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  1. tph216

    Wood Pellets - Saturated bulk weight estimation

    Just trying to determine a structural fault-case load action, based on a scenario where industrial wood pellets become dowsed with sprinkler water, and become saturated. I have the following information, but am struggling to find much else: * Bulk Density is stated as 650 kg/m^3 * Porosity...
  2. tph216

    Wood pellets - saturated density

    Just trying to determine a structural fault-case load action, based on a scenario where industrial wood pellets become dowsed with sprinkler water, and become saturated. I have the following information, but am struggling to find much else: * Bulk Density is stated as 650 kg/m^3 * Porosity...
  3. tph216

    Exporting Line Bodies with Parasolid to ANSYS Workbench

    I import SW models into Ansys Classic and Workbench and have had most success with the ACIS (.sat) file type. Make sure you go back a few versions on the version number though, I think 11.0 works well. The setting for that is in the export options when you click save as. In Classic I model...
  4. tph216

    Staircase Stringer Problem

    I haven't previewed the attached file, but your solution sounds like overkill to me. So long as the same profile is continuous along the length, you should only require 1 sketch (or just use weldments, which will already have the sketch for RHS250x150x10 in it). If you definitely want to do it...
  5. tph216

    Is a countersunk flathead screw in and of itself a locking fastener?

    I thought they were locating, rather than locking. We tend to avoid them in general, preferring counter-bored, if we need to hide the head. I can't see how they are locking though. I don't think the area under the head is even detrimental to the friction / locking property. Rather, I think...
  6. tph216

    Pneumatic Tests: Stored Energy & Safe Distances

    Hi, I have a very low pressure vessel which has been designed to BS PD5500. It operates in the vertical orientation in the range -100 to +200mbar internal pressure, and is approximately 6m ID by 15m high with conical ends. It is really more of a process vessel, and operates between 400-550...
  7. tph216

    UK self-build residential property

    Something like, "all structural joists to be fire-protected with minimum 1 hours fire resistance", is something that seems easy to comply with. Likewise, "floors must support xxx kN/m^2" also seems straightforward to comply with. I can design structural frames, but in my job I typically...
  8. tph216

    UK self-build residential property

    I know how to demonstrate compliance with regulations for the industry I am in, and know that the method is applicable cross-discipline. For example, as a mechanical engineer, the machineries directive might be one of the top-level applicable regulation. In the UK, this would be enacted...
  9. tph216

    UK self-build residential property

    Hi, If I were looking to design a house in the UK, what codes & standards would the design need to reference in order for it to comply with regulations? I'm a mechanical engineer, and considering whether undertaking the bulk of design work myself would be worthwhile, bringing in a structural...
  10. tph216

    Inventor general usability

    I should clarify further. We use Solidworks for concept development, and Catia for more consistent / detailed models for manufacture and issue. SpaceClaim is looking very impressive as a concept development modeller, and for import and tweaking of geometry from other systems. Especially for our...
  11. tph216

    Inventor general usability

    Don't necessarily agree; we have no way of knowing for sure. Well obviously, I'm experienced in Solidworks and out of practice in Inventor, so this follows (I won't disagree, but again have no way of knowing for sure). Well this isn't really what I'm comparing. Great, if you're faster than me...
  12. tph216

    Inventor general usability

    I would be interested to see some design exercises in the form of races to model a range of parts, by expert users of SW and Inventor respectively. I'm not that unfamiliar with Inventor, but I can't see SW being beat for speed and flexibility. And just stating "it is a fact that there are...
  13. tph216

    Inventor general usability

    @EngAddict: I don't agree that the projection of origin points into individual sketches in Inventor is essentially the same as what SW does. Or any other origin plane or axis either. In the underlying database of either package, when you do something like insert a dimension, you are creating a...
  14. tph216

    Inventor piping / plant design.

    Yes, I am getting the impression that Inventor isn't the best tool for this job. To answer your questions: 1. I am looking at 10 existing headers in various materials and to various codes, and 10 new headers (flanged extensions to the existing). 2. The pipe sizes range from less than 1" up to...
  15. tph216

    Inventor general usability

    Did I mention I am having this problem in 3D sketches. Dimensioning to a point is fine for a 2D sketch, but for 3D you need to go to a plane in order to adequately define the direction of the dimension. If I dimensioned back to the origin point in the 3D sketch, it would do a direct point to...
  16. tph216

    Inventor piping / plant design.

    Hi, I am attempting to use Inventor to model a plant design, including several piping systems. I cannot fathom out how to create piping headers without going down a long-winded route which feels a bit botched, to me. So, my top-level assembly is -500, the assembly containing my piping runs is...
  17. tph216

    Inventor general usability

    Hi, I have come onto using Inventor at a clients request (from Solidworks & NX), and am finding myself astounded by the shoddiness of the way in which Inventor does various things. I am here to check whether this is just me using the program wrong, or whether I am actually operating it...
  18. tph216

    What are good skills to learn?

    Learn to write and speak clear and concise English. It amazes me sometimes just how bad engineers' writing can be. It amazes me even more that they don't realise how damaging it is to their success, and that some even see bad English as some kind of badge of honour. Some engineers cannot even...
  19. tph216

    New engineer feeling like failure

    I've just read this whole thread just now, and it's very interesting. I'm 26 and have 6 years experience in 'engineering'. Only this past 18 months with an in-depth employer where I've really been pushed close to my limits, though. Prior to this, I hadn't really failed anything before (except...
  20. tph216

    Screwjack synchronising

    Hi, I have a set up of a beam over a rolling drum 15m long. The beam needs to move up and down (approx 80mm), and fore-aft (+/- 50mm). The beam ends are mounted onto an end bracket with vertical guide rails allowing the vertical motion. The beam end brackets then rest on two moving end beds...

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