Iris Publishers Journal Of Engineering Sciences

  Influence of Green Terraces in Evaluating the Action of Wind on Buildings Authored by Isopescu Dorina Nicolina The development of the construction sector, as a result of the special emphasis of recent years in the implementation of the principles of sustainability, has included various directions: from structural certification of environmentally friendly materials in terms of their durability and carbon dioxide emissions, and the innovation of building systems respecting the energy efficiency principles requirements, until to the innovation of the shape and volume concepts of buildings. All over the world there are recognized examples of nature-friendly architecture. The complexity of sustainable development in construction is increasingly becoming cross-cutting research, which covers the integrated techniques of materials science, building physics, with the circular economy, and with plant science. This challenge offers new opportunities for buildings to become less polluting a...

Numerical Computation of Separation Events Authored by Kevin Murphy Impacting systems possess stiffness discontinuities (nonlinearities) and integrating the system through these abrupt transitions in stiffness is numerically challenging. Henon’s method [1] for identifying numerically the instant of impact - and the associated values of the state variables - is well established. However, in cases where distinct components move together, there is not a well-developed technique for identifying when they separate because this separation event is not expressed in terms of the generalized coordinates. This work presents a numerical technique for doing just that. If one couples this method with Henon’s method, the time response of a system undergoing repeated impacts and separations may be obtained with a high degree of precision. Several specific examples are presented to demonstrate the utility of the method. Impact oscillators give rise to nonlinear behavior through the abrupt, impulsiv...

Nuclear Detonation Radiative Heat Effects on Contemporary Building Structure Authored by Danladi Slim Matawal Introduction The growing number of studies on the impact of COVID-19 is often chosen in the context of developed countries, highlighting a gap in the understanding of how the pandemic is impacting developing countries. There is need to acknowledge the effect/ impact on transportation in emerging economies where lockdowns and restrictions on movement may not be wholly ineffective but even more suited to the level of psychological response of the people. There is not just poor transportation infrastructure but also lack of a clearly defined transportation system that is effectively managed and regulated by operators while the economy is largely informal. The outbreak of the COVID-19 coronavirus was deemed a pandemic by the World Health Organization (WHO) on 11th March 2020. To date, there have been cases confirmed in at least 203 countries, areas or territories, causing unprec...