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Texas A&M University College of Engineering

CVEN 305/301 – MECHANICS OF MATERIALS – 2020b

Posted on July 26, 2021 by Abigail Stason

Lectures and Notes

Note: None of this will make sense without a text. Click here to see which text you need to make sense out of these lectures.

The Lectures are MP4 on Zoom.  A password is given since they sent me one with the file, but I don’t think it is needed.  You can either left-click on the Lecture files and view them or you can download them to your computer and play them from there.  Right click on the file to “Download” it, then “Save Target As” wherever you like, then double click the file name from wherever you saved it.

Please also note that the links below will be blank until we have had the class and generate the materials.

Click below to view the Zoom class lectures

For reference, last year’s videos and notes are posted here.

Class Lecture videos Access
Password if needed
Material covered
Time on video/Covered
Class 1
Wednesday
5/27/20
Zoom Video 0d?F5^o= Class starts 13 minutes into the video.
How to use the syllabus, Statics, axial normal (tension ans compressive) and shear stresses
Class 2
Friday
5/29/20
Zoom Video 9n=Hp0qp Class starts 18 minutes into the video, ends at 83 minutes.
More normal and shear stresses, bolt bearing stresses.
Sigma = stress in an existing structure, Sigma Allowed = the stress permitted by the governing code written by experts on that material.
Equations are used for analysis (what is the stress in an existing structure), to determine the allowed load in an existing structure, or to determine the required size for a planned structure (design).,
Class 3
Monday
6/1/20
Zoom Video 9k.*+R=7
Class 4
Wednesday
6/3/20
Zoom Video 8W*!ug$4 Stresses in pinned bars, tensile, compressive, bearing stresses in bolted connections, stress concentrtions around holes in bars.  Phony quiz 1 (practice only to see how real weekly quizzes and the final will be given.)
Class 5
Friday
6/5/20
Zoom Video 0O.0+=8# Class starts 18 minutes into the video.
Stress strain diagrams. modulud of elasticity, deformation of axially loaded bars
Weekly quiz #1 at end of class.
Class 6
Monday
6/8/20
Zoom Video 7i!L!2@K Stress concentration factors, torsional shearing stresses in circular shafts and pipes.
Class 7
Wednesday
6/10/20
Zoom Video 4F$s&.^* Short review, equations sheets, Solution to our Weekly Quiz #1
Work several example problems, tensile and shear  stresses, axial deflections, thermal deformations, statically indeterminate axially loaded and thermally loaded rods.
Class 8
Friday
6/12/20
Zoom Video 4e%$B^13 Class starts 39 minutes into video
Finding torques in shafts, angles of twist
Class 9
Monday
6/15/20
Zoom Video 3b?jDz5b Torque, stresses, gears
Class 10
Wednesday
6/17/20
Zoom Video 0u=7+Vp7 Short review, 305 equation sheet review, how stresses are distributed in structures due to axial loads, shearing loads, torsional loads, BENDING LOADS, solve for torque in statically indeterminate torsionally loaded bar then determine required size of bar.  Start on bending moments, stresses.
Class 11
Friday
6/19/20
Zoom Video 8z#@*&26 Class starts at 18:30 into video
Composite beams (beams of two different materials)
Class 12
Monday
6/22/20
Zoom Video 5s!e+.=Y How to work various problems similar to homework – examples
Class 13
Wednesday
6/24/20
Zoom Video 1A&O3#r&

Class starts 24 minutes into the video.

Combined stresses:  Axial and bending about both x and y axis.

Class 14
Friday
6/26/20

Zoom Video

Discussion of Quiz 04

5u$3*C*1

5u$3*C*1

Class starts 31 minutes into the video
Biaxial bending, writing equations for bending moments in loaded beams.
Quiz #4 given
Q4 solution discussion starts 1:56 hours into the video
No class
Monday
7/1/20
Zoom died We weren’t supposed to have class anyway, so no problem.
Class 15
Wednesday
7/1/20
Zoom Video 5X^@22?+ Class 15 startded 19 minutes into the video.
Drawing shear and moment diagrams, writing equations for them.
Class 16
Friday
7/3/20
Zoom Video 2U.#p*7T Class 16 starts 21 minutes into the video.
Bending moments, diagrams, equations, stresses.  Quiz #5 given.
Discussion of Quiz #5 starts at 1hr 41 minutes into the lecture.
Class 17
Monday
7/6/20
Zoom Video 9p%!P52R Class 17 starts 31 minutes into the video.
Shearing stresses in beams (NOT BOLTS)
Tau = VQ/It,  How to get Q.
Class 18
Wednesday
7/8/20
Zoom Video 9d++q90r Class starts 25 minutes into the video.
Good examplesof determining Q for use in VQ/ItT
Class 19
Friday
7/10/20
Zoom Video 6i&0&@L% Class starts 1:13;20 in video
Weekly Quiz #6 discussion starts 2:57 in video
Close out determining Q for use in VQ/ItT
Class 20
Monday
7/13/20
Zoom Video 6y*&V@+0

Class starts 19 minutes into the video.

Close out shear stress in beams due to bending, how to get shear stress in the flange.

Principal strsses at a point when given Sigma x, Sigma y, Tau xy = Tau yx.

Class 21
Wednesday
7/15/20
Zoom Video 7J+Nq8F^ Class starts 20 minutes into the video.
Quick review of finding principal shear and normal (tension and compressive) stresses at a point where sigmax, sigmay and tayxy are known from P/A, Mc/I, VQ/It, etc.
Finding principal stresses using Mohr’s Circle, rather than equations..
Class 22
Friday
7/17/20
Zoom Video 3t$+f07. Class starts 44 minutes into the video
Three examples of using Mohr’s circle to find principal stresses
Discussion about the solution to today’s weekly quiz starts at 2hrs, 5minutes
.Class 23
Monday
7/20/20
Zoom Video rem+&!q2  Class starts 28 minutes into the video
Class covers

Brief review of the equations sheet, out of plane shear stresses by equations and Mohr’s circle, stresses in thinwalled cylindricaland spherical pressure vessels, introduction to beam deflections.

Class 24
Wednesday
7/22/20
Zoom Video pw6=!*k! Class starts 22:30 minutes into the video
Beam deflections by direct integration.
Class 25
Friday
7/24/20
Zoom Video t6h6$=== Class starts 25 minutes into the video.
Weekly quiz 08 discussion starts 2:14:00 into the video.
More beam deflections by direct integration for simply loaded beams with continuous equations from end to end of beam. Next, more complex loadings requiring more than one range of equations.
Class 26
Monday
7/27/20
Zoom Video xj6IDu!S Class starts 21 minutes into the video.
Singularity Functions.
Class 27
Wednesday
7/29/20
Zoom Video ?44B8qzV Class starts 20 minutes into the vido, however something went wrong and the video is missing until 34 minuteds into the video, so start there.
Singularity Functions
Class 28
Friday
7/31/20
Zoom Video @Uss5=7L Class starts  minutes into the video.
Columns I NOT ON FINAL EXAM
Friday Weekly exam 09 discussed at end of video
Class 29
Monday
8/3/20
Zoom Video %*q=Zbo4 Class starts  minutes into the video.
Columns II NOT ON FINAL EXAM
FINAL EXAM Final Exam Tuesday Aug 4th, 8am-10am CHECK THIS YOURSELF !!!!!!!!!!!!!

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