Metal screw contact surface with Wood and Steel Angles
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- Last Post 09 December 2018
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Screw: a head and a shank the length of the screw. Don't model the screw threads, don't model the pointed tip, just a flat end instead of a pointed end to make it easier to mesh. Split the face of the shank at the depth of the pre-drilled hole in the wood.
Wood: a 5/16" hole the length of the predrilled hole and a 1/4" hole at the bottom of that hole that is equal to the depth of thread engagement. In other words, subtract the screw from the wood to make a hole. There will be a small flat between the pre-drilled 5/16" hole and the 1/4" screw hole in the wood. That is okay.
Steel: you already have that hole.
- Bonded contact between the bottom half of the screw and the screw hole in the wood.
- Frictional contact between the top half of the screw and the pre-drilled hole in the wood.
- Frictional contact between the top half of the screw and the hole in the steel.
Note: the above two can be in a single contact definition, make the screw the Target and the two holes the Contact side.
- Frictional contact between the underside of the screw head and the steel flange face.
- Frictional contact between steel flange faces and the wood face.
i already removed the threads. I just need to remove the tip.
Thanks a lot for your detailed answer Peter!
1. Is there a way in spaceclaim to select all the screws in the model by clicking on one screw and then all other solids of the same shape? There are many screws in the model and i don't want to select all screws individually?
2. Is there a simple way to remove the screw tip on one screw and apply this operation to all other screws?
3. i created a hole in the wood at each screw. The hole shape in the wood matches up the screw shape. So if i remove the screw tip, do i need to use the "combine" tool again. i am trying to save time because it took me a lot of time to do it.
1. If you used Assemblies and Components, then there is only one screw used many times. If you change that one screw, they will all update.
2. See #1.
3. Removing the screw tip is only a minor improvement to the mesh and not worth a great deal of effort. Leave the tip in place for now.
What is important is to split the face of the screw to separate the part of the screw that is bonded to the wood in the 1/4" hole and the part of the screw that has frictional contact in the 5/16" hole.
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