Design method of automotive powertrain mounting system based on vibration and noise limitations of vehicle level

A review on design optimization approaches of coupled-structural acoustic systems

“…Structural-acoustic optimization frequently takes the minimum structural weight as an objective function and the acoustic pressure at the design field points and either the total acoustic radiation pressure of the structures as or the minimum acoustic intervention as an objective while the structural weight as the constraint condition [22]. Zhang et al [46,47] executed the optimal geometric design of the structures to minimize the acoustic pressure at positions and frequencies of interest using the feasible direction method and the acoustic interference characteristics were utilized-based on the 3-D FEM model with the direct method. The aim of work by Wang et al [38] was to apply the robust design method to structural-acoustic systems to appraise the situation the uncertainties in the structural or acoustic parameters.…”

Contribution to research of thermal loads in commercial vehicles powertrain mounts

“…In the literature (Igami et al, 2008), (Kennings et al, 2014), (Shanguan et al, 2016), (Simić & Demić, 1992) there are a large number of mathematical models of powertrain mounts, more or less complex. Since the goal of this paper was to compare the thermal loads of the mounts, it was considered necessary to simplify the expressions for the approximation of force in the mounts (for the projections in the direction of X, Y and Z axes).…”

“…The vibrations of the powertrain are also influenced by the vibrations of the vehicle frame, which are incidental (Demić, 1997a), (Demić, 1997b), (Shanguan et al, 2016). Since the complexity of the vehicle spatial model exceeds the scope of this paper, it was considered appropriate not to use frame excitations obtained based on a model but to adopt broadband functions of the exitation in the following form:…”

“…In the literature (Demić, 1990), (Demić, 1997a), (Demić, 1997b), (Demić, 2002), (Demić, 2013), (Simić, 1988), (Simić & Demić, 1992), (Bendat, 1998), (Igami et al, 2008), (Genta, 2003), (Shanguan et al, 2016) there are a number of mathematical-experimental methods for modeling the behavior of the powertrain. In this paper, a freight vehicle from the FAP 1314 production program, (whose scheme of the suspension of the powertrain is shown in Figure 1) was observed and the modeling process was applied based on the principles of classical mechanics (Atkins, 2010), (Pars, 1981).…”

Location of unbalance mass and supporting bearing for different type of balance shaft module

“…However, it also induces an inertia force or moment as a side effect during converting the reciprocating motion of pistons into rotating motion of crankshaft and the exact phenomenon is determined by the type of engine as well as kinematics upon several sub-components of engine system (Heisler, 1998;Stone and Ball, 2004;Serrano et al, 2015;Lui et al, 2015). Several countermeasures were previously proposed to control the excitation from vehicle engine using additional device (Lui et al, 2015;Lin et al, 2017;Shangguan et al, 2016;Hafidi et al, 2010) and balance shaft is one of novel solution among them. Balance shaft module which is generally located under the engine block is aimed for reducing the indispensable but unexpected vibrations as generating equivalent vibrations having an opposite direction (Heisler, 1998;Stone and Ball, 2004).…”