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Structrual mechanics B03327
Content:
Statically determinate rod systems - cross-section forces, influence lines. Static analysis of indeterminate systems - Flexibility Method, Direct Stiffness Method, Moment Distribution Method. Influence lines of internal forces and displacements in indeterminate systems. Stability of rod systems. Determination of critical loads. The theory of second order. Dynamics of the rod with a finite number of degrees of freedom.
Learning outcomes:
The student identifies and describes the work of rod system structures, the behavior of the structure in terms of statics, dynamics and stability, solves simple and more complex structures using the Flexibility Method, Direct Stiffness Method, Moment Distribution Method, uses influence lines to determine the value of cross-section forces, support reactions and displacements in determinate and indeterminate systems
(in Polish) Rodzaj przedmiotu
Course coordinators
Learning outcomes
EK1 identifies and describes the work of rod systems (K_W05)
EK2 identifies and describes the behavior of the structure in terms of statics, dynamics and stability (K_W06, K_U12)
EK3 solves simple and more complex structures using the method forces the rod (K_U10, K_U11)
EK4 solve simple and complex structures using the Flexibility Method, Direct Stiffness Method, Moment Distribution Method (K_U10, K_U11)
EK5 uses influence lines to determine the value of the internal forces, support reactions and displacements in determinate and indeterminate systems (K_U11)
EK6 justify the proposed solution of calculated structures (K_K01, K_K07)
Assessment criteria
EXAM
Admission to the exam is subject to a minimum of satisfactory completion of the auditory class and design project.
The exam consists of two written parts: the task part and the theoretical part.
Task:
- You must solve 2 tasks from 3 presented to choose, for each task you can gain up to 30 points, it is up to 60 points.
Theoretical part:
- consists of 4 questions from 36 questions and 1 from 8 questions, max. 8 points for each question - you can get up to 40 points in total. No answer to the last question (1 out of 8) results in failing the exam.
Total score on the exam: 100pkt.
To pass the exam is to earn more than 50% of the exam score or more than 50% of the points (in total) from the exam and bonus points.
Bonus points:
This is the sum of the points earned of the tests on the auditory classes (multiplied by the correction coefficient 1.4) and the sum of the points earned on the design exercises (multiplied by the correction factor of 0.6).
Bonus points are added to the points earned during the exam. The total score determines the final score, according to the score below.
Bonus points can not be obtained by a person who:
- they passed the auditory classes afer the test No. 5,
- had more than 3 absences (justified and unjustified);
- they gave any project after the deadline,
- received less than 30.0 points from the project.
Passing the exam without bonus points:
Rating 5.0 - (90.5-100.0pts)
Rating 4.5 - (80.5-90.0pts)
Rating 4.0 - (70.5-80.0pts)
Rating 3.5 - (60.5-70.0pts)
Rating 3.0 - (50.5-60.0pts)
Passing the exam with bonus points
* only tasks and bonus points
Rating 5.0 - (145.1-160.0pts)
Rating 4.5 - (130.1-145.0pts)
Rating 4.0 - (115.1-130.0pts)
Rating 3.5 - (100.1-115.0pts)
* Tasks, theory and bonus points
Rating 5.0 - (180.1-200.0pts)
Rating 4.5 - (160.1-180.0pts)
Rating 4.0 - (140.1-160.0pts)
Rating 3.5 - (120.1-140.0pts)
Rating 3.0 - (100.1-120.0pts)
AUDITORY CLASSES
Conditional credit is the writing of four colloquia and obtaining the appropriate number of points.
The colloquium can be obtained as follows:
Colloquium no. 1 - 12 pts
Colloquium no. 2 - 14 pts
Colloquium no. 3 - 13 pts
Colloquium no. 4 - 11 pts
The final score is based on the number of points earned:
Rating 5.0 - (45.5-50.0pts)
Rating 4.5 - (40.5-45.0pts)
Rating 4.0 - (35.5-40.0pts)
Rating 3.5 - (30.5-35.0pts)
Rating 3.0 - (25.5-30.0pts)
Terms of the individual tests (depending on the group):
Test # 1: (4 classes)
Test # 2: (8 classes)
Test # 3: (11 classes)
Test # 4: (14 classes)
Each test can only be corrected once. Declaration of improvement is binding. To calculate the final number of points from the exercises, the points obtained from the improvement are taken into account, and for persons who have abandoned the improvement, points are taken from the first approach.
Deadlines for correction tests (depending on the group):
Lecture # 1: (6 weeks).
Lecture # 2: (10 weeks)
Lecture # 3: (13 weeks)
Lecture 4: (15 classes)
Lecture # 5: (last day of semester) *
*) an additional test consisting of 4 tasks (one from each previous test) will be written by declared persons who received less then 25.5pts but more then 14.5pts.
DESIGN PROJECT
The conditional credit is to perform four design tasks, to obtain the required number of points and to defend the completed projects.
During the design project classes the number of points can be obtain respectively:
- work during the classes (2-13 weeks) - 1.5pts (max. 18.0pts),
- evaluation of the projects (projects No. 1 / nr 2 / nr 3A / nr 3B) - 8.0pts (max. 32.0pts).
Maximum final score is based on the number of earned points and the defense of the completed projects:
Rating 5.0 - (47.5-5.00pts)
Rating 4.5 - (43.0-47.0pts)
Rating 4.0 - (38.0-42.5pts)
Rating 3.5 - (33.0-37.5pts)
Rating 3.0 - (30.0-32.5pts)
The final mark could be lower than results from the obtained points obtained if the student is not able to demonstrate satisfactory knowledge of the issues involved in the project.
Teacher may exempt the student from defense of passing project under the condition the student obtains at least 6.0pts from the appropriate colloquium.
Points for work in classes can be earned by taking part in the classes and activity over the project task. Each absence causes the lost of the possible. Works can be done with another group (with any teacher in agreement with the teacher providing the proper project group).
Deadlines of individual project tasks:
Project No 1: beginning of 5 classes
Project No. 2: beginning of 9 classes
Project No. 3A: beginning of 12 classes
Project No 3B: end of 14 classes
In the case of giving any project after the specified time or obtaining fewer points than 30.0, the student obtains the final grade only on the basis of the defense of all the projects and shows the ability to solve tasks with a difficulty level not higher than that performed in the defended projects.
Bibliography
a) basic:
-Dyląg Z., Krzemińska-Niemiec E., Filip F.: Mechanika budowli t.1. PWN, Warszawa 1989.
-Krętowska J. Baszeń M.: Mechanika budowli w przykładach: Płaskie układy prętowe z nadliczbowymi więzami; Metoda sił. Wydawnictwo Politechniki Białostockiej 2008.
-Dyląg Z. Krętowska J.: Mechanika budowli w przykładach: Płaskie układy prętowe z nadliczbowymi więzami; Metoda przemieszczeń; Metoda Crossa. Wydawnictwo Politechniki Białostockiej, Białystok 2008.
b) supplementary:
-Praca zbiorowa: Mechanika budowli z elementami ujęcia komputerowego (t.I + t.II). Arkady, Warszawa 1984.
-Cywiński Z.: Mechanika budowli w zadaniach, t.1: Układy statycznie wyznaczalne; t.2: Podstawy układów statycznie niewyznaczalnych. PWN, Warszawa-Poznań, 1976.
-Rakowski J.: Mechanika budowli - zadania, cz.I, Wydawnictwo Politechniki Poznańskiej, Poznań 2007.
-Carpintieri A.: Structural mechanics: a unified approach. Taylor & Francis, Milton Park, Abingdon, Oxon 1997 (digital version 2006).