The response of metals to deformation at high temperatures is governed by a complex interplay of mechanisms, all the more so under high strain rate loading. Moreover, the familiar techniques with which microstructure is characterised cannot be used on the microsecond timescales involved in impacts or very high speed deformations. This project will examine the strain rate and temperature dependence of carefully selected Titanium and Nickel alloys, with the final goal of better understanding and modelling their response to high rate and high temperature deformation. This project focuses on the development of predictive numerical modelling capability for design of lightweight composite materials and systems for components of large aircraft gas turbine fan systems threatened by impact loading.
Advanced materials mechanics constitutive relations for large plastic deformations, damage and fracture criteria, explicit finite element methods , impact and energy absorption elastic and plastic impacts, elastic and plastic stress-wave theory, energy absorbing components and systems , penetration mechanics empirical, analytical and numerical methods and blast loading against structures empirical, analytical and numerical methods. The course covers theories for materials and structures subjected to transient dynamic loads such as impact, penetration and explosion. A key part of the course will be devoted to applied use of analytical methods in combination with explicit non-linear finite element analysis for solving this kind of problems. Lectures, guest lectures and case studies. All case studies are required to be given access to the exam.
To provide participants with the necessary background to understand and apply the principles of penetration mechanics to impact problems. Engineers, scientists, and technical managers who are involved in analysis, evaluation, design, research, and development of systems to stop, contain, or enhance the penetration of fragments and penetrators. While there is no formal prerequisite, the course is directed toward personnel with degrees in engineering, the physical sciences, mathematics, or equivalent experience. This course presents and develops the fundamental and underlying principles of penetration mechanics.
The kinematic and puncture data taken from videos are available in the electronic supplementary material. The use of high-speed puncture mechanics for prey capture has been documented across a wide range of organisms, including vertebrates, arthropods, molluscs and cnidarians. These examples span four phyla and seven orders of magnitude difference in size. The commonality of these puncture systems offers an opportunity to explore how organisms at different scales and with different materials, morphologies and kinematics perform the same basic function.