Inventor General Discussion

## Inventor General Discussion

Distinguished Contributor
Posts: 203
Registered: ‎12-12-2003
Message 1 of 4 (29 Views)

# Erratic adaptivity behavior

29 Views, 3 Replies
12-10-2002 06:10 AM
I am trying to simululate a hydraulic cylinder between two components (A & B) with an adaptive line.
I start a new part for the cylinder, make a line (not constrained to the origin, not horizontal, not vertical). I place a circle at each end of the line for ease of constraining later. I do not dimension the length of the line. I make the sketch adaptive. I make the part adaptive. I constrain one end of the line to part A. I attempt to constrain the other end of the line to part B, but cannot because the line will not change length. If the line is adaptive, why won't it change length?
Thanks for the help
Phil Quenzi
*KJohnson
Message 2 of 4 (29 Views)

# Re: Erratic adaptivity behavior

12-10-2002 08:52 PM in reply to: pquenzi
I made two parts one with two sketches and two
workpoints in the air.  The other is a line with two workpoints on either
end.  The second had an adaptive sketch and the part was adaptive.  It
adapted fine when I mated the work points to each other.  What happens if
you select the opposite end first?  You may have to try different
combinations of points.  Part A and Point A, Part B and Point B, Part A and
Point B, etc.  Sometimes adaptivity is picky about what you constrain
first.  Good luck

Kathy Johnson

style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
I
am trying to simululate a hydraulic cylinder between two components (A &
B) with an adaptive line.
I start a new part for the cylinder, make a line
(not constrained to the origin, not horizontal, not vertical). I place a
circle at each end of the line for ease of constraining later. I do not
dimension the length of the line. I make the sketch adaptive. I make the part
adaptive. I constrain one end of the line to part A. I attempt to constrain
the other end of the line to part B, but cannot because the line will not
change length. If the line is adaptive, why won't it change length?
Thanks
for the help
Phil Quenzi
*GCooper
Message 3 of 4 (29 Views)

# Re:

12-10-2002 10:09 PM in reply to: pquenzi
Also look for grounding at the sketch
level, this upsets adaptivity. Adaptivity is very picky about everything.
But very handy.

gcooper

style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">

I made two parts one with two sketches and two
workpoints in the air.  The other is a line with two workpoints on either
end.  The second had an adaptive sketch and the part was adaptive.
It adapted fine when I mated the work points to each other.  What happens
if you select the opposite end first?  You may have to try different
combinations of points.  Part A and Point A, Part B and Point B, Part A
and Point B, etc.  Sometimes adaptivity is picky about what you constrain
first.  Good luck

Kathy Johnson

style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
I
am trying to simululate a hydraulic cylinder between two components (A &
B) with an adaptive line.
I start a new part for the cylinder, make a
line (not constrained to the origin, not horizontal, not vertical). I place
a circle at each end of the line for ease of constraining later. I do not
dimension the length of the line. I make the sketch adaptive. I make the
part adaptive. I constrain one end of the line to part A. I attempt to
constrain the other end of the line to part B, but cannot because the line
will not change length. If the line is adaptive, why won't it change length?

Thanks for the help
Phil Quenzi
Distinguished Contributor
Posts: 203
Registered: ‎12-12-2003
Message 4 of 4 (29 Views)

# Re:

12-11-2002 09:53 AM in reply to: pquenzi
Thanks for the suggestions. Boy, it sure is picky. I wish it worked more reliably, as it sure is nice when it works.
Phil

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