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Can't think how to make how to make this...ripped steel hole
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* February 12, 2018, 01:36:54 PM
Hi. I am trying to design a walk-through arch made of plate steel.

In the arch I would like to add rips to the steel plate where the edges bend outwards to represent the destruction from a Blitz bombing. Like you might expect the Titanic's gash to look, or a bomb that bends steel plate.

I can't work it out, because I am not distorting a flat surface, but a curved surface. I have attached a screenshot of the bare arch, now I need some bomb destruction.

I would be grateful for any ideas using TC21 Plat. Thanks

 :)

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* February 12, 2018, 01:51:45 PM
#1
How about laying out the Arch ‘flat’, then draw/extrude the gashes along edge and 3D subtract them. Re-bend the arch. If you want some of the shards bent, do that before making the "arch" bend. It seems like it might work, in theory.

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John R.

V17—V21, 2015, 2016, 2017
Designer, Deluxe, Expert, Basic, Platinum
RedSDK enabled
Windows 10, 64-bit


* February 12, 2018, 01:56:44 PM
#2
Can you split the surface rim using 3D Booleans with an array or rotated copy of thin sheets, then apply 'bend sheet' variously to each 'tongue' or 'petal' ? Perhaps in several places, to various degrees ??

I've never used the latter tool, but the former is part of my recipe for gapped voussoirs in Medieval-ish arches...

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* February 12, 2018, 04:20:09 PM
#3
Another approach...

Henry H

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* February 12, 2018, 06:51:09 PM
#4
That's counterintuitive.   If the ragged edges bend outwards, the explosion must've been within the arch? 

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* February 13, 2018, 01:12:27 AM
#5
Thank you all for your great replies. I am going give them a try. My goodness Henry, thanks for going to that effort. All the best...

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* February 13, 2018, 09:02:31 AM
#6
If your installation offers "Bend to path," you can tailor the elevation-view shape as you wish.

Henry H
« Last Edit: February 13, 2018, 09:07:23 AM by Henry Hubich »

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