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February 19, 2022 at 3:45 pm
peteroznewman
Subscriber
Okay, I've changed my opinion. I see that due to the 50 Hz AC current, the force direction reverses at a 100 Hz frequency.
I went into SpaceClaim and changed the tolerance on the Share to 10 mm from 0.2 mm. That allowed all locations to merge. I deleted all Joints. I used Fixed Supports on all the Ground points. I changed the Analysis Settings to a cleaner set of steps. I changed the Damping after I obtained the first natural frequency from the Modal analysis. It now simulates to the end.
If the cable tension is too low, there are two ways you could increase it. One way is to add mass to the cables. One simple way to do that is to change the density of the material. Do you know the correct mass per unit length of the cable with all the insulation on it? Another way to increase cable tension is to draw a larger radius in SpaceClaim and make the cable length shorter.
How do you measure cable sag and what is the target value. Drawing a larger radius in SpaceClaim will also reduce cable sag, so it sounds like you need to do that.
I went into SpaceClaim and changed the tolerance on the Share to 10 mm from 0.2 mm. That allowed all locations to merge. I deleted all Joints. I used Fixed Supports on all the Ground points. I changed the Analysis Settings to a cleaner set of steps. I changed the Damping after I obtained the first natural frequency from the Modal analysis. It now simulates to the end.
If the cable tension is too low, there are two ways you could increase it. One way is to add mass to the cables. One simple way to do that is to change the density of the material. Do you know the correct mass per unit length of the cable with all the insulation on it? Another way to increase cable tension is to draw a larger radius in SpaceClaim and make the cable length shorter.
How do you measure cable sag and what is the target value. Drawing a larger radius in SpaceClaim will also reduce cable sag, so it sounds like you need to do that.
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