Sergey Repin, Ivan Vorontsov, Denis Orlov, Roman Litvin


Introduction: The movement smoothness of transport and handling machines (THM) (excavators, cranes, road maintenance equipment, etc.) on a vehicle chassis significantly affects their durability as a result of the large weight of equipment and uneven load distribution along the axes of the base chassis, which causes heavy dynamic loads when moving along roads with imperfect pavement. However, THM often have to move along those very roads. Purpose of the study: We aimed to increase the movement smoothness of THM on a vehicle chassis by using a shock absorber of new design as the main vehicle undercarriage suspension element. Methods: The hydropneumatic shock absorber is considered the most common. The principle of its operation is based on hydraulic resistance that occurs when the piston with the rod move in a space filled with oil, while the gas in the closed part is compacted, compensating for changes in the internal volume. Most often, the main disadvantage related to the operation of hydropneumatic shock absorbers (HPSA) is the probability of bottoming when hitting a barrier (obstacle), which results in dynamic loads reducing the service life of the vehicle and the parts of the shock absorber. Results: The paper describes a new shock absorber design ruling out bottoming, provides a mathematical model of its elastic response, and presents the results of modeling in Mathcad, confirming the operability of the device.


movement smoothness, shock absorber, elastic response.

Full Text:



Audi (2001). Pneumatic suspension systems. Part 1. Clearance regulation in Audi A6. Design and operation. Self-training program 242. [online] Available at: [Date accessed 20.10.2022].

Akopyan, R. A. (1979). Pneumatic suspension of transport vehicles. Lvov: Vishcha Shkola, 218 p. (2017). ALCA®: Ridigity — an issue of measure. [online] Available at: [Date accessed 20.10.2022].

Chelomey, V. N. (ed.) (1981). Vibration in engineering. Reference book in 6 volumes. Vol. 1. Moscow: Mashinostroyenie, 352 p.

Dobromirov, V. N., Gusev, Ye. N., Karunin, M. A., and Khavkhanov, V. P. (2006). Shock absorbers. Design. Calculation. Testing. Moscow: Moscow State Technical University “MAMI”, 184 p.

Repin, S. V. (2022). Pneumohydraulic shock absorber. Patent RU208894U1.

Repin, S. V., Dobromirov, V. N., Orlov, D. S., and Kapustin, A. A. (2019). The study of the elastic characteristics of the new hydro-pneumatic shock absorber. Bulletin of Civil Engineers, No. 5 (76). pp. 260–269. DOI: 10.23968/1999-5571-2019-16-5-260-269.

Repin, S., Bukirov, R., and Vasilieva, P. (2020). Study on effects of damping characteristics of base chassis suspension on operational safety of transport and handling machinery. Transportation Research Procedia, Vol. 50, рр. 574–581. DOI: 10.1016/j.trpro.2020.10.069.

Rotenberg, R. V. (1972). Motor vehicle suspension. Vibrations and running smoothness. 3rd edition. Moscow: Mashinostroyenie, 392 p. (2022). Design and operation of pneumatic suspension. [online] Available at: [Date accessed 20.10.2022].

Zaitsev, A. V. (2007). Calculation of vehicle suspension parameters. Kurgan: Kurgan State University, 16 p.

Zhileykin, M. M., Kotiev, G. O., and Sarach, Ye. B. (2012). Method for calculating characteristics of pneumatic-hydraulic controlled suspension with two-level damping in multi-axle vehicles. Science & Education, No. 1, 77-30569/346660. [online] Available at: [Date accessed 20.10.2022].

Lukin, P. P., Gasparyants, G. A., and Rodionov, V. F. (1984). Design and analysis of vehicles. Moscow: Mashinostroyenie, 376 p.


  • There are currently no refbacks.


ISSN: 2500-0055