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  1. natepiercy

    PSpice - Combined power dissipated by selected resistors?

    Very, VERY new to PSpice, and using PSpice for TI. I've got a resistor network set up with a voltage source, and my simulations are working properly. Is there any way to set up an output that adds together the power dissipated by resistors named R1, R2, and R5, for example? I've got 30+...
  2. natepiercy

    Service cord vs trailer cable - what's the difference?

    Obligatory: this might not be the correct forum for this question, so please point me in the right direction if so. I'm looking at an application that uses 14/4 wire to send <2A to solenoids at 12VDC. The cable would be routed around 80 feet along a piece of farm equipment in a field. I'm...
  3. natepiercy

    Part Name, Part Description, Both?

    Looking for some general weigh-in regarding what constitutes a part "name" vs what constitutes a part "description". Someone recently told me that separating Name and Description is going the way of the dodo because "everything is in a [PDM system] now, so you can just search for it". I'm not...
  4. natepiercy

    Customer needs stand &quot;OSHA certified&quot;

    We have a customer who wants a set of stands (fixed height supports) OSHA certified for a manufacturing environment. I spent two and a half years doing tool design, but I've never heard of a custom tool or fixture being "OSHA certified". Anyone have experience with getting a custom device...
  5. natepiercy

    Heat Transfer with Solar Loading

    70mph wind is a pretty serious forced convection. I can't imagine a scenario where a body would have its temperature significantly raised by solar radiation while also subject to a hurricaine-class wind.
  6. natepiercy

    Any comments on this large energy storage device?

    If that concrete wall is strong enough, I don't see why this is a bad idea. It seems more feasible to dig a giant hole to store pressurized water than to build a giant tank many feet off the ground. Certainly, this is a more complicated system than a water tower, and I'd be curious to see how...
  7. natepiercy

    Universal Joint (Hooke's Joint)

    Excerpt from the forum's posting policies. On the other hand, members are expected to: Search Google, Previous Posts, and FAQs Prior to Posting.
  8. natepiercy

    How to model a working spring.

    This Youtube video shows from spring creation to the animation procedure. Outside of an actual animation, I believe you have to rebuilt to get the spring to change its length to match the current geometry.
  9. natepiercy

    Assembly/Drawing Configurations and Mate Best Practices

    QFT
  10. natepiercy

    Assembly/Drawing Configurations and Mate Best Practices

    Jieve, We use configurations in assemblies that can be assembled multiple ways, such as a bracket that can on the front or back of an arm. I personally have used configurations (well, Simplified Reps in Creo, but same thing) in tooling / fixture design, to show that a tool/cart/fixture works for...
  11. natepiercy

    Aligning center of hole with center of triangluar feature

    Drawoh, Yes, this is a weldment. As far as accuracy, the parts are currently coming in from China, and their lack of parallelism and alignment is visible (even to the untrained eye) in 5% or more of parts. My goal is to establish some criteria for inspection that gives our customer a) the...
  12. natepiercy

    Help me get these studs out

    Your second picture in the above post leads me to believe you've got them all out. Is this so? If not, might I humbly suggest using an abrasive cutoff wheel resting on top of the washer? In my experience, these have less tendency to walk than a sawzall or similar device. If you're concerned...
  13. natepiercy

    Aligning center of hole with center of triangluar feature

    I'm very much a beginner with GD&T. My intention here is to say that the top plate must be parallel to the bottom plate (to a certain extent) and the center of the hole i the top plate must be aligned with the center of the triangle in the base plate when set on the base plate. My current...
  14. natepiercy

    redoing tasks assigned with incomplete instructions.

    I think Jboggs hit this one right on the head. In addition, I've discovered the following: If your first response (to anyone, customer or boss) is "this isn't clear enough" or "give me more detail" they will probably think you're either incompetent or being difficult (not saying they're right...
  15. natepiercy

    Moving Sidewalks in Airports

    Please don't take away our Darwin devices. "... I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?" - <xterm>
  16. natepiercy

    Does this concept have any viability

    I'm going to go out on a limb and say that there's a reason that gearing is typically done with gears. Introducing a hydraulic system means a crankshaft, energy losses to heat, potential for leaks, any number of problems. While I'm struggling to come up with a solid reason as to why you wouldn't...
  17. natepiercy

    engineering salaries

    I don't see why medical doctors don't make more frequent use of the MD abbreviation. I think a title like "Dr James Bond" carries the same weight as "James Bond, MD". If we could somehow convince the medical doctors to follow the standard "<First> <Last>, MD" and "MD <Last>" it would make room...
  18. natepiercy

    engineering salaries

    That's a pretty hefty claim against the country that invented the airplane and put a man on the moon. What history are you talking about?
  19. natepiercy

    engineering salaries

    I never saw engineering as something so prestigious that parents would pressure a child into it. Then again, I'm just another boring mechanical in the sea, not biomedical or aerospace.
  20. natepiercy

    engineering salaries

    Do Canadians not check to see that their degree is in demand before they pursue it? I know one could ask the same of Art, History, and English majors in the States, but I'd expect those thinking of pursuing engineering to have slightly more forethought than the "next guy".

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