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2D- Truss Member Analysis

I am a graduate student trying to sharpen the direct stiffness method skills. However, I am stuck at the beginning. The problem is given in the image. Can someone help me to write down all the nodal ...
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0answers
4 views

How to calculate flow coefficient to choose a pressure regulator

I'm attempting to choose a pressure regulator(for use with an inert gas) for a personal project I am working on. I know that the inlet pressure will be 2000 psi and outlet pressure of 300 psi. I also ...
1
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0answers
9 views

What is the rationale for a 6x6 truck chassis with 2 axles front vs. 6x6 chassis with 2 axles rear?

What is the rational for these two different 6x6 truck chassis arrangements? Is it merely a matter of intended distribution of weight across the chassis while in use? As in, two axles up front to ...
1
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0answers
5 views

Ethernet to serial converter using TM4C129EXL

I need help regarding the lwip stack with tiva c, I am building UDP to serial converter, the function is working correctly, but I have some concerns: When I receive the UDP packet buffer, I directly ...
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0answers
15 views

What is the top limit for torque per diameter ratio for electrical rotation mechanism working in a tube?

Use case: industrial stop valve placed in an another pipe welded perpendicularly making a T-shape. To make the question more specific let's consider 50mm inner diameter pipe for the linear actuator ...
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0answers
6 views

Line of sight to satellite antenna

If I have the ECEF location of a satellite ground station and the beam width, how can I determine if an antenna on a satellite is within range of the ground station? I have the ECEF position of the ...
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2answers
16 views

Measuring shaft torque of a small motor

I would like to determine the mechanical output torque and power of a small motor without using expensive strain guages and similar and have come up with the idea of determining the maximum mass that ...
0
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1answer
20 views

Ductility of Fe-Ni Alloy

Cold worked Fe-Ni rod is very brittle and not suitable for drawing. What would be the best heat treatment parameters for increasing the ductility of a Fe-Ni Alloy? Does increase in the Co content make ...
0
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1answer
17 views

what means Probablity of event excedence of so many years

I means to know about occurance of earthquake events when we say that earthquake of 0.5 g will occur in 50 years in excedence of.
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2answers
25 views

Where can i download AutoCad Tutorials?

I'm pursuing Mechanical Engineering and i need to learn AUTOCAD, is there any site where i can download free video tutorials
-2
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1answer
21 views

Heat Exchangers

LMTD of a counter flow heat exchanger is 20°C and cold fluid enters at 20°c & hot fluid at 100°C, mass flow rate of cold fluid is twice that of mass flow rate of hot fluid. Cp of hot fluid is ...
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2answers
25 views

Does the quality of a microphone affect the frequency and intensity(dB) of the sound it can pick up?

Does the quality of a microphone affect the frequency and intensity(dB) of the sound it can pick up? Do all microphones pick up sound as it is in real life?
0
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1answer
14 views

Finite Element software for chemical diffusion in liquid

I'm an engineer who needs to do FEA for the first time. I need to model chemical diffusion in a liquid in a container with specific geometry. For now fluid is assumed to be not flowing. What ...
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0answers
10 views

What is the future of line maintenance service providers in EU? [on hold]

To elaborate on the question further. What do you think are the strengths, weaknesses, opportunities, and threats to Line Maintenance service providers based in the EU such as BA Engineering, ...
0
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1answer
32 views

Is there a standard for where treelines are drawn?

On surveys and site plans, I've often found treelines. These look like the below image, and serve to delineate in a very approximate way the areas full of trees and those that aren't: Is there a ...
0
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1answer
5 views

Does Pavement ME Design output the tensile strain beneath an AC layer?

I'd like to know the tensile strain beneath the asphalt concrete (AC) layer in my design structure. Usually, the strain is used to calculate the number of axles (Nf) that the pavement structure can ...
0
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1answer
28 views

installing swing hook before concrete is poured

I want to place a swing hooks in place before the concrete is poured so that , i dont have to drill a hole later. My contractor is not ready to make these bolts with TMT bars itself.. what kind of ...
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0answers
6 views

How to get version from an abaqus output database file?

