CEG8313 : Structural Collapse Dynamics and Multiscale Modelling
- Offered for Year: 2019/20
- Module Leader(s): Dr Enrico Masoero
- Owning School: Engineering
- Teaching Location: Newcastle City Campus
|Semester 1 Credit Value:||10|
To provide the students with the ability to analyse and model the multi-scale processes involved in the nonlinear dynamic response and collapse of structures.
To provide skills for designing and performing simulations of structural collapse and material’s failure.
Earthquakes, explosions, and impacts, are rare hazardous events that induce strongly nonlinear dynamic responses in civil structures, often leading to disproportionate damage and collapse. The dynamic propagation of damage spans multiple length and time scales. Damage nucleates in the microstructure of the materials, spreads to individual structural elements, and eventually propagates to the whole structure. The traditional approach to safety in design is inappropriate to deal with such complex, multi-scale dynamics. Therefore new design concepts have been introduced in the last decades, which include analyses based on energy conservation and, more recently, fully nonlinear dynamic computer simulations.
The theoretical foundations of simulations based on the Discrete Element Method will be taught in this module. Emphasis will be put on the role of interactions between discrete elements at different scales (atoms, nanoparticles, granular matter, and buildings). This will provide a common ground to both introduce some modern approaches to collapse-resistant design, and to model the micromechanical behaviour of materials subjected to stress and thermal actions.
Outline Of Syllabus
• Introduction to the multi-scale processes involved in the collapse of structures
• Explicit time integration scheme
• Interaction forces and potentials
• Energy conservation and energy minimization
• Principles of collapse-resistant design
• Application of discrete modelling to problems within a range of different length and time scales (this implies learning and using a computer program to perform simulations of structural collapse and other dynamic systems)
|Scheduled Learning And Teaching Activities||Lecture||20||1:00||20:00||Lectures|
|Guided Independent Study||Assessment preparation and completion||20||0:30||10:00||Exam Preparation|
|Guided Independent Study||Assessment preparation and completion||1||2:00||2:00||Exam (unseen written exam)|
|Scheduled Learning And Teaching Activities||Small group teaching||10||1:00||10:00||Tutorials|
|Guided Independent Study||Independent study||1||58:00||58:00||Includes background reading and reading lecture notes for a full understanding of material.|
Teaching Rationale And Relationship
Lectures will provide the necessary introduction to new concepts and methodologies. The tutorials will consist mainly in implementing several computer models of structures and materials, to then simulate their nonlinear dynamic behaviour. The tutorials provide an ideal environment for discussion and interactive learning, which will effectively put into practice the theoretical concepts introduced during the lectures.
The format of resits will be determined by the Board of Examiners
|Written Examination||120||1||A||100||Unseen written examination: Part A multiple choice and numerical exercises. Part B extended questions.|
Assessment Rationale And Relationship
Part A of the assessment (multiple choice and numerical exercises) will be mainly focused on the theoretical concept transmitted during the course. Part B (extended question) will assess the level of maturity and depth of understanding acquired by the students in relation to the sample problems assigned and partly developed during the tutorials. Overall, the assessment will cover both the theoretical and the applied part of the course content, in line with the proposed Learning Outcomes.