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Anonymous

I will include the data or this lab. I just need a lap report that follows the rubric.

Also, I will include a lab report from previous student, please take it as an example to understand the lap report but be careful when you take info from it, so I will not have plagiarism issues.

The lab is called Shear and Bending Moment.

If you have any questions, reply to me.

Tags:
Mechanics of materials
ME350B
Lab Scope
Shear and Bending Moment
Radius of moment
Shear force apparatus

Mechanics of Materials Lab
ME 350B
Lab #4
Shear and Bending Moment
Date Submitted:
4/5/2018
Table of Contents
Objective…………………………………………………………………………………………..3
Introduction……………………………………………………………………………………….3
Scope……………………………………………………………………………………………3-4
Significance……………………………………………………………………………………….4
Apparatus…………………………………………………………………………………………4
Procedure……………………………………………………………………………………….4-5
Equations………………………………………………………………………………………….5
Results…………………………………………………………………………………………..5-6
Graphs………………………………………………………………………………………….....7
Discussion………………………………………………………………………………………...8
Conclusion………………………………………………………………………………………...8
Appendix…………………………………………………………………………………………..9
Objective:
The objective of this lab experiment is to determine the bending moment and the shear
force on the beam. In addition, we evaluate how to develop a shearing force and the bending
moment on a beam.
Introduction:
The aim of performing the experiment is to determine the bending moment and shear for
at whichever section of the beam. In addition, it helps us to develop the association among the
bending moment and shear force at different parts of the beam. Bending moment and shearing
force are significant factors to consider while designing a structural component. In this
experiment, we test a beam supported at two points with one end free and hang the weights from
different sections of the beam. Shearing force is defined as an internal resistance developed in
the beam cross section, so that the transverse external load acting on the beam is balanced. It
acts as an unaligned force that balances the load that pushes in one direction and the shear force
reacts at the opposite direction. Compression force occurs when the two forces are aligned into
each other. On the other hand, bending moment is the rotational force that acts perpendicularly
to the point at a particular distance away from the given point. This lab experiment is
significant in that it enable the engineers to understand how shear force and bending moment
impacts the material that are used for construction. Through distribution of loads on a beam one
can observe the impacts on the beam at different points under different weights.
Scope:
The purpose of this lab was to measure bending and shear placed upon a beam. We tested
a beam supported in two places with one free end by hanging weights from different parts of the
beam. The shear and bending acting on the beam have been then determined from our detectors
and calculations.
Significance:
This experiment is about the shear and bending moment and how they affect materials
that engineers use and assign for specific buildings. This is important since it works by
distributing loads on a beam in order to see how load could change the beam situation. By doing
this, some values are produced such as experimental stress and parabolic tress. Shear and
bending moment would give results about loads and it can occur in any compressive structure.
Apparatus:
•
Clamps
•
Weight Hangers
•
Shear force apparatus
•
Weights
•
TQ test frame
•
Digital force display
•
Moment beam
Procedure:
Ensure the test frame is put on the working bench to allow easy access of the frame
1. Place the four securing nuts at the top of the frame to their estimated ultimate locations.
2. Allocate both supports of the apparatus to the test frame with four of the shorter thumb
screws and the securing nuts.
3. Connect the digital force display to the bottom of the frame in the same way.
4. Use the supplied cable to fix the force sensor to the digital force display.
5. Connect the digital force meter to the power supply.
6. Ensure the force meter is set at Zero and the employ a small load to the beam and release.
Equations:
Load Force 𝑊 = 𝑚𝑔
Moment 𝑀 = 𝑊 × 𝑅
m – Mass of object
g – Acceleration due to gravity, 9.81 m/s2
R – Radius of moment (this is the length from point were moment is evaluated)
Sample computation:
From experiment:
Mass = 100g=0.1kg
R = 100mm= 0.1m
Calculations
Load Force (W) = .1kg(9.81m/s2) = .981 N
Moment (M) = .1m (.981N) = .0981 N-m
Results:
Experiment 1 – Point Loading
Load
Location Shear
Trial (g)
(N)
(mm)
(N)
1
100 0.981
-140
-0.4
2
100 0.981
100
0.2
3
100 0.981
220
0.4
Experimental
Moment (N-m)
Force (N) Moment (N-m)
-0.3
-0.0375
0.3
0.0375
0.6
0.0685
Theoretical
Shear Moment
(N)
(N-m)
-0.223
-0.231
0.23
0.223
0.52
0.038
Experiment 2 – Increasing Load
Load
Trial
1
2
3
4
5
6
(g)
100
200
300
400
500
600
(N)
0.981
1.962
3.924
3.924
4.905
5.886
Location Shear
(mm)
100
100
100
100
100
100
(N)
0.1
0.4
0.6
0.6
0.7
0.8
Experimental
Moment (N-m)
Force
Moment
(N)
(N-m)
0.3
0.0375
0.7
0.0735
0.9
0.1125
0.9
0.1125
1.1
0.1375
1.3
0.1625
Theoretical
Shear Moment
(N)
0.223
0.398
0.892
0.892
1.115
1.338
(N-m)
0.031
0.076
0.125
0.125
0.156
0.187
Experiment 3 – Distributed Loading
Trial
1
2
3
Load
(g)
(N)
100
0.981
100
0.981
100
0.981
100
0.981
100
0.981
100
0.981
100
0.981
100
0.981
100
0.981
300
2.943
100
0.981
100
0.981
100
0.981
500
4.905
100
0.981
Location Shear
(mm)
(N)
40
60
80
100
120
140
160
0.9
60
80
100
120
140
0.9
80
100
120
0.9
Experimental
Moment (N-m)
Force (N) Moment (N-m)
Theoretical
Shear Moment
(N)
(N-m)
1.4
0.175
1.561
0.2185
1.4
0.175
1.561
0.2185
1.4
0.175
1.561
0.2185
Graphs:
SHEAR VS LOAD LOCATION
Shear vs. Load Location
2
1.5
1
0.5
0
-200
-100
0
100
200
300
400
500
6
7
-0.5
-1
SHEAR VS WEIGHT
Shear vs. Weight
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
1
2
3
4
5
Discussion:
By analyzing the three graphs and table that summarizing results from experiment, a few
discrepancies were noted. In the second experiment there is a steady increasing line whereas the
bending moment vs. weight graphs in experiment 2 shows a steady increasing line and the shear
vs. weight graph is not 100% steady, nevertheless it increases as the load increases. Evaluating
the experimental and theoretical results illustrate a trivial divergence between numbers. This
indicates that there could be some resulting errors while performing the experiment.
Conclusion:
The experiment was conducted successfully and the objectives achieved. In the first case
of the experiment the mass was maintained but altering its location. This was repeated thrice to
assist in comprehending and creating the shear and bending moment diagrams. The second case
of the experiment the load was changed but maintained the point constant. It was concluded that
increased load at constant point increase the shear and bending moment. The third scenario, leads
to a conclusion that when the load is evenly supplied at a common point there will be no impact
on the shear and bending moment. The fourth experiment indicated that the values are dependent
on each other in a manner that if loading is dispensed, the moment diagram will be parabolic.
There was slight variation between the theoretical and experimental values thereby resulting to
experimental error. The causes of error included failure to check the condition of the apparatus,
and moving the apparatus while performing the experiment. To avoid such errors in the future it
is recommended to that shear force readings should not be recorded when the load is oscillating.
Lastly, ensure the apparatus are firmly screwed on the working bench.
Appendix:
For Point Loading
TRIAL
Load
(g)
N
(mm)
100
-0.3
-140
2
100
0.2
100
3
100
0.5
Load
(g)
(N)
Force(N)
Moment (N-m)
Theoretical
Shear
Moment
% Error
(N)
(N-m)
(%)
220
For Increasing Point Loading
Experimental
Location
N
Moment
Shear
(m)
1
TRIAL
Experimental
Location
(mm)
Moment
Shear
(m)
(N)
1
100
0.2
100
2
200
0.4
100
3
300
0.7
100
4
400
0.9
100
5
500
1.1
100
6
600
1.3
100
For Distributed Loading
Force(N)
Moment (N-m)
Theoritical
Shear
Moment
% Error
(N)
(N-m)
(%)
Experimental
TRIAL
Load
(g)
Location
N
(mm)
40
100
60
100
1
100
120
100
140
100
160
100
60
120
100
140
700
(N-m)
% Error
(%)
80
1.5
100
100
4
(N)
100
100
500
Moment (N-m)
80
1.6
100
3
Force(N)
Moment
100
100
300
(N)
Theoritical
Shear
80
1.6
100
2
(m)
100
Moment
Shear
120
1.5
100
For Influence Line
TRIAL
Load
(g)
1
Experimental
Location
N
(mm)
(m)
1
200
-0.6
-140
2
200
-0.6
-120
3
200
-0.5
-100
4
200
-0.4
-80
5
200
-0.3
-60
6
200
-0.2
-40
7
200
0.1
40
8
200
0.2
60
9
200
0.3
80
10
200
0.4
100
11
200
0.5
120
12
200
0.6
140
13
200
0.7
160
14
200
0.8
180
15
200
0.9
200
16
200
1.0
220
17
200
1.0
240
18
200
1.1
260
19
200
-0.7
300
20
200
-0.6
320
21
200
-0.5
340
22
200
-0.4
360
23
200
-0.3
380
24
200
-0.2
400
Moment
Shear
(N)
Force(N)
Moment (N-m)
Theoritical
Shear
Moment
% Error
(N)
(N-m)
(%)
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Attached.