I want to read some data from an .odb file, but when I open it using the C++ API I always get this error message: file.odb is from a more recent release of Abaqus. The current Abaqus ...
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0answers
8 views

Sources on SA:V ratio

I have done a fair bit of research but I just dont understand whats the importance of SA:V ratio in terms of physics. There are some articles talking about thermal energy transfer, but most of the ...
0
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1answer
26 views

Is is possible to form a 3D object from the front, side, top views with a triangle, a square and a circle respectively?

A friend of mine asked me this question, but I don't know if it is possible or not. If it is possible, please show me how to construct it. If it is not possible, please prove it. Thanks.
2
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1answer
24 views

What plastic material is best for a snap-fit design?

I'm designing a plastic holder that will secure a metal part with snaps. Which plastic will be able to take multiple removals and re-insertions without getting weaker (bent out of shape) over time? [...
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2answers
28 views

What type of engineer/professional designs hydroponic farms?

What kind of professional/architect/engineer builds agricultural systems, specifically automated hydroponic systems? Things such as growing, cultivation, lighting, plumbing, harvesting, processing ...
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2answers
45 views

NASCAR corners on public roads

Why don't engineers build highways with corners such those on NASCAR speedways?
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0answers
13 views

Phrase to describe products that meet “test for” standards?

Often in the case of safety related products - My example is EN54 Fire detection and fire alarm systems. For a product to say that they comply with this standard, the product has to be tested and ...
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0answers
14 views

At which stage can borate solutions be injected to metallurgical coke?

Borates are effective to increase CSR of metallurgical cokes so that can be added to the metallurgical coke in the process, which place is best for this belching process? Coke ovens? Coke ovens (...
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2answers
27 views

Mounting an antenna base on a roof using only double sided tape?

I want to put a vertical antenna on top of my roof. The antenna is basically 4 meters of PVC pipe and 5 meters of 19mm aluminium tubing. The roof at my house is corrugated sheet metal, and I want to ...
0
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0answers
24 views

Safety of a 4inch wall [on hold]

One of my house's wall is 4inch wide. My house has one room . and other is lobby that is fully covered by roof. Its wall facing the outside road is 9inch in width. But one wall of it facing to our ...
0
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0answers
14 views

Determining the minimal needed wall thickness between two bores in a control block

Given a control block of simplicity with only two bores. These two bores could be parallel or just could be very close to each other at a specific point in the control block. The material of the ...
0
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2answers
25 views

Why do we analyse frequency response for step inputs?

In my class I'm in, our lecturer presented frequency response methods such as the nyquist plot and bode diagrams. Then when designing a lead compensator later, he said one of the specifications should ...
0
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1answer
26 views

Why do pitching machines use wheels and not solenoids, actuators, servos or peumatic cylenders?

I guess that generating movement is harder then keeping a wheel rolling, but in terms of power consumption is it possible to compare the power consumption of a motor for driving wheels to that of a ...
1
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1answer
32 views

What is the manufacturing method used to make aluminium C channel

I don't know how this is made and I don't know the name of the method to search for it to learn more.
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0answers
34 views

Is this space elevator idea plausible? [on hold]

https://imgur.com/yU8ttVq A better Space Elevator idea: Here is my revised space elevator idea. This variation of the space elevator concept solves the flaw in most designs because it doesn’t ...
0
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1answer
31 views

Orthogonal to Orthoradial reinforcement

Most of finite element calculations are performed with an orthogonal mesh (Cartesian coordinate system). From this calculation, we get two values of required steel area per linear meter: $Ax, Ay$ ($cm^...
0
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1answer
39 views

How much rain water run off do I need to power an LED greenhouse

My question essentially is how much water to power green house LED lights. Specifics bellow : Say I have a warehouse with a flat roof with a bunch of water tanks or the whole thing being a water tank....
0
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1answer
24 views

Consequences of Inextensibility of an in-plane line in Euler-Bernoulli Beam Theory

The Euler-Bernoulli beam theory is based on the hypothesis that the beam deforms such that a straight line normal to the beam axis before deformation remains inextensible straight normal to the beam ...
0
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1answer
21 views

Arc subtended by stretching of a conical spiral spring

I'm trying to work out the angle subtended by the stretching of a conical spring and I have a solution but I'm not 100% sure about it so would appreciate some feedback. An Archimedes spiral spring is ...
0
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0answers
27 views

How to obtain transfer function of servo?

