A Compact Variable Stiffness and Damping Shock Absorber for Vehicle Suspension

2015 ◽  
Vol 20 (5) ◽  
pp. 2621-2629 ◽  
Author(s):  
Shuaishuai Sun ◽  
Huaxia Deng ◽  
Haiping Du ◽  
Weihua Li ◽  
Jian Yang ◽  
...  
Keyword(s):  
Shock Absorber ◽  
Variable Stiffness ◽  
Vehicle Suspension ◽  
Stiffness And Damping

scholarly journals Experimental testing and modelling of a rotary variable stiffness and damping shock absorber using magnetorheological technology

2019 ◽  
Vol 30 (10) ◽  
pp. 1453-1465 ◽  
Author(s):  
Lei Deng ◽  
Shuaishuai Sun ◽  
Matthew D Christie ◽  
Jian Yang ◽  
Donghong Ning ◽  
...  
Keyword(s):  
Shock Absorber ◽  
Test Bench ◽  
Experimental Testing ◽  
Variable Stiffness ◽  
Test Results ◽  
Test Variable ◽  
Magnetorheological Damping ◽  
In Series ◽  
Variable Damping ◽  
Stiffness And Damping

This article presents a novel rotary shock absorber which combines the abilities of variable stiffness and variable damping by assembling a set of two magnetorheological damping units, one of which being placed in series with a rubber spring. This allows the damping and stiffness to be controlled independently by the internal damping and the external damping units, respectively. A test bench was established to verify the variable stiffness and damping functionality. The experimental results for variable damping test, variable stiffness test and co-working test are presented. At the amplitude of 10° and the frequency 0.5 Hz, increases of 141.6% and 618.1% are obtained for damping and stiffness separately if the corresponding current increased from 0 to 1 A and from 0 to 2 A, respectively. A mathematical model is then developed and verified to predict the changing of the damping and stiffness. The test results and the simulated model confirm the feasibility of the shock absorber with the ability of varying damping and stiffness simultaneously.

scholarly journals Development of a novel variable stiffness and damping magnetorheological fluid damper

2015 ◽  
Vol 24 (8) ◽  
pp. 085021 ◽  
Author(s):  
Shuaishuai Sun ◽  
Jian Yang ◽  
Weihua Li ◽  
Huaxia Deng ◽  
Haiping Du ◽  
...  
Keyword(s):  
Variable Stiffness ◽  
Magnetorheological Fluid ◽  
Magnetorheological Fluid Damper ◽  
Fluid Damper ◽  
Stiffness And Damping

Modelling the Dynamic Behaviour of A Motorcycle Damper

1995 ◽  
Vol 209 (4) ◽  
pp. 249-262 ◽  
Author(s):  
A L Audenino ◽  
G Belingardi
Keyword(s):  
Shock Absorber ◽  
Dynamic Behaviour ◽  
Fluid Dynamic ◽  
Critical Factor ◽  
Physical Models ◽  
Vehicle Suspension ◽  
Shock Absorbers ◽  
Internal Fluid ◽  
Output Force ◽  
Dependent Behaviour

Within the context of vehicle suspension component characterization, that of shock absorbers is one of the more difficult to achieve, yet it is a very critical factor in the prediction of vehicle dynamic behaviour. Strongly non-linear output force functions are always linked to a frequency-dependent behaviour. Using the internal fluid-dynamic phenomenon with respect to a motorcycle shock absorber, different physical models of increasing complexity are presented: using these models it is possible to evaluate the importance of different factors, for example oil compressibility or oil inertia. Comparisons with experimental data confirm the validity of these models

Design and verification of a seat suspension with variable stiffness and damping

2019 ◽  
Vol 28 (6) ◽  
pp. 065015 ◽  
Author(s):  
Huaxia Deng ◽  
Jialei Deng ◽  
Rui Yue ◽  
Guanghui Han ◽  
Jin Zhang ◽  
...  
Keyword(s):  
Variable Stiffness ◽  
Seat Suspension ◽  
Stiffness And Damping

Modeling Compressible Fluid Struts for Active Suspension Development

2004 ◽  
Author(s):  
Xubin Song
Keyword(s):  
Compressible Fluid ◽  
Shock Absorber ◽  
Active Suspension ◽  
Parametric Model ◽  
Simple Equation ◽  
Vehicle Suspension ◽  
Data Sets ◽  
Pressure Data ◽  
Damping Function ◽  
Testing Data

In this paper, a non-parametric model is presented for representing compressible fluid struts (CFS) that are based on silicon fluid. The strut can be properly designed to replace the traditional spring and shock absorber for vehicle suspension application. For this study, the strut does not include damping function so that the analysis focuses on modeling the fluid compressibility of the spring function. The approach is to derive a series of mathematics equations in correspondence to the extracted data sets from the strut testing data. The pressure data can be characterized as dependent on precharge pressure, vibration applied on the strut, and friction existing between sealing and the strut rod surface. Every characteristic is represented by a (group of) simple equation, which is optimized based on characterized data sets, respectively. Finally the model is programmed in SIMULINK and validated by the collected testing data.

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