LECTURES - NEW SEMESTER Summer 2021b

 

CVEN 305/301 (10402)

MECHANICS OF MATERIALS
LECTURES AND NOTES - 2021b (Summer 2021)

MWF 8:00 am - 9:10 am

06/01/2021 to 08/11/2021 


The Lectures are MP4 on Zoom.  A password is given since they ssent me one with the file, but I'm not sure they are needed. 

 

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

 

Class Material covered if we can stick to the schedule.
Time on video/Covered.
Class start times are for last semester and will be updated when known.
 
Class 1
Wednesday
6/2/21
Class 01 starts 12:36 minutes into the video. 
How to use the syllabus, Statics, axial normal (tension ans compressive) and shear stresses

Class notes 01 but SEE VIDEO below for use

https://tamu.zoom.us/rec/share/X5UjgvwJBeywVpeNT0VS7wzSTMhe8HuYO8ByX5VwpKLXPxW5gPcLCIvirtIlvcjp.LAt8PIl1xIuNsIcy

Access Password:     PBmn=T6.
Class 2
Friday
6/04/21
Class 02 starts 1 hour 5 minutes into the video.
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 with a code load on it), to determine the allowed load in an existing structure, or to determine the required size for a planned structure (design).,


Class notes 02 but SEE VIDEO below for use

https://tamu.zoom.us/rec/share/2Vj-eEJ8vwsM9wyOvnne1J0_l1jABqEUM5QGpCSi5Qg8jlG6Ft_YCxHNHK1mP6sF.sHbtgniao0PRK7Cj

Access Password: RVZ6*!*^
 
Class 3
Monday
6/7/21

Class 03 starts 14 minutes into the video.
Class 03 axial stress in rod at angle, Factor of safety yield stress strain

Class notes 03 but SEE VIDEO below for use

https://tamu.zoom.us/rec/share/O6Hg1rA3w0mHjYll-mW_XWblgdSsnRyXCZmyrK0BMLb35Hpwsg5H2IRvQVLK26ke.YWFBkcc7ghKZBsh-

Access Password:      ^R6Mb2s*
Class 4
Wednesday
6/9/21

 Class 04 starts 53 mins into the video
Stress strain deformation stress concentratios fatigue, Stresses in pinned bars, tensile, compressive, bearing stresses in bolted connections, stress concentrtions around holes in bars and plates and torsional shafts and rctangular bars. 

Class notes 04 but SEE VIDEO below for use

https://tamu.zoom.us/rec/share/t6jOspZa-hSjgsMFycAzaGoZ6NjiyQ66C5pzfgcnTawiUbAC6voe1t29AYI4JfpD.GfLXc2Yng4q2Ko4_

Access Password:      p?mDW^0M

EXTRA
Thursday
6/10/21

Zoom solution to Problem 2 on Weekly Quiz #2 (quiz 3)

https://tamu.zoom.us/rec/share/5FOiZDEpb8vJT5YmzX-cChwZdsY-RZPf_X3KNPBSpd7iizejNTrufs8-vAfI59Wu.66E105TdFyUXBFU2

Access Password:      E*a@EWw9
Class 5
Friday
6/11/21

Class 05 Starts 18 minutes into the video.  ENDS at 46 minutes.  The rest is blank, students taking exam.  I tried to cut out just the classso it may start at zero.
6/11/21 - Statically INDETERMINATE structures

Class notes 05 but SEE VIDEO below for use

 https://tamu.zoom.us/rec/share/0a_rNDHiHB0jTEqWslyyLSg4Z0qPWcJMhOfshVmyeoPR1Eu1OJRGUBTmFYiBEpvp.R3_eUo0P1TlfC10s

Access Password:      7n7AB0n^


Weekly quiz #1 at end of class.
Class 6
Monday
6/14/21

LECTURE 6 starts at 10 mins into the video, Statically indeterminate structures, Stress concentration factors, Poission's ratio, quit at torsion

6/14/2021      Class notes 06 but SEE VIDEO below for use


https://tamu.zoom.us/rec/share/hXuy7VbPybNJ_3tZz8mre63LJE6v8M6EvnJN4PAB0qUuju5xWqhWi-5H1JDHVL_5.NdvLvaBQT3G8Q3ZI

Access Password:      7MkL=6bP
 

Class 7
Wednesday
6/16/21

Lecture 7 starts at 50 mins into the video.  Torsional stresses and deformations.

