ME350B Lab 4 Shear and Bending Moment Mechanics of Materials Assignment

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Question Description

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.

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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) (%) Scanned with CamScanner Scanned with CamScanner Scanned with CamScanner Scanned with CamScanner ...
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School: UC Berkeley

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Running head: Shear and bending moment lab report

Shear and bending moment lab report
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Shear and bending moment lab report
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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
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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...

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