Questions tagged [design]

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5
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1answer
2k views

What is the script function to select Solid Body in ANSYS Design Modeler?

I need to select a solid body in ANSYS Design Modeler, with script, in a design with multiples bodies. With the following command I select all the solid bodies, but this is not what I need. ...
3
votes
2answers
1k views

How to design a swivel connection for a single wheel trailer?

I'm trying to design a single wheel trailer for my underpowered VW, much like this one. Unlike a conventional trailer, it is attached to the car at two points. To prevent the wheel from dragging, it ...
7
votes
1answer
220 views

Sending out a 12d Civil Design Model

My project team and I delivered the design of a 14ha urban infrastructure development in Sydney for a Client. The project was to hand over the development at a Tender level of design, which would be ...
6
votes
2answers
4k views

Snap-fit design

I'm designing 2 objects that should be attached to each other and removed when it's necessary. So I though about snap-fit as a solution. There is a lot of types of snap-fit but I'm planing to use a ...
0
votes
2answers
4k views

Why are so many things around us rectilinear? [closed]

If you look at the man-made objects around you, you will see that almost all of them are either rectangular, or parallel and perpendicular. There are a few circles here and there, but the overwhelming ...
3
votes
1answer
1k views

Calculating deflection for a home built trailer

I am designing a 4'x12' trailer frame. 8' of it will support weight, the balance will be the tongue. My area of concern is bending at the ends of the long supports. There will be a wheel assembly ...
5
votes
2answers
2k views

Why does blood pressure cuff size matter?

There are a number of sources that confirm blood pressure cuff size can have a significant impact upon the measured reading. (See 1, 2, 3, 4) The most succinct description I have seen is this: ...
4
votes
1answer
69 views

Accounting for blank registration within CAD design

How do CAD designers account for the fact that a blank may have to be flipped to a different side in order to allow the piece to be completely milled through a CNC system? For an example, let's use ...
5
votes
2answers
2k views

Mechanisms for moving dual blackboards

I have to make a dual blackboard like the one here, http://www.ucd.ie/physics/lhcb/contact/blackboard.jpg, My biggest concern is what sort of mechanisms I should use to allow for smooth and easy ...
6
votes
1answer
32k views

How deep are utilities typically buried?

What are the recommended or relevant standards for US city planning with regards to depth ranges for various utilities such as water, natural gas, and power, as well as for subway or rail, etc...? ...
9
votes
4answers
828 views

What's a professional way of tracking design history in plant engineering?

If you look at the design documentation in our projects (Biogas and waste-to-energy plants), you find out what we plan to build but not what other options were considered and why they were discarded. ...
6
votes
1answer
9k views

What drives the honey dipper design?

Honey dippers are often made of wood. Is there a property of honey that drives this? Honey dippers are shaped like ovoids with lateral grooves. Is there something about the viscosity of honey that ...
8
votes
3answers
958 views

Why raised face for mating parts?

In designing mechanical parts in an assembly, sometimes the mating surfaces are raised faces. I've been told it's to provide a better seal. However, for piping (flanges), it seems to be the consensus ...
12
votes
2answers
1k views

Why are three way bridges rare?

It's true that most bridges are "two directional." But three way bridges are pretty rare, globally. I can understand why there wouldn't be many for rivers, but if bridges are designed based on the ...

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