CEN203‐Engineering Structures

Java Python CEN203-Engineering Structures

Department of Civil Engineering

COURSEWORK BRIEFING SHEET

COURSE MODULE (and code): Engineering Structures (CEN203)

ASSIGNMENT TITLE: 2D Frame. Analysis

ASSIGNMENT MARKS: 10 %

Aims:

Students can acquire and demonstrate skills in analysing 2D frame. structures using computer software and manual calculations.

Recommended Reading:

.    Structural Analysis: 7th  Edition in  SI units, R.C. Hibbeler,  SI  conversion by Tan Kiang, Prentice Hall, 2009.

.    Structures: Theory and Analysis, M S Williams and J D Todd, Palgrave Macmillan, 2000.

At the end of this assignment, a student should be able to:

Understand the  importance  of computer  software  and  its  assistance  in  enhancing theoretical knowledge obtained in the classroom.

Exercise – 2D Frame analysis

1. Objectives:

The objectives are to analyse a given 2D frame. structure using ‘software’ (Dr Frame2D), manually calculate based on ‘Moment Distribution’ theory, perform. simple structural analysis calculations, and demonstrate an understanding of structural behaviour.

2. Frame Information:

 

Note:

1.   The section type is Rectangular.

2.   NA shows the bending direction.

3.   In-plane axis is the ‘strong axis’ .

3. Parameter Table:

Please use your student ID to identify the frame. structure and other parameters assigned to you. You must use only this frame. structure for Dr Frame. input and hand calculations.

 

4. Procedure:

4.1. Analyse the frame. by i). Dr Frame2D software & ii). ‘Moment Distribution Method’ .

4.2. Follow steps in 6. Report to carry out calculations and discussions.

5. Submission:

5.1. The original software file in .DRF format should be uploaded to LMO. The report WILL NOT be marked IF the correct software file is NOT uploaded.

5.2. The report should  be  submitted  in  the  standard  format  of  coursework  submission  to LearningMall. Delayed submissions w CEN203‐Engineering Structures ill be subjected to a standard penalty scheme.

Handwritten calculations, figures, and sketches of the report are accepted and encouraged; however, ensure that the content is neat and readable. Marks are deducted for illegible handwriting, drawings, and unclear scanned calculations.

6. Report:

6.1. Content & Introduction.

6.2. Detailed hand-drawn sketch of the frame. showing all the frame's dimensions, loadings, and

support conditions. (DO NOT copy/paste from the briefing sheet).

6.3. Use the ‘Moment Distribution Method ’ to obtain bending moment at joints and supports for given parameters.

6.4. Show separate free-body diagrams for all members and calculate (manually) all the forces

and moments acting on each member.

6.5. Draw the BMD and the SFD on each member and locate their ‘point of contraflexure(s)’, if

any. BMD should be tension positive.

6.6. Compare the values of Bending Moments (BM), Shear Forces (SF), and support reactions by two methods (Dr Frame. Software & Hand calculations).

Answer the following questions using the software results. No calculations are needed.

6.7. Q1:        What is the magnitude and the direction of the SWAY if the support A is changed to a roller support?

6.8. Q2:        Consider the support A as a roller support. Suggest and Explain ONE method to

reduce the magnitude of the SWAY. What is the magnitude of the reduction of the SWAY in this situation? (You cannot change support/loading conditions).

6.9. Conclusion/references.

7. Marking scheme (marked out of 100):

7.1. Introduction, conclusion, references, language, and overall clarity (10/100)

7.2. Frame. Sketch and ‘I’ value calculations (10/100)

7.3. Fixed End Moments (FEM) and Distribution Factors (DF) Calculations (10/100)

7.4. Moment Distribution Table (10/100)

7.5. Free body diagrams (10/100)

7.6. BM, SF, and Reaction calculations (10/100)

7.7. BMD and SFD (10/100)

7.8. BMD and SFD from Dr Frame. (clear images) (10/100)

7.9. Data Comparison Table (10/100) 7.10. Answers to questions (10/100)

Delay penalty is applied as 5% points per working day upto 5 days (25% points maximum)