# Mechanic of Materials (a short lab)

Anonymous
account_balance_wallet \$10

Question description

remember before u handle this work, this work is so important to me, so i will revise it many times before i turn it in and i will rate u depend on your work quality such as providing correct and full answers and meet all requirements in the attached instructions. Please avoid the Lack of depth in your response.

see the data then complete and answer the attached WORD document fully.

don't forget to graph the data report via Excel ,

Don't forget to provide me with:

1: the excel file including graphs

2: calculations via Excel for

TeacherSethGreg
School: UIUC

Attached.

Mechanics of Materials Laboratory
Dr. M. E. Barkey
Department of Aerospace Engineering and Mechanics
The University of Alabama

M. E. Barkey

1

04/06/18

A. Introduction and Objective
The objectives of this experiment are to compute a stress state for combined loading and
the principal stresses that result from this stress state; measure strains experimentally with
a strain gage rosette; calculate stresses from the measured strains and compute the
principal stresses from the experimental data.
B. Theory

We have studied states of stress from varies types of loads as they are applied
independently on a structure. The formulas for the stresses are summarized below:
o=F

o=

(axial normal stress)

(1)

(longitudinal bending stress)

(2)

(pressure vessel stresses)

(3)

Æ

–My
I

oh =

p r,

oa =

tw

pr
2tw

v =

VQ
It

(transverse shearing stress)

(4)

v =

Tq
Ip

(torsional shearing stress).

(5)

superposition can be applied as long as the system that you are analyzing remains
linear—for our purposes in this class, that means that the material cannot have
initial value.

M. E. Barkey

2

04/06/18

The following steps should be taken to determine the stress state at the point of

1) Make a free-body-diagram to determine the reactions (loads and moments) that
act at the point of interest in the structure.
2) Determine how each reaction contributes to the stress state at the point of interest.

Before these two steps, you can also use statics to simplify the structure by removing
system. Note that forces and moments must be resolved to the centroid of the crosssection of the bar on which you are determining the stress state.

M...

flag Report DMCA
Review

Anonymous
Top quality work from this guy! I'll be back!

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors