Lab report Experiment AM1
Experiment AM1.4--Bending moments in a simply supported beam
Student name JunJie Liu Student ID 1512042 Experiment Date 24 Nov 2014 Lab group Mech 7
Introduction
In this lab report we show the basic methods of measuring bending moment at the “cut” assuming only simply supported beam with point loads (showed in figure 1) and illustrate the relationship among bending moment and distance between reaction forces and the cut (a and l in figure 2).
Objectives
1. To calculate bending moment in a simply supported beam at any distance.
2. To calculate bending moment at the “cut” using displayed force (figure 1) times the perpendicular distance between the load cell and the “cut” and see its agreement with the theory.
3. To understand the relationship of bending moment and loading for given set of conditions.
Observations and Results
用不用写过程？
The experiment was done in two parts and the results for individual part are showed below separately.
Part 1
The Experimental Bending moment was obtained by multiply the displayed force and perpendicular distance between load cell and the “cut” (moment arm) and the perpendicular distance between load cell and the “cut” is 0.125m throughout the experiment.
The Load was obtained by multiplying Mass in Kg with gravity (which is 9.81 throughout the experiment).
The Theoretical Bending moment was obtained by substituting calculated loads in table 1 into equation 1 where the respected quantities can be seen in figure 2.
The Percentage Error was calculated by using the difference between Experimental value and Theoretical value divide by Theoretical value and times a hundred.
Part 2
Student name JunJie Liu Student ID 1512042 Experiment Date 24 Nov 2014 Lab group Mech 7
Introduction
In this lab report we show the basic methods of measuring bending moment at the “cut” assuming only simply supported beam with point loads (showed in figure 1) and illustrate the relationship among bending moment and distance between reaction forces and the cut (a and l in figure 2).
Objectives
1. To calculate bending moment in a simply supported beam at any distance.
2. To calculate bending moment at the “cut” using displayed force (figure 1) times the perpendicular distance between the load cell and the “cut” and see its agreement with the theory.
3. To understand the relationship of bending moment and loading for given set of conditions.
Observations and Results
用不用写过程？
The experiment was done in two parts and the results for individual part are showed below separately.
Part 1
The Experimental Bending moment was obtained by multiply the displayed force and perpendicular distance between load cell and the “cut” (moment arm) and the perpendicular distance between load cell and the “cut” is 0.125m throughout the experiment.
The Load was obtained by multiplying Mass in Kg with gravity (which is 9.81 throughout the experiment).
The Theoretical Bending moment was obtained by substituting calculated loads in table 1 into equation 1 where the respected quantities can be seen in figure 2.
The Percentage Error was calculated by using the difference between Experimental value and Theoretical value divide by Theoretical value and times a hundred.
Part 2