Class notes 07 but SEE VIDEO below for use

https://tamu.zoom.us/rec/share/RpcAIEDd7tf07FJmxs-JOXnVbVkS0gsA-wyeWPEn0sute5f9hTn_mJsjMUtZoqSj.kjr3_pHyhoXbB_c7

Access Password: 5p^pJgM$
Class 8
Friday
6/18/21

Lecture 8
No class was held on Juneteenth.

Class 9
Monday
6/21/21

Lecture 9 Torsion moments inside circular or hollow shafts, description of tables for E, G, WF, etc.   

Class notes 09 

https://tamu.zoom.us/rec/share/Z2EamBnGRW5dPAAmIcztbew4Ny-roBZ-2I5pbAh73JsMMi2naaN9ZnCemP4n334_.focwZgSss-V9dA1D

Access Password:      ?P5SCwP0

Lecture 9a - last half of Lecture 9  but SEE VIDEO below for use

https://tamu.zoom.us/rec/share/dRYKceoNQOYSIoJlc2cTbfjZd1P1TmME0NbyGZAf661tk4TtXclkF-1eALtQsT7I.LcO3UT_tfHheYGV2

Access Password:     THJ#0iu3
 
Class 10
Wednesday
6/23/21

Lecture 10 - Lecture starts 29 minutes into the video -  Statically indeterminate torsion shafts.

Class notes 10

https://tamu.zoom.us/rec/share/hR7HwnWyxlQ1gd0JciNimjpJh0mQTZi7U0anWztRjj6LG5G4eoHMpH2NRVMX0DcU.2WgWuHd51NvxERtL

Access Password:      ND.30v%f


OLD!!!  
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
6/25/21

OLD!!!  
 Class starts at 18:30 into video
Composite beams (beams of two different materials)
Class 12
Monday
6/28/21

OLD!!!  
How to work various problems similar to homework - examples
Class 13
Wednesday
6/30/21

OLD!!!  
Class starts 24 minutes into the video.

Combined stresses:  Axial and bending about both x and y axis.
Class 14
Friday
7/2/21

OLD!!!  
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
7/1/21

OLD!!!  
We weren't supposed to have class anyway, so no problem.
Class 15
Wednesday
7/7/21

OLD!!!  
Class 15 startded 19 minutes into the video.
Drawing shear and moment diagrams, writing equations for them.
Class 16
Friday
7/9/21

OLD!!!  
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
7/12/21

OLD!!!  
Class 17 starts 31 minutes into the video.
Shearing stresses in beams (NOT for BOLTS)
Tau = VQ/It,  How to get Q.
Class 18
Wednesday
7/14/21

OLD!!!  
Class starts 25 minutes into the video.
Good examplesof determining Q for use in VQ/It
Class 19
Friday
7/16/21

OLD!!!  
Class starts 1:13;20 in video
Weekly Quiz #6 discussion starts 2:57 in video
Close out determining Q for use in VQ/It
Class 20
Monday
7/19/21

OLD!!!  

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
7/21/21

OLD!!!  

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
7/23/21

 

OLD!!!  

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
7/26/21

 

OLD!!!  

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
7/28/21

OLD!!!  

Class starts 22:30 minutes into the video
Beam deflections by direct integration.
Class 25
Friday
7/30/21

OLD!!!  

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
8/2/21

 

OLD!!!  

Class starts 21 minutes into the video.
Singularity Functions. 

 

Class 27
Wednesday
8/4/21

OLD!!!  

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
8/6/21

OLD!!!  
Class starts  minutes into the video.
Columns I NOT ON FINAL EXAM
Friday Weekly exam 09 discussed at end of video
Class 29
Monday
8/9/21

OLD!!!  

Class starts  minutes into the video.
Columns II NOT ON FINAL EXAM
FINAL EXAM
Tuesday
8/10/21
8-19am

OLD!!!  

Final Exam  CHECK THIS YOURSELF !!!!!!!!!!!!!