Analysis of Structures I
The course aims to provide the knowledge of fundamental structural analysis methods and to to further develop the students'''''''' ability to reason, think and to apply them to solve statically indeterminate structures, establishing the basis for the finite element method and of the thin plates using classical methods.
By the completion of this course the students should be able to:
Formulate the flexibility and stiffness matrices of truss, beam and frame elements and of the plate problems.
Perform linear analysis of the reticulated hyperstatic structures (manually) to calculate displacements, reactions and internal stresses subject to various combinations of loading conditions (applied loads, temperature effects or foundation settlement) and to build compatible and statically admissible solutions in slabs.
Understand how the principles of virtual work relate to the force and direct stiffness method of structural analysis.
Model a structure with elastic supports, inclined supports, or member end releases (hinges).
Develop the ability to make engineering judgment about structural behaviors.
Corneliu Cismasiu, Ildi Cismasiu
Weekly - 4
Total - 70
Basic knowledge of Strenght of Materials I and II
1. A. Ghali, A. M. Neville and T.G. Brown. Structural Analysis. A unified classical and matrix approach. E & FN Spon, 6th edition, 2009
2. J.A. Teixeira de Freitas e Carlos Tiago, Análise elástica de estruturas reticuladas, IST, Lisboa, 2010.
3. C. Cismasiu, I. Cismasiu Apontamentos das aulas teóricas (disponíveis na página da disciplina)
1. Kenneth M. Leet and Chia-Ming Uang and Anne M. Gilbert. Fundamentals of Structural Analysis. McGraw Hill, 3rd ed. 2008
2. R. C. Hibbeler. Structural Analysis. Prentice Hall, 5th edition, 2001
3. W. McGuire, R. H. Gallagher, and R. D. Ziemian.Matrix structural analysis. John Wiley & Sons, Inc., 2nd edition, 2000
4. T. R. G. Smith. Linear Analysis of Frameworks. Ellis Horwood Series in Engineering Science. Prentice Hall Europe, 1983.
The teaching methods are based on student-centered teaching approach, theoretical -practical
classes and continuos evaluation process.
The theoretical-practical clasees introduce the fundamental concepts of the curricular unit related to each topic followed by simple practical example, complemented b solving a larger set of problems involving a reduced complexity that can be manually solved. The further objective of the working classes to give a more practical insight about theoretical concepts and encourage the students'''''''' initiative and their active participation. Individual work, outside of the presencial classes, will be stimulated, by the resolution of a set problems.
Analysis and problem-solving skills are assessed continuously during the practical classes and through unseen written examinations.
Assessment Method (2021-2022)
The assessment methods of the course are in accordance with the current Assessment Regulations.
Analysis and problem-solving skills are assessed continuously during the classes and through three unseen written examinations corresponding to the three modules of the curricular unit.
1. Theoretical and practical evaluation:
For the theoretical and practical evaluation the subject matter will be divided into three parts (parts A, B and C). The different parts correspond, to the logical division of the content.
Test 1 (NA – 6.5 val) - (aprox. 1.5 hours): Part A: Force Method and Symmetry
Test 2(NB – 7.0 val)- (aprox. 1.5 hours): Part B: Displacment Method and Symmetry
Test 3 (NC – 6.5 val) - (aprox. 1.5 hours) : Part C: - Theory of Plates
2. Summative assessment:
The MTP grade of the summative assessment will be obtained on written resolution of various problems during the class, the attendance of students and the appreciation of the teacher.
Students who have special regulated status (TE, AAC, DA, etc.) must take a test to obtain the MTP summative grade on a scheduled date.
The frequency will be obtained in accordance with Article 6 of the Evaluation Regulation. To obtain frequency you need to have: attendance in at least 2/3 of classes
Frequency waiver will be granted in regulated special cases (TE, AAC, DA, etc.).
4. Final Classification
NFinal = 0.9xNE + 0.19xMTP ≥ 9.5 and NE ≥ 7.5
The NE grade is computed as:
- Normal assessment: NE = NA + NB + NC ≥ 7.5 (scale 0 a 20)
- Complementary assessment: Exame de Recurso: NE ≥ 7.5 is the written exame grade (scale 0 a 20)
5. Important Notes
Students with a final grade higher than 16 will have to take an oral exam to confirm the grade. In this case, the student''''''''s classification will be the oral exam classification. If not, the final grade will be 16 values.
Registration for continuous assessment tests is required, otherwise the rules of Article 5 (10) of the current assessment rules apply.
6. Examination Dates
Test 1 - xx de Outubro de 2021
Test 2 - xx de Novembro de 2021
Test 3 - xx de Dezembro de 2021
1. Introduction to Structural Analysis.
Symmetric structures subjected to general loading
3. Force Method
Structural indeterminacy. Released structure
Description of the method. Revison of pincipals of complementary virtual work. Flexibility matrix.
Analysis for different loading conditions
4. Displacement Method
Fundamental solutions of bars and beams
Kinematic indeterminacy. Kinematic ally determinate structure
Description of the method. Direct formulation.
Revison of pincipals of complementary virtual work. Alternative definition of the stiffness matrix
Analysis for different loading conditions
5. Comparison of Force and Displacement Methods
Duality between the force method and the displacement method
5. Theory of Plates
Introduction to the linear elastic anlysis of thin (Kirchhoff) plates
Fundamental relations, Lagrange equations and boundary conditions
Some analytical solutions (Navier, Lévy, cylindrical flexion)
Analysis of the plates by simplified methods