I am using a servo motor and controlling it via arduino. Servo motor is part of a control system and I have to use System Identification techniques in order to obtain the servo's transfer function. ...
0
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1answer
41 views

Difference between perpendicular and transverse loads?

What is the difference between perpendicular and transverse loads? I saw this on a forum for 3d printing, but I couldn't find any online explanations on what the difference between both measures of ...
0
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1answer
25 views

How to read the block diagram for the 2nd order integrator feedback system?

This is a prework for a lab, I haven't seen things in the picture before and have no idea on how to transfer this to an equation.
0
votes
1answer
23 views

Headlight auto-dimmer in newer cars

My RAM truck has a feature that intrigues me and I want to know how it works. In auto-dimmer mode, the truck will automatically put on low beams headlights when there is on-coming traffic at night, ...
0
votes
1answer
31 views

Is it possible to cast copper around another metal

So i have seen these super conductor rods around (which appear to be copper around titanium/niobium). Now I am wondering (for a maker usecase) if its possible to create something similar by for ...
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0answers
15 views

Problem with relative reference frames

I came across this problem a while ago and I'd like to solve it, but I'm not even sure where to start. How would I start this problem and what formulas do I need? I'm not asking for a solution, but ...
0
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0answers
16 views

How do I get the closed-loop transfer function of the system, fitted with a PID controller, if the input valve has a transfer function?

How do I get the closed-loop transfer function of the system, fitted with a PID controller, if the input valve has a transfer function given by: $ \frac{Q(s)}{P(s)} = \frac{Kv}{(Tv*S+I)} $ Where Kv ...
0
votes
0answers
15 views

How to plot the response of the open-loop system when the input discharge suffers a unit step variation using LabView?

The open-loop system is a tank of water connected between two valves. My transfer function is $ \frac{H(s)}{Q_i(s)} = \frac{R}{A R s + 1} $ My time constant is $ {Tau(T)} = {A R} $ I know how to ...
1
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0answers
25 views

How to derive a value from a transfer function

I have a scenario where a valve q_in(t) is pumping water into a tank of height h(t) and area A, which is then pumped out by a second valve q_out(t) that has a resistance to water flow R. I got this ...
1
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0answers
28 views

How to calculate load on roller to create given deflection?

I am trying to calculate what loading on a fixed roller will create a predetermined maximum deflection. I ran some calculations, but the values I'm getting are significantly lower than I would expect. ...
3
votes
1answer
131 views

What are the meanings of `B.C. 3/8“` and `6-11/32”`?

I'm totally ignorant in this area, and probably didn't know how to properly google my question - sorry.. I found this specification here: (https://si.shimano.com/pdfs/ev/EV-RH-IM10-2045B.pdf). My ...
0
votes
1answer
17 views

Fluidic muscle in reverse, as a pump. Does this exist?

A fluidic muscle is a pneumatic or hydraulic actuator, consisting of a flexible tube. When the tube is filled with a working fluid (pressurized air or hydraulic oil), it balloons out and shortens. In ...
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0answers
27 views

Please,i am not sure if it is a bearing defect , could someone help me?

This pump has shown high vibration level on axial orientation (pump side). The picture represents velocity spectrum on horizontal. Some peaks matches BPFI. I had no training on vibration analysis (...
0
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0answers
20 views

Euler's equations of rigid body motion

I am trying to come up with a mathematical model of a miniature crane arm. In most of the resources that I found online, I find that the approach is using Euler's equations. My understanding of using ...

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