010 - 00000081 mat kN * :

Solution for displacements:

KG 1 -^P * mm 0.183 0.527 - 0.078 - 0.41 - 11016 -^* 3.91 1017 -^* - 11016 -^* - 6.09 1017 -^* - 81 mat

These displacements are correct!!

Ok, so now name a variable equal to the above, say 'disp'

disp KG 1 -^P * :

disp mm 0.143 0.005 0.58 - 1.129 2.121 1016 -^* 2.837 1015 -^* 0 8.473 1017 -^* 81 mat

These displacements are not correct - why?

disp KG 1 -^P * :

disp mm 0.183 0.527 - 0.078 - 0.41 - 11016 -^* 3.91 1017 -^* - 11016 -^* - 6.09 1017 -^* - 81 mat

Try with small exponential numbers = 0

Global Stiffness matrix:

KG 51.011 17.678 00 33.333 - 0 17.678 - 17.678 - 17.678 51.011 0 33.333 - 00 17.678 - 17.678 - 0 - 0 61.785 11.785 - 11.785 - 11.785 50 - 00 33.333 - 11.785 - 45.118 11.785 11.785 - 00 33.333 - 0 11.785 - 11.785 11017^* 11.785 - 0000 11.785 11.785 - 11.785 - 11017^* 00 17.678 - 17.678 - 50 - 00011017^* 17.678 17.678 - 17.678 - 0000 17.678 11017^* 88 mat kN * mm 1 -^* :

Load Vector

P 010 - 00000081 mat kN * :

Solution for displacements:

KG 1 -^P * mm 0.183 0.527 - 0.078 - 0.41 - 11016 -^* 3.91 1017 -^* - 11016 -^* - 6.09 1017 -^* - 81 mat

These displacements are correct!!

Ok, so now name a variable equal to the above, say 'disp'

disp KG 1 -^P * :

disp mm 0.183 0.527 - 0.078 - 0.41 - 11016 -^* 2.66 1014 -^* - 11016 -^* - 6.09 1017 -^* - 81 mat

These displacements are now correct - why?

So this has something to do with the very small non-zero numbers, but why does this

work when evaluating the function, but not when you assign a variable to it.