Hi all! I'm a structural engineering student in California, and I do a weekly blog post about a cool California structure called #seismicsaturday. This week, I am featuring a beautful glu-lam beam bridge at UC Santa Cruz. I noticed this weird shield-like component of the structure (circled in pink) and I have no idea what it is? My only possible guess is that it was put up by some parkour enthusiasts to do spins off of... not very likely though. Anyone seen this before, or know what it is?
https://preview.redd.it/3rpmqubu1e681.png?width=1440&format=png&auto=webp&s=337a3a528fb97fea7d3f0d05c0ea57df9f3a3929
Hey all, I am a hobbyist working on a theoretical diaphragm design and I would like to use HSFLD241 elements. However, this requires APDL commands. I am very unfamiliar with these and coding as a whole, but I think my objective is pretty simple. Below I have attached pictures (Imgur) of my simulation before adding what I need. It is essentially a circular plate mounted to a circular cavity. There is a 200 lbf direct spring force pushing on this plate. The simulation works well, and I get the same (ish) results with my 3D model.
All I want to do now is assign an incompressible fluid to the cavity, instead of having an empty cavity. I need to use APDL commands to assign the 241 elements to the inside walls/nodes. I would like to see a near zero deflection from the diaphragm and I need to monitor the pressure in the cavity that allows this (opposes the spring force).
I have also added pictures of an attempt I had at adding 241 elements, as well as the subsequent results. I canβt interpret what I did wrong, which is why I am here. Any tips would be helpful!
https://imgur.com/a/Ui1ciGE
So I'm trying to do a structural analysis in CATIA V5 with 1D members. There's an option in Generative Structural Analysis to specify members' cross section.
I created a 2D sketch, created "Lines" and when I use the "Join" command, he gives the "Manifold error" (see screenshot). And if I don't "Join" them, after meshing, CATIA treats the members separately for simulation.
How should I approach this?
(If I add members before simulation, CATIA meshes them with 3D elements, and I don't want that)
Hi, I'm designing my dream scripting language.
It has runtime typechecking (I'm planning to change it to ahead-of-time typechecking with Visitors), OOP (not this crippled not-so-OOP like in JS or Python (im not saying this for debates, please stay away from flame and offtopic), but like in C++, Kotlin, C# or Java. Or at least like in PHP). What I mean by real OOP? Standard classes, structs (since my language is interpreted, there are no differences between classes and structs other than standard visibility and the fact that structs are copied by value), visibility (public, private, etc), static members. I have also implemented function and operator overloading, which is neat.
I have come up with an idea of an object interface.
Here is an idea with examples (Gist): https://gist.github.com/Craftist/fc6d6e25256786142a5b344717eddb28
Here is my custom-syntax-highlighted version (in text):
https://preview.redd.it/ncxvlmwdpn671.jpg?width=1236&format=pjpg&auto=webp&s=d54398e5e3df4bdbc2626af34a9917d2b0a35147
Full size (resolution and quality) version: https://i.imgur.com/RNtAr79.png
I guess the syntax is pretty straightforward -- it's a mix of Kotlin and JS.
A couple of clarifications:
- Function declarations can omit parameter parentheses if the function doesn't have parameters.
- `object` keyword defines an anonymous class (like `object` in Kotlin, `{ ... }` syntax in JS (altho it is untyped) or `new { }` syntax in C# (altho my language's anonymous classes are much more versatile))
- Proposed `object interface`s can only contain entries that are `identifier COLON type`, and functions in actual types correspond to fields with Function type, as there are no functions in my language per se, they are variables (or constants if you wish) of functional type.
- My language is, again, naming-typed (instances of A cannot be set to variables of B even if they are identical in contents, unless A is a subclass of B). I just wanted to add optional structure typing, for example, for this:
https://preview.redd.it/4cv7xrsion671.png?width=1092&format=png&auto=webp&s=cf1b986bb22c91dd8813bd65e93de20345e36c46
Also, I'm starting to get suspicious that this thing can cause problems with overloading. I will either have to define precedences for certain ambiguities, or ditch the idea completely.
So what do you guys think?
Which books or where can i find distinct definitions and differences and purpose of different structural members such as super structure, sub-structure, footings, pile, pile cap, ground beam, plinth beam, tie beam, slab beam, retaining wall, cantilever beams, different kinds of column and their detailed sectional and plan drawings?
I have been reading recently this book. It is so intresting and has great content. I would like ask if any of you know any other, similar, more modern, of course focused on structural design with such great figures. I would totally recommend this to anyone intrested in the way the engines are structured and calculated. https://www.amazon.de/Konstruktion-der-Luftstrahltriebwerke/dp/B00J6XD28O
Metal has to serve a structural purpose in the design in instances where it could not be replaced by plastic, for example.
https://preview.redd.it/vd96z7whcvt51.png?width=343&format=png&auto=webp&s=0c21afc0b0cbcb0fb40f5fcca6f8d46fe2752a0d
https://preview.redd.it/49bml41kcvt51.png?width=512&format=png&auto=webp&s=292eeec20b9f3b8534617b9135512bf58ad10d0f
I really hate glass backs. Is there a good engineering justification for them?
Often in emacs I want a unique symbol for list elements for things that flow from each other rather then after each other like default list implies.
Hi there,
I have been working on a structural Revit model in Revit 2018 and after making a preliminary precast panel plan and also tinkering with some 2D annotation families/titleblock template stuff and loading those back in, I come back to work more on the model and my foundations and steelwork appear to be gone. The precast panels and floor slabs are still there and reveal hidden doesn't show the missing elements. I'm pretty adamant I didn't delete them. Is there any other way they could be hidden such as object styles etc? Thanks
EDIT: Turns out I deleted some blank schedule data cells that removed the elements with them. Beware if you didn't know about this!
