Among various dissipating mechanisms, the viscoelastic effect of rubber material on creation of rolling resistance is responsible for 10-33% dissipation of supplied power at the tire/road interaction surface. So, evaluating this kind of loss is very essential in any analysis concerned with improving the fuel consumption of vehicles and resultantly energy savage. Hysteretic loss is a fraction of...

An anomaly in circuit theory is the disappearance of some of the stored energy when two capacitors, one charged and the other uncharged, are connected together through resistanceless wires. Nonstandard analysis shows that, when the wires are taken to have infinitesimally small but nonzero resistance, the energy dissipated in the wires equals that substantial amount of energy that had disappeare...

Mechanical joints, such as the bolted shear lap joint considered here, are ubiquitous in engineered structures, which realize vibration damping as well as load transfer from them. However, the prediction of the energydissipation characteristics of such joints remains a challenging problem. A cubic relationship between energy dissipated and load magnitude is often assumed in classical joint dyna...

The effects of different variables closed conduit transient partially pressurized flows on the maximum air pressure are investigated from an energy exchange perspective. It was found that when length increases, decreases because a larger portion driving will be stored as kinetic in flow and is dissipated by friction force. In contrast, water depth free-surface dissipating decrease. Thus, absorb...

This paper aims to study the influence of soil-structure interaction on plastic energy demand spectra directly derived from the energy-balance equations of soil-shallow-foundation structure with respect to an ensemble of far-field strong ground motions obtained from Pacific Earthquake Engineering Research (PEER) database and recorded on alluvium soil. The superstructure is modeled as a single-d...

This work presents an approach to introduce significant strain rate sensitivity into metallic metamaterials that are manufactured via additive manufacturing, where the base material employed will typically have a weak sensitivity. Here, we employ friction between rough surfaces as strain-rate dependent mechanism, whose magnitude is tunable by optimizing geometry. The design along with prelimina...

The purpose of brake is to decelerate a vehicle by transforming the kinetic energy of the vehicle to heat via friction and dissipating that heat to the surroundings. As a part of an automobile, brake materials have additional requirements like resistance to corrosion, light weight, long life, low noise, stable friction, low wear rate and acceptable cost versus performance. Selection of the mate...

Fatigue damage is considered to be one of the most critical phenomenon, contributing to the failure of an aircraft structure. Understanding the fatigue mechanism is essential for considering the different technical conditions that influence the fatigue life of structures. In recent years, fatigue tests are accelerated in order to reduce the testing time of materials/structures being developed, ...

The dissipation of energy during the compaction granular materials was studied by performing confined drop tower experiments on Ottawa sand. Energy dissipated due to breakage quantified evaluating creation new surfaces at varying heights. Post-compaction particle size distributions (PSD) were measured and amount position current PSD relative pre-compaction ultimate PSD. Our observations reveale...