Author:Snedden, Glen C; Roos, TH; Naidoo, KavendraDate:Sep 2003Previous simulations of a turbojet disc cavity with full Navier-Stokes CFD and simplified geometry and boundary conditions have been improved to reduce the level of approximation. A new grid was built using a multi-block approach. The case ...Read more
Author:Loveday, Philip WDate:Jan 2006Piezoelectric patch actuators are employed for monitoring the health of structures and for performing active control of vibration. When the structure is long, slender and has constant cross-section, such as a pipe, rail or rod, it can be ...Read more
Author:Marwala, T; Sibisi, SDate:Jan 2005Finite element (FE) models are widely used to predict the dynamic characteristics of aerospace structures. These models often give results that differ from measured results and therefore need to be updated to match measured results. Some of ...Read more
Author:Maina, JW; Denneman, E; De Beer, MorrisDate:Jul 2008Pavement response modelling based on the theory of linear elasticity was introduced in South Africa in the late 1960's and early 1970's. Since that time, continuous developments took place, and today it is possible to determine the stress / ...Read more
Author:Loveday, Philip W; Long, Craig SDate:Mar 2007Piezoelectric transducers are commonly used to excite waves in elastic waveguides such as pipes, rock bolts and rails. While it is possible to simulate the operation of these transducers attached to the waveguide, in the time domain, using ...Read more