contributor author | Dolatabadi, N. | |
contributor author | Theodossiades, S. | |
contributor author | Rothberg, S. J. | |
date accessioned | 2019-02-28T11:11:41Z | |
date available | 2019-02-28T11:11:41Z | |
date copyright | 7/26/2018 12:00:00 AM | |
date issued | 2018 | |
identifier issn | 1555-1415 | |
identifier other | cnd_013_09_090910.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4253681 | |
description abstract | Piston impacts against the cylinder liner are the most significant sources of mechanical noise in internal combustion (IC) engines. Traditionally, the severity of impacts is reduced through the modification of physical and geometrical characteristics of components in the piston assembly. These methods effectively reduce power losses at certain engine operating conditions. Frictional losses and piston impact noise are inversely proportional. Hence, the reduction in power loss leads to louder piston impact noise. An alternative method that is robust to fluctuations in the engine operating conditions is anticipated to improve the engine's noise, vibration and harshness (NVH) performance, while exacerbation in power loss remains within the limits of conventional methods. The concept of targeted energy transfer (TET) through the use of nonlinear energy sink (NES) is relatively new and its application in automotive powertrains has not been demonstrated yet. In this paper, a TET device is conceptually designed and optimized through a series of parametric studies. The dynamic response and power loss of a piston model equipped with this nonlinear energy sink is investigated. Numerical studies have shown a potential in reducing the severity of impact dynamics by controlling the piston's secondary motion. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Design Optimization Study of a Nonlinear Energy Absorber for Internal Combustion Engine Pistons | |
type | Journal Paper | |
journal volume | 13 | |
journal issue | 9 | |
journal title | Journal of Computational and Nonlinear Dynamics | |
identifier doi | 10.1115/1.4040239 | |
journal fristpage | 90910 | |
journal lastpage | 090910-12 | |
tree | Journal of Computational and Nonlinear Dynamics:;2018:;volume( 013 ):;issue: 009 | |
contenttype | Fulltext | |