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12 votes
3 answers
4k views

Schematic Diagrams for Mechanical Systems

Is there some sort of equivalent standardized schematical (topological) diagram -such as Piping and Instrumentation Diagram, Electrical Schematics, Process Flow Diagrams, etc.- for the realm of ...
joojaa's user avatar
  • 3,684
5 votes
3 answers
5k views

is bending moment on roller supports at beams zero?

isn't the bending moment supposed to be zero on roller supports at beams? then why isn't it zero here in this picture at x=2?
niosha afsharikia's user avatar
4 votes
1 answer
1k views

I want to understand this pneumatic circuit

I have trouble understanding the following pneumatic circuit diagram: I am new to reading circuit diagrams and i am unfamiliar with some of the symbols. I would appreciate if somebody could explain ...
engi1's user avatar
  • 41
3 votes
2 answers
344 views

How are common free body diagrams and similar illustrations made?

Over my education I've come across tons of engineering illustrations, most commonly free body diagrams and similar. I still do not know what software(s) is used to generate these. So many look very ...
dan's user avatar
  • 31
3 votes
0 answers
576 views

Pv Diagram of a pressure cooker

For a bit of self training in thermodynamics, I've been trying to think of some random systems and go ahead and try to solve them, some of these things I've stolen from random googling of university ...
DrMrstheMonarch's user avatar
2 votes
3 answers
663 views

Is an axial force applied at the centre of a beam considered a compressive force, tensile force, or both?

I was looking through some course notes and realized that I never fully understood this concept. So, looking at the diagram below we can see that there is a 20kN axial force being applied in-between ...
TwoWaySpeedOfLight's user avatar
2 votes
0 answers
104 views

Proper designator for a torque guard in a P&ID

What's the proper first letter designator for a torque guard in a DIN or ISO compliant P&ID? I find fist-letter designators for a few physical values (L for level, S for speed etc.) but none for ...
mart's user avatar
  • 4,791
2 votes
1 answer
767 views

Problems with shear force diagram in beam model

I am starting to learn how to use ANSYS APDL. So I don't have much knowledge in the software. I have modelled a cantilever beam (with beam188 elements) and the only load that i have applied was the ...
Marina Vendl Craveiro's user avatar
1 vote
1 answer
3k views

What software is used for drawing dynamic & mechanical diagrams? [closed]

I need to sketch some diagrams involving basic symbols like springs and dampers, specifying angles, perpendicularity etc... something like the images below: Obviously my first option was word, then ...
spe4ker's user avatar
  • 409
1 vote
1 answer
981 views

What does this P&ID symbol represent?

The symbol: Here is a part of the diagram:
storgt2's user avatar
  • 25
1 vote
2 answers
165 views

How to get a transfer function from this block diagram?

Pardon my paint skills, I did my best My attempt is short and seems to fail, I have no idea why: $$\begin{align} \alpha &= in - a_{1}\beta - a_{2}\gamma \\ \beta &= \alpha z^{-1} \\ \gamma &...
user1477107's user avatar
1 vote
2 answers
6k views

Electrical flowchart in Microsoft Visio : issues

I am trying to recreate in Microsoft Visio a diagram of a photovoltaic power plant that would look like the one below. But I have some issues for doing so, in particular : I don't know how to ...
R. Bourgeon's user avatar
1 vote
1 answer
511 views

In a control block diagram what does a block with an angled arrow through it mean?

I have been looking at papers describing how to do non linear control with neural networks. A lot of these papers have block diagrams with a symbol I don't understand. There is a block with an angled ...
Clendon Gibson's user avatar
1 vote
2 answers
400 views

Convention for spring symbols with lateral force

If you draw a diagram with a spring, is there any convention about how it should behave with lateral loads? I guess it might be either: Rigid Free Elastic with bending and/or shear stiffness Pin ...
user1318499's user avatar
1 vote
1 answer
485 views

Shear force and bending diagram un-uniformly distributed load

I already got great help on this topic, but I'd like to make sure that I get it. For example, take a beam of length 6 meters, left side fixed support and right side rolled support. There is a load of ...
Lazarus Jaeger's user avatar
1 vote
1 answer
32 views

should the hachures in moment and shear diagram be vertical?

when we plot the shear or moment diagram we add hachures to the area created with these diagrams , in most cases we see vertical hachures, is it represent the internal forces? or its just used to ...
Samir Benabdelaziz's user avatar
1 vote
1 answer
732 views

How to check if bending moment diagram is correctly drawn

EDIT: I will state my test problem description and then my solution. But before that, I would like to apprise you of the absence of the actual description given during test (which happened in Zoom and ...
sergei ivanov's user avatar
0 votes
2 answers
622 views

ELI5: How does this water (solenoid) valve work?

