All Questions
Tagged with mechanical-engineering solid-mechanics
111
questions
1
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1
answer
197
views
Constant tension...does angle between rollers matter?
Thank you in advance to anyone with time to take a look at my question here. For anyone interested, this is a question in regards to an open source film scanner project, which can be found here: https:...
- 111
0
votes
2
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169
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Stress in a L-shaped Beam due to Thermal Expansion
A L-shaped frame $ABC$ (right angle at $B$) consisting of beams $AB$ and $BC$ are fixed at ends $A$ and $C$ to rigid walls. Find the tensile stress at $A$ when the temperature of the frame is raised ...
- 15
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82
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Why were handcuffs ever made with a chain between them?
I've noticed that modern handcuffs are always attached directly to each other, without any "chain" of any length in between. I guess I can understand why that make them safer and more robust....
0
votes
1
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683
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Relationship between shear moduli in an orthotropic material
I'm confused what the relationship between each of the shear moduli are in an orthotropic material. From what I understand, there are 3 independant major shear moduli, G12, G13, and G23. They each ...
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2
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3k
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How to calculate press load for an interference fit with no friction coefficient between the materials (shaft & hub)
Press-fit load calculation always takes friction into consideration and gives you the load expression as follows,
$$F = µ\cdot PA$$
where µ is the friction coefficient, P (Interference Pressure) is ...
- 51
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2
answers
100
views
Is there a way to solve this complex statics problem algebraically?
This problem can be solve in 2 ways either I solve it with vectors which would be relatively painful and more time consuming and the other faster way is algebraically but I faced a problem when trying ...
- 173
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2
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71
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Question about cam follower design
It's always said that jerk function should be smooth to avoid undesired vibrations. What exactly is the vibration in a cam follower mechanism and why is it important to avoid it?
- 50
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2
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310
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Is Smith Diagram and Modified Goodman Diagram the same? And how does one construct it?
I am confused about the names. Moreover, I haven't found any textbook which attempts to show step-by-step construction of these diagrams.
I would be happy if anyone pointed to some textbooks or even ...
- 11
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301
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What is meant by Solid Mesh and Surface Mesh? [closed]
Solid Mesh vs Surface Mesh, which method should I choose in simulation studies. What is the geometry behind these meshes. Which mesh gives accurate results?
- 57
2
votes
3
answers
23k
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Difference between Stiffness (K) and Modulus of Elasticity (E)?
Stiffness (F=Kx) is the extent to which an object resists deformation in response to an applied force. Elastic Modulus (E=Stress/Strain) is a quantity that measures an object or substance's resistance ...
- 57
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84
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Bending stress wave resulting from a lateral impact on a beam
I want to approximate a bending stress wave resulting from a lateral impact on a beam which is on one end fixed.
According to Roarks 16.3-3 I can estimate a compressive stress wave from one mass ...
- 75
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votes
3
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127
views
Beam with width tending to zero
Suppose a cantilever beam (of rectangular cross-section) subjected to vertical transverse shear load at free end. If I consider any arbitrary cross-section then both bending and shear stress will be ...
- 88
2
votes
2
answers
526
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Should we use Hooke's Law (that linearly relates stresses to strains) if the stiffness of body is changing during deformation?
Assume I have a slender cantilever beam, fixed at one end and force applied on the other. Now, during the deformation, we know that the beam's stiffness is going to change and the force-displacement ...
- 1,365
1
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2
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567
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What is the difference between max shear stress at neutral axis in bending and max shear stress from Mohr's Circle?
The maximum shear stress which we get from the equation: $\frac{VQ}{It}$ (for instance, the maximum shear stress at the neutral axis for a rectangular beam cross section, fixed at one end and ...
- 1,365
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0
answers
66
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Strain gauge measurement using NI 9944
I am trying to measure the strain on a part using a strain gauge. The gauge is a 120 $\Omega$ strain gauge from HBM. I am using National Instruments (NI) hardware and LabVIEW software to capture the ...
- 187