Dynamic optimization of tracked vehicle power train based on torsional vibration analysis

Fu, Shengping; Li, Shengbo; Luo, Na; Elena, María

doi:10.1177/1687814016647304

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…Dynamic loading is frequently characterized as forced vibration, meaning that the imposed strain is considered a variable [14]. Considering that Granato and Lücke [15] have long shown that forced vibration response is significantly dependent on strain amplitude, it is important to analyze the damping capacity of light alloys in this regime.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes

Carneiro

Grilo²,

Soares³

et al. 2022

Metals

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An A356 alloy is a classic casting light alloy, which is able to be processed into complex geometrical shapes with tailored static and dynamic mechanical properties. As a promising material to reduce fuel and energy consumption in future vehicle designs, there is an interest in understanding the impact of heat treatments on the damping capacity of this alloy. The Granato–Lücke theory is used to detail the forced vibration response in gravity cast A356. It is shown that a solution treatment enhances damping capacity in lower stress states (i.e., strain-independent regime) due to the increase in weak pinning length. However, in high-stress states (i.e., strain-dependent regime), peak-aged (T6) samples display higher damping capacity. This is proposed to be originated by releasing dislocations from weak pinning points, which start bowing in the precipitates that act as strong pinning points. Based on these results, it is shown for the first time that the selection of heat treatments to optimize damping in forced vibration is highly dependent on the expected stress–strain state and must be considered in the design of cast components.

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Section: Introductionmentioning

confidence: 99%

The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes

Carneiro

Grilo²,

Soares³

et al. 2022

Metals

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show abstract

“…Fu et al studied tracked vehicle power train system dynamic optimization based on the system torsional vibration characteristics analysis. 14 Dynamic optimization theory model and program were constructed based on a genetic algorithm. Yuen et al optimized suspension kinematic profiles for handling performance using a 10-DOF vehicle model; 15 a vehicle with 10 DOF incorporating nonlinear damper and suspension kinematic profiles was mathematically modeled.…”

Section: Introductionmentioning

confidence: 99%

The multi-objective optimization of the damaged aircraft trailer based on a dynamic model

Hong

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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A damaged aircraft trailer is an essential piece of airport emergency rescue equipment which is made up of frames and multiple suspensions. As a load-force transferring mechanism, the suspension bears heavy loads which can cause fatigue damage. Therefore, reducing the maximum stress of the suspension is necessary to improve the vehicle performance. Besides, lightweight design should be considered to reduce energy consumption. Thus, lighter suspension which can bear more pressure is the optimization objective of this research. A multi-objective optimization method was carried out to analyze the suspension arm of a damaged aircraft trailer. Firstly, to investigate the dynamic characteristics and the reliability of the damaged aircraft trailer, a detailed three combined damaged aircraft trailers model was built. Based on the flexible-rigid coupled method, dynamic simulation of the damaged aircraft trailer was conducted in MSC.ADAMS. Then a suspension model was established, and the stress under different loads was measured to verify the accuracy of the finite element suspension arm model by experiments. Based on the design of experiment method, the effect of suspension arm parameters were obtained to build the approximate models. Besides, the influences of some effect parameters on optimal objectives were analyzed based on the surface response method. During the optimization process, a nondominated sorting genetic algorithm II was adopted to optimize the mass and stress of the suspension arm. The results show that the mass of the suspension arm is reduced from 146.81 kg to 126.69 kg, which is a reduction of 14%. The maximum von Mises stress is changed from 325 MPa to 297 MPa, which is a decrease of 8.6%. This optimal method can be extended to the overall vehicle, which has an important significance in the whole damaged aircraft trailer characteristics improvement design.

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Torsional vibration analysis of crank train with low friction losses

Drápal¹,

Novotný²

2017

J. vibroeng.

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High level of mechanical efficiency is exacted from internal-combustion engines. The reduction of friction losses of crankshaft main bearings can significantly contribute to the enhancement of this efficiency. For this purpose, an innovative design of a crankshaft is developed. The potential of computational modelling during the development of this innovative crank train is described in the article. The dynamics of the whole crank train is solved by using a multi-body system software, where flexible finite-element bodies along with hydrodynamic bearings are incorporated. Regarding the simulation results, attention is paid to the torsional vibration and its analysis, including concept design of a torsional damper, because a reduction of friction losses is associated with the improvement of torsional vibration in this case.

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Dynamic optimization of tracked vehicle power train based on torsional vibration analysis

Cited by 3 publications

References 14 publications

The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes

The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes

The multi-objective optimization of the damaged aircraft trailer based on a dynamic model

Torsional vibration analysis of crank train with low friction losses

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