I took apart this hose faucet timer: When unpowered the valve is closed. When powered (either manually or by timer) it opens allowing water to flow through. I am attempting to learn how the open/...
n00b's user avatar
  • 103
0 votes
1 answer
612 views

Triangle symbol in pneumatic diagrams

After searching details regarding direction control valves, I can understand that the diagonal line indicates solenoid valve actuation. The zig Zag line represents the spring action so in this case ...
Fennekin's user avatar
  • 585
0 votes
1 answer
1k views

Calculating the transfer function of this block diagram

I'm not really sure what steps to take to solve the problem. I tried with G4 and G2 first but I'm not sure if that is the correct way.
Pilv's user avatar
  • 1
0 votes
1 answer
654 views

How does one plot an Abbott Firestone curve

I have a Mitutoyo Sj-210, that plots automatically a Firestone curve. I have another device that gives me the SRM values and ect but no curve. I have no idea how the Sj-210 does it despite being ...
Hive Mind's user avatar
0 votes
2 answers
818 views

formula for M(x) - Shear Force and Bending Moment Diagrams

I've watched the video "Understanding Shear Force and Bending Moment Diagrams" from "The efficient engineer" and i got a doubt in this exercise For $4<x<7$ I arrive to $V=-6x+...
user avatar
0 votes
0 answers
22 views

Are there any standards that specify line weights for Function Block Diagrams?

Are there any standards out there that specify what line weights should be used when creating a Function Block Diagram or other similar block diagrams used in software, systems, or controls ...
Passeris's user avatar
0 votes
0 answers
19 views

Is the average force diagram correctly put together?

I have done a cut in an object to perform calculations of where the object experiences the most stress (the most critical point). The cut will create Shear force (V) although this will be 0, axial ...
Technicend's user avatar
0 votes
0 answers
23 views

Tearing diaphragms on Saunders/Crane 1.5'' EC actuator valve (6 - 8 bar normally closed)

I am having torn diaphragms on my skids (used in pharmaceutical production plant). The tears are coming from 1.5" actuator valves (Saunders/crane EC type actuator normally closed, air to open [6 -...
Callie Mataczynski's user avatar
0 votes
1 answer
63 views

How to use this multi view diagram to create a isometric diagram?

I just started out learning about isometric and multi view and am already confused. Can someone help create an isometric shape from this multi view diagram? Thank you.
Voltage crayon 24's user avatar
0 votes
0 answers
40 views

Help understanding Engineering diagram

My problem basically boils down to the fact that based on my reading of this diagram, N = G + H, but based on the table of dimensions, it is not true. The diagram is from this document (OIML R 49-2 ...
Sudhakar Jannu's user avatar
0 votes
1 answer
90 views

How to get difference equation from this block diagram

I was posed a very similiar block diagram in my exam from this book (Alan V Oppenheim Ronald W Schafer - Discrete-Time Signal Processing-Pearson Education) but couldn't solve it: I want to solve for ...
Steve's user avatar
  • 3
0 votes
0 answers
215 views

Function Structure Diagram for Tennis ball launcher

I created this Function structure diagram for a tennis ball launcher for my homework and am not sure about inputs and outputs please- are they correct please- it feels like I could include more in the ...
Andrew Smyth's user avatar
0 votes
1 answer
227 views

What is the meaning of this symbol in Control System Diagram

I was reading the paper "Full-Speed Range Self-Balancing Electric Motorcycles Without the Handlebar" released in March 2016 by Professor Yang and Murakami in Keio University. I couldn't ...
Gunn Lee's user avatar
-1 votes
2 answers
55 views

What is the engineering way to describe a factory / manufacturing plant system in a formel and mathematical way

I am interested in mathematically describing as well as formalising a manufacturing plant so that other people in the engineering field understand how the system works. I am not from the engineering ...
user3352632's user avatar
-1 votes
1 answer
52 views

Block reduction need someone to check my work

I tried to solve this block but I am not sure if the end result is any good, some feedback would be nice.
Joe 's user avatar
  • 1