Elastokinematics of a rectilinear rear independent suspension

Abstract

The rectilinear rear independent suspension investigated in this paper benefits from its excellent kinematic characteristics. Because of the over-constraints of the rectilinear rear independent suspension as a rigid-flexible coupled multi-body system, its elastokinematics are heavily dependent on the compliance characteristics. This paper proposes an efficient approach to establish its elastokinematic model based on the transfer matrix method. First, the overall system transfer equation of the rectilinear rear independent suspension is established. Then, the statics equation is obtained by introducing external loads and expanding the overall system transfer equation. Different configurations of rubber bushings are discussed with respectg to the natural frequency and the static deflections. Comparisons between numerical simulations and kinematic and compliance tests not only verified the approach but also demonstrated the excellent wheel alignment capacity of the rectilinear rear independent suspension.

Multibody system transfer matrix method: The past, the present, and the future

“…The dynamics design and test levels, as well as dynamics performance of over 150 products, are improved substantially. MSTMM has been applied to various equipment systems, including spin tube gun, 83 self‐propelled artillery, 48 tank, 48 naval gun, 84 metal storm, 49 cannon on helicopter, 85 antiaircraft gun, 86 vehicular multiple launch rocket system, 47 tracked multiple launch rocket system, 87 airborne multiple launch rocket system, 88 shipborne multiple launch rocket system, 48 projectile, 89 feeding platform, 90 and parachute‐submissile 91 ; aeronautics and astronautics: wing, 92 helicopter, 93 aerospace aircraft, 94 launch vehicle, 95 vehicular missile system, 96 missile, 41 and inertial measurement unit system 52 ; ships: underwater towed system, 97 submarine, 98 and ship's antivibration system 99 ; vehicle: vehicle suspension, 100 truck car 101 ; machine tools: heavy duty machine tool, 102 fly‐cutting machine tool, 50 five‐axis CNC machine tool, 103 machine tool spindle, 104 and servo turret 105 ; various civil machineries: road roller, 106 screen vibration, 107 vibration compaction, 108 large‐scale rotary machine, 109 truck crane, 110 overhead crane, 63 mobile concrete truck, 111 buildings, and bridges: floating bridge, 112 super long stay cable, 113 composite Riser system, 114 reinforced thermoplastic pipe, 53 immersed tunnel, 115 earthquake‐resistant civil structures, 116 and high‐pressure gas well 117 ; various turbines: wind turbine, 118 wind turbine tower, 119 low‐pressure rotor of gas turbine, 120 diesel engine,…”

A Method for Finding the Static Equilibrium of the Non-Steered Wheel Suspension Systems Used in Passenger Cars

“…Establishing this position is necessary to assess the behavior of the vehicle in various operating/loading regimes, and to determine the reactions in joints in order to properly size them. Such a problem is approached in the literature mainly using energetic methods, based on the minimum energy potential in the equilibrium position, or by kinetostatic analysis methods, decomposing the suspension mechanism into components and expressing their equilibrium equations [9][10][11][12][13][14][15][16]. The equilibrium position can also be determined by using automatic analysis algorithms, which are integrated in the commercial MBS (Multi-Body Systems) software environments, such as ADAMS, DYMES, or SIMPACK.…”

“…In the situation where by completing the iterative process (15), no solution is identified (as values of the generalized coordinates Z Gs and/or Z Gd ) that satisfies the requirement (16) or (18), as the case may be, the process is resumed from the beginning by modifying the variation step of the generalized coordinate(s) (∆Z Gs/d ), in the sense of reducing it (thus, increasing the accuracy of finding the optimal solution).…”

Method for the quasi-static analysis of beam axle suspension systems used for road vehicles

“…A complex elastokinematic model was developed for the optimal design of a five-rod car suspension in terms of car active safety and ride comfort. 22 The elastokinematic analysis of a rectilinear rear independent suspension model was approached in Liu et al 23 by using the transfer matrix method. In this case, the statics equation was obtained by introducing external loads and expanding the overall system transfer equation, and different configurations of bushings were discussed with respect to the natural frequency and static deflections.…”