| How do engineers test their prototypes and ideas from CAD drawings?

How do engineers test their prototypes and ideas from CAD drawings?

johnny’s mombo asked:

Do engineers have a program where they can import the 3D CAD drawing and test it for physics and desired performance? Is there an industry standard simulation software for these things? If engineers design an engine or parts of an engine what is the simulation environment they test it in?

Please let me know your ideas and mention any software you might have heard of that is used in the (mechanical/electrical/auto) engineering industry - from laying out oil hoses for a piston to creating a rotating crank for that piston. Integration of circuits and electronics with this mechanical simulation would be ideal as well. I would like to design the “under the hood” portion of the car with this software (designing the body would be nice too).

I suppose you would be able to design something like a toaster, shaver, iron or a lawn mower as well.
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Any ideas are greatly appreciated!!!!!!

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3 Responses to “How do engineers test their prototypes and ideas from CAD drawings?”

  1. Yoho on May 18th, 2009 1:14 am

    There is no software out there that can simulate everything. Simulation software is available for parts of your requirements.
    You can get flow simulators to test the oil lines, you can get mechanical simulation to test for movement. There are electronic simulations but none that i have seen that also work with mechanical hardware.

    No matter what all this software is in the thousands to tens of thousands Cheapest simulation software i know of is cosmos. They use with solidworks. I believe you can get a student version for around 300.

  2. scott h on May 21st, 2009 7:12 am

    I use Pro-engineer and, to a much smaller extent, SolidWorks. Both packages can be used to create every part of an automobile.

    They also have ways of checking moving parts for interference. So, if you model your oil hose and other parts you could see how they interact. You can’t import drawings from other software and do analysis you will need the solid models.

    If you desire knowing what kind of forces are found on the moving parts during operation there are software packages that can create this data. I’ve used them but you usually must create simplified models of the assembly inside the software. It’s been a while since I’ve used these packages so Pro-e and SW may have this ability, you need to check their websites.

    Circuit boards can be modeled in Pro-e and exported to board layout software like Mentor for the placing of the traces. Once the circuit layouts are done you can import the information from Mentor back into Pro-e and all of the electronic components will be visible.

    I believe both Pro-e and SW are available to you for about $5000, again check the websites.

  3. koki83 on May 23rd, 2009 7:27 pm

    hi
    there are some programs used as vertual reality where u can build ur model and use as if its real
    matlab is a great program it do all the calculations but u must be very good programmer and proffesional in using matlab it self
    but the is a program its name is pro engineer it pretty much like autocad but little bit more complicated it performs the movement of the model if any alot of things
    good luck