# Engineering

## ECM2109 - Structures (2010)

MODULE TITLE CREDIT VALUE Structures 15 ECM2109 Dr Khurram Wadee (Coordinator)
DURATION: TERM 1 2 3
DURATION: WEEKS
DESCRIPTION - summary of the module content
AIMS - intentions of the module
To develop a fuller understanding of the mechanical behaviour of structures and its application to engineering design.
INTENDED LEARNING OUTCOMES (ILOs) (see assessment section below for how ILOs will be assessed)
Note: List A comprises core outcomes that will be covered fully in lectures and must be achieved by all students to meet the minimum university requirement for progression. List B comprises outcomes that are EITHER more difficult to achieve OR are to be achieved by private study (or both). All outcomes will be assessed, and coverage of List B outcomes is essential for both BEng and MEng students. [b]A THRESHOLD LEVEL[/b] Revision of statics and beam theory. Calculation of bending moment, and its relationship to curvature. Derivation of deflections by integration of curvature expressions. Strain energy methods. Asymmetric bending and shear centre. Calculation of Euler buckling loads for struts in compression. Use of the concept of effective length to calculate the buckling load of struts with various end conditions. Calculation of the degree of statical indeterminacy of 2D frames. Use of kinematic boundary conditions in the elastic analysis (bending) of multi-span beams (Macallay's method). Concept of compatibility. Introduction to virtual work (and the unit load method) and its application in the flexibility method for frame structures. Calculation of the degree of kinematic indeterminacy in 2D frames. structures. Introduction to the stiffness methods, setting up the structural stiffness matrix. Calculation of the fully plastic moment for common sections is sturctural members. Plastic collapse of frames; upper bound theorem for the collapse load of a structure. [b]B GOOD TO EXCELLENT[/b] Use of Castigliano's theorem, St Venant's principle; effects of end conditions. Effects of non-uniform sections in the bending of beams. Solution of non-prismatic beams in bending. Establish the effect of initial imperfections on the buckling load of struts. Concept of initial lack of fit in statically indeterminate structures. Use of matrix methods to solve flexibility and stiffness problems. Elasto-plastic analysis of structures. Lower bound theorem for plasticity.
SYLLABUS PLAN - summary of the structure and academic content of the module
This module builds on earlier modules to give students exposure to methods applicable to real structures problems. The methods covered are fundamental to the understanding and the solution of mechanical and civil engineering problems. Furthermore, where appropriate (e.g. in laboratories), students are reminded of health and safety, and a formal risk assessment is presented to them as part of the School's commitment to fostering an awareness of risk issues in engineering.
LEARNING AND TEACHING
LEARNING ACTIVITIES AND TEACHING METHODS (given in hours of study time)
DETAILS OF LEARNING ACTIVITIES AND TEACHING METHODS
ASSESSMENT
FORMATIVE ASSESSMENT - for feedback and development purposes; does not count towards module grade
SUMMATIVE ASSESSMENT (% of credit)
 Coursework Written Exams 100 0
DETAILS OF SUMMATIVE ASSESSMENT
DETAILS OF RE-ASSESSMENT (where required by referral or deferral)
RE-ASSESSMENT NOTES
RESOURCES
INDICATIVE LEARNING RESOURCES - The following list is offered as an indication of the type & level of
information that you are expected to consult. Further guidance will be provided by the Module Convener