EN31: Mechanics of Solids and Structures
Announcements
- 12/21/2007: Final exam solutions are now posted. Click the Exams page above.
- 12/20/2007: You can pick up your final exam from Prof. Guduru's office. Your course grade is marked on the front page of the exam.
- 12/20/2007: You can pick up your lab reports and design project reports from the box outside Prof. Guduru's office.
- 12/06/2007: FINAL EXAM: You are allowed to bring your class notes, homework, homework solutions from the course website, the textbook and calculators. Although the exam is scheduled 9 am - noon on Dec 13, 2007, you can come in and start an hour early at 8am and stay an hour late until 1pm. Check BannerWeb for exam location.
- 12/06/2007:Design Project: The sign up sheet for final design testing and evaluation is now posted outside Chris bull's office (on the blackboard). It will be on Monday Dec 10th, from 8 am to 5:00 pm. Each team will be given 50 minutes for their demonstration. Please reserve a slot ASAP.
- 12/06/2007: Solution for Homework #11 is now posted.
- 12/05/2007: There will be a final review on Wednesday, 12/12/2007, 9:00 - 9:50am, the day before the final exam.
- 12/05/2007: The sections on 12/06/2007 will be devoted for review. Come prepared with questions and problems you want to discuss.
- 11/27/2007: Solution for Homework #10 is now posted.
- Design Project: The sign up sheet for doing test runs on the shake table is posted outside Chris Bull's office. Each group can reserve a 1/2 hr slot at any time to avoid conflicts with others.
- 11/19/2007: The Lab2 reports are due before noon, 21st Nov (Wednesday). Please submit them in the drop box outside room number 348/350.
- 11/13/2007: Solution for Homework #9 is now posted.
- 11/13/2007: Due to logistical issues, all design teams must have 5 members. If you have fewer than 5, please add more members to make it 5. If not, your team will be assigned new members by Prof. Guduru.
- 11/10/2007: The Lab2 sign-up sheet is posted outside room number 348/350 of B and H. If you haven't reserved a slot yet, do it ASAP.
- 11/07/2007: Solution for Homework #8 is now posted.
- 11/02/2007: Sunil Mandowara would not be holding office hours between 11/05/07-11/16/07 because of the lab. Prof. Guduru will be holding office hours in his place (Mon 1-2pm and Tue 12-1pm).
- 11/01/2007: Solution for Homework #7 is now posted.
- 10/30/2007: Lab # 2 report is due on or before Wednesday, Nov 21, noon.
- 10/30/2007: The sign up sheet for 'Lab 2 : Measurement of strain in an Aluminum beverage can is now posted outside room number 348/350 of B and H. Please reserve a slot as soon as you can. The labs are due to begin next Monday (5th November).
- 10/25/2007: Solution for Homework #6 is now posted.
- 10/24/2007: Midterm score distribution.
- 10/23/2007: Homework # 7 is now posted.
- 10/23/2007: Click here for midterm solutions.
- 10/23/2007: TA hours of Xinghua Shi for today are postponed to 3:30 pm.
- 10/19/2007: Solution for Homework #5 is now posted.
- 10/17/2007: For the Lab 1 each student has to do their own analysis and submit individual report. There are no group submissions. The lab 1 reports are due on 22nd October (Monday) by 4:00 PM in the drop box outside room number 348/350.
- 10/15/2007: Graded HW # 4 can be picked up from the box outside Prof. Guduru's office.
- 10/15/2007: Tuesday's review session will be held in RM 158 B&H from 6 to 7pm. Email Jean with questions/topics prior to the review.
- 10/15/2007: Due to the midterm exam, the due date for HW # 5 has been moved to Friday, 10/19/2007, 10 am. HW # 6 will be due on the following Thursday.
- 10/12/2007: Jean will hold an informal review session for the midterm on Tuesday, 10/16 location TBA. Please email with suggested questions/topics prior to review.
- 10/12/2007: A new sample midterm exam and its solutions are now posted. Click the above links.
