12/07 Please send me a list of the members of each review team. ALSO, Homework 8: The mesh for the bracket may exceed the storage capadity of the RISA3D Demonstration Package. Here are some work-arounds. 1) Save often, and when you hit the limit, finish the problem in a single sitting. 2) Recall St.Venant's principal. As we get farther from a location, the local effects are not important. You can make two models: one for each end in which the other end is greatly simplified. You should not change the nodes that receive the loads (or be careful to apply equivalent loads if you do). Then, many of the other nodes can be eliminated (at one end) to make a coarser (or even fictitious) mesh. 3) Build your mesh in two partitions (some nodes must appear in both). Save each in a saparate file. Then load one part, and from the drop-down menus do File>Append to add the second part. Now from the drop-down menus do Tools>Full Model Merge to eliminate duplicate nodes. I suggest you arrrange to get all the loads in one of the parts. 12/04/06 CSTs.txt can be downloaded for a recap of recent lectures on Constant Strain Triangles used for analysis of plane stress and plane strain. ALSO, please resume work on Homework 8 revised as follows: No MATLAB scripts are required. Use RISA 3D (or 2D) available free on line to complete the problems using triangular elements. Experiment as much as you like, and turn in your saved analysis (a .r3d file) using your uic user-name for the file name. Attach it to an email and send to tdranger@uic.edu. Due by Sunday, 12/10/06. Try opening the file. You should be able to detect at least some of your data within the RISA data file format. 12/01/06 You may STOP YOUR WORK on Homework 8. The homework due Friday (yesterday) will be collected (EACH STUDENT BRING 6 COPIES) on Monday. You will be assigned (or choose) teams - the extra copies are for your team-mates. To recap, the assignment was to compose a review question or problem, give the answer or solution, and estimate the time needed for a well prepared student to read, understand, and answer. The total should be not less than 5 minutes for the answers you submit. 12/01/06 Lecture on Friday Dec 1 is cancelled. Visit bulletins later today for updates. 11/30/06 The instructor is not well, Thursday evening at 6:00 pm. Please check bulletins Friday morning to see if class is cancelled. 11/19/06 Homework 7 is due on Tuesday, 11/21/06. Two additional data files have been added and are available for download (hw74data.txt and hw75data.txt). These involve horizontal loads on vertical members, and in general your solution should work for transverse loads on inclined members as well. After getting fixed end reactions for the members, you should rotate the coordinate system and then transfer them to the global forces at the nodes. Discuss in class on Monday. 11/17/06 Homework 7 is due on 11/20/06. Solution to HW6 are available for download. Also, data files hw60data.txt and hw63data.txt now have revised loads to produce more interesting results. 11/01/06 Homework 6 and 7 are assigned, due on 11/10/06 and 11/15/06 respectively. T.A. will make links to the uploaded files hw6.txt and hw7.txt. 10/31/06 Homework due: you were asked in class to re-work the exam. The T.A will collect your work in class on Wednesday, 11/01/06, for grading. 10/24/06 Puzzler: One student has answered that the infinite series 1 +x +x^2/2! +x^3/3! + ... x^n/n! + ... is a function that has itself as its derivative. Try evaluating this series (suggest MATLAB) for x=1, first for a few terms, and by adding terms see if you can recognize a well known constant by observing the convergence. 10/23/06 Outline of future homework is available. Note to T.A.: Please create link to HW_future.txt. 10/20/06 Get2D_Truss_Data.m has been revised to allow typed-in Project Data File Name. 10/19/06 Note to T.A.: QF_Solver.m Get2D_Truss_Data.m for HW5, hw4_solution.m for undergraduate students, and hw4g_main.m hw4g_sub.m for graduate students are uploaded to the web site. Please make links from the homepage so students may download them. 10/18/06 1:00 pm HW5 is revised for clarity. Notes on MATLAB functions included. You can download 'Fixed End Moments' by Fred Wiesinger from link below. 10/18/06 Strong to Weak Lecture Notes Erratum is available. HW5 is due 10/27/06 (Friday). Link to HW5 assignment is restored. 10/15/06 The link to 'hw43data.txt' is restored. Look over the problems at the end of Chapter 4 of text. You shoul be able to solve them (temperature and force-fit effects will not appear in the Midterm exam) 10/14/06 MIDTERM EXAM will be in class on Monday, 10/23/06. Topics will include Weak to Strong Forms and Approximate Solutions using power series, Solution of 2D trusses, Creation of Mesh given a structure, and System Transformations. 10/12/06 12:30 am HW4 is due Wednesday 10/18/06. HW5 is due Monday 10/23/06. hw41data.txt and hw42data.txt are revised with corrected data. Lecture notes (examples of strong to weak form and power series solutions) can be downloaded from home page. 10/05/06 2:10 pm HW4 Assignment and Associated Files are Revised. Please refresh your files and note changes. HW5 is due 10/20/04 9/29/06 Due date for HW3 is changed to Wednesday 10/04/06 Part %10 is deferred to HW4 (not due with HW3). 9/26/06 hw3.txt %6 nd should be nq, and clarification of initial value of Q. 9/23/06 Homework #2 Solution Available now from T.A.: airanm2@uic.edu 9/22/06 Updated HW3 files available from links. All AE=720, some small editorial changes. 9/22/06 Homework #3 is Due 10/02/06 See the homepage download links for the assignment and 3 supporting data files. 9/14/06 Begin reading Chapter 4 of Text.