Running head: Shear and bending moment lab report

Shear and bending moment lab report

Name of student

Name of professor

Name of course

Name of institution

1

Shear and bending moment lab report

2

Table of Contents

Objective and Scope…………………………………………………………………………3

Description…………………………………………………………………………………. 3

List of equipments……………………………………………………………………………3

Sketches………………………………………………………………………………………4&5

Procedure…………………………………………………………………………………… 5

Results……………………………………………………………………………………5,6,7&8

Equations……………………………………………………………………………………8&9

Graphs………………………………………………………………………………9,10,11,12&13

Discussion………………………………………………………………………………13&14

Conclusion……………………………………………………………………………………14

References…………………………………………………………………………………….15

Appendix………………………………………………………………………………………16

Shear and bending moment lab report

3

Objective and Scope

The main objective of this lab experiment was to determine the bending moment and the shear

force on the beam. The specific objective was to evaluate how to develop a shearing force and

the bending moment on a beam.

The practical purpose of this lab experiment was to measure bending and shear placed upon a

beam. A beam supported in two places with one free end was tested by hanging weights from

different parts of the beam. The reason why this test was performed was to determine shear and

bending action on the beam which were obtained from detectors and calculations.

Description

The experiment was performed to determine the shear and bending moment and how they affect

materials used for specific buildings. This experiment is i...

Review

Anonymous

Return customer, been using sp for a good two years now.

Anonymous

Thanks as always for the good work!

Anonymous

Excellent job

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