- 10/12/2007: The midterm exam will be held on Wednesday, Oct 17, 2007. You are allowed to bring your class notes, homework, homework solutions from the course website, any other material in your own writing and calculators. No textbooks. Although the exam will be designed as a one hour exam (3 problems), to minimize any time pressure, you will have almost two hours to complete the exam, 8am - 9:50am. The exam will be held in rooms 155 and 163 B&H.
- 10/10/2007: Please click here for the revised Lab1 report guidelines. It includes a correction for the Vr formula.
- 10/10/2007: There is a jacket in Prof. Guduru's office left behind by a student who stopped by during the office hours. Please pick it up.
- 10/10/2007: The lab reports are now due on 22nd October (Monday), before 4:00 pm. Please submit your report outside room number 348/350 in the drop basket.
- 10/09/2007: The midterm exam will be held on Wednesday, Oct 17, 2007. You are allowed to bring your class notes, homework, homework solutions from the course website, any other material in your writing and calculators. No textbooks. Although the exam will be designed as a one hour exam (3 problems), to minimize any time pressure, you will have almost two hours to complete the exam, 8am - 9:50am. The room numbers will be posted shortly.
- 10/09/2007: Solution for Homework #4 is now posted.
- 10/09/2007: HW # 5 is now posted.
- 10/09/2007: Note: In problem 5.61 (HW # 4), the book answer for the rotation of gear B is incorrect. The correct answer is 0.729o.
- 10/03/2007: Solution for Homework #3 is now posted.
- 10/02/2007: Click here for some useful notes on Error Analysis. You will need it for your lab reports.
- 09/28/2007: The Lab reports for "Lab1: Measurement of Elastic Moduli" are due on October 19th (Friday) before 4:00 PM. Please put them in the drop basket outside room number 348/350 of Barus and Holley.
- 09/27/2007: Yesterday (9/26), there was a brief discussion in the class on materials with negative Poisson's ratio. For those interested in pursuing it further, check out the following web links.
http://silver.neep.wisc.edu/~lakes/Poisson.html http://silver.neep.wisc.edu/~lakes/sci87.html http://en.wikipedia.org/wiki/Auxetics http://www.azom.com/details.asp?ArticleID=168 http://data.bolton.ac.uk/auxnet//action/ http://www.bookofjoe.com/2005/04/negative_poisso.html
- 09/26/2007: Homework # 3 is now posted.
- 09/26/2007: Solution for Homework #2 is now posted.
- 09/24/2007: Lab 1 : Measurement of Elatsic
Moduli
The sign up sheet for the Lab 1 is posted outside room no 348/350 of Barus and Holley. The lab is due to begin this Wednesday (26 th September), please sign up for it ASAP. - 09/24/2007: A hint for problem 1.77 is now posted.
- 09/24/2007: A message from Sara Berglund:
The Science Resource Center is looking for a group tutor to run group study sessions once a week for EN 3. The sessions will be the same format as the HELP sessions for EN 4, 52, and 72 last semester where students work collaboratively with a tutor present to go over concepts and answer questions. For EN 3 we are hoping to focus on building the physics background necessary for EN 3, especially for students who have not taken physics in high school. The tutor would work an average of 2 to 3 hours each week and be paid $12 an hour. If interested please email Sara_Berglund@brown.edu.
- 09/21/2007: Sunil Mandowara would not be holding office hours between 09/24/07-10/05/07 because of the lab. Prof. Guduru will be holding office hours in his place (Mon 1-2pm and Tue 12-1pm).
- 09/20/2007: The sign up sheet for Lab 1 is posted outside room number 348/350 of Barus and holley. Each group consists of maximum 6 students. Please sign up as soon as you can. The last date of signing the sheet is Tuesday, 25th September. The Lab begins from Wednesday,26th September. For questions please email sunil@brown.edu.
- 09/18/2007: Homework # 2 is now posted. Due on 09/25/2007.
- 09/13/2007: Today's sections will be held in the Instructional Computer Lab.
- 09/12/2007: Homework # 1 is now posted. Due on 09/19/2007.
- 09/06/2007: Topics to be covered and course
outcomes.
Mail
any comments or suggestions to
webmaster@en31.engin.brown.edu.