# solid mechanics

Topics: Shear stress, Force, Continuum mechanics Pages: 12 (1675 words) Published: February 25, 2014
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Qatar University

Mechanical and Industrial Engineering Department
MECH 223

Solid Mechanics L51
Spring 2013

Term Project

Group no. (6)

T.A: Eng. Salim Mohandes

Group members: Amal Bsaisu201002072
Ola Al-Masri201103017
Samar Nasr201000137

Due Date: 3-6-2013

Abstract:

In this project we were asked to select an object (L shaped), and apply the outcomes of Solid Mechanics course on it. First of all we have formed a group of five students, and then we have decided to choose a street-light found in one of the university internal streets, so we can apply the required objectives that we are asked for. The project’s main objective was to apply different types of stresses and loads on the street-light. The project was accomplished sequentially by applying each topic that has been taken in the class. The calculations’ procedure will be shown in this project document in details.

Introduction:

Objectives:

1. To apply centric loading affecting the base of the shaft from the shaft weight. 2. To apply torsion produced by the wind force, make a reasonable estimate for the force. 3. To apply bending moment created by the force of the wind causing the bending at the bottom of the shaft. 4. To apply eccentric loading caused by the weight of the horizontal object off the shaft centroid. 5. To apply transverse shear generated by the force of the wind. 6. To use stress transformation to obtain principal stresses and maximum shearing stress for two points 90 degrees apart on the base of the shaft.

Abbreviations used in Matlab software:

Symbol
Stands for
d2
Outer diameter
d1
Inner diameter
h
Total height
v
Volume of the vertical part of light
m
Mass of the vertical part of light
f1
Force of the weight (vertical part)
A
Area of the cross section
stress
Centric stress
X1
Distance from force of the weight to the edge of the vertical part (Estimated) x
f2,
Force of the wind
T
Torque caused by wind
c
t1
Shear stress caused by the wind (Torsion)
i
Moment of inertia
f3
Force of the weight on the horizontal part (Estimated)
moment1
The total force of the weight multiplied by x (causes eccentric bending)...