Autors: Valkov, G. S., Nikolov, V. N.
Title: Analysis of stresses and deformations in the chassis of rough terrain forklifts
Keywords: rough terrain forklifts, chassis, stresses, deformations, estimated strength, FEM.

Abstract: The outcome of studying the strength and the deformation characteristics of rough terrain forklifts, using a created 3D model applying FEM, is presented herein. The tested chassis design features are described. The external loads of the chassis structure have been estimated throughout two operation modes: handling the load at vertically elevated lifting mast and also featuring load lifted off the ground, using lifting mast in transport mode tilted backwards. Two alternating payloads have been applied for each of the selected modes: featuring reated load and standard size of the centre of gravity, and featuring reduced load at increased height of the centre of gravity. The resulting rates of stresses and deformations of the studied chassis of a rough terrain forklift have been calculated, presented and analysed with regard to the two main operating modes both of which entail two loading alternatives determined by the weight and the location of the payload.


  1. Georgiev G 1980 Design, construction and calculation of forklifts Technika Sofia Bulgaria
  2. Genov J and Kralov I 2019 A linear quadratic regulator synthesis for a semi-active vehicle suspension Part 1-Modeling of the dynamical system AIP Conf. Proc. 2172 110006 1-8
  3. Evtimov I 2014 Electric and motor forklift trucks University of Ruse, Ruse, Bulgaria
  4. Iliev I and Nikolov V 2007 System for automatic stability of forklift trucks Patent BG 62225 B1 November 15 2007
  5. Iliev I and Nikolov V 2007 System for control of the operations of forklift trucks Patent BG 62226 B1 November 15 2007
  6. Kostov K 1982 Electric and motor forklifts. Methodology for strength testing and strength assessment IEM Sofia Bulgaria
  7. Nikolov N and Tsonev V 2013 Strength of materials Handbook Avangard Prima Sofia Bulgaria
  8. Nikolov V 2013 Mechanical-mathematical modeling of the tilting process of lifting masts of forklift trucks with load Journal of the Technical University at Plovdiv “Fundamental Sciences and Applications” Plovdiv Bulgaria 19(2) 347-350
  9. Rusimov V, Borisov I, Dimitrov N and Angelov P 2019 SOLIDWORKS - Modeling and Drawings Technologika Sofia Bulgaria
  10. Sofronov Y, Stoyanova Y, Kopralev N and Todorov G 2019 Kinematic study of the articulated trucks operating layout of turn for articulated vehicles TechSys 2019 16-18 May Plovdiv Bulgaria IOP Conf. Se.: Mat. Sc. and Eng. 618 012044
  11. Stoilov K and Karadimitrov I 1989 Attachment equipment for forklifts Technika Sofia Bulgaria
  12. Stoychev G, Chankov E, Dimova B 2010 Stress analysis of a fork-lift truck lifting installation BulTrans-2010 24-26 September Sozopol Bulgaria Proc. 205-208
  13. Todorov G and Kamberov K 2017 Virtual prototyping of drop test using explicit analysis AIP Conf. Proc.1910 020012
  14. Tsonev V Kuzmanov N Borisov B and Penkov K 2019 System for materials testing at static loading TechSys 2019 16-18 May Plovdiv Bulgaria IOP Conf. Se.: Mat. Sc. and Eng. 618 012048
  15. Tsonev V Stoychev G Chankov E 2017 Stress analysis of a link for slat chain conveyor BulTrans-2017 11-13 September Sozopol Bulgaria Journal MATEC Web of Conferences 133
  16. Valkov G and Nikolov V 2018 Classification of terrain forklifts 7th Int. Sc. Conf. TECHSYS 2018 Plovdiv Bulgaria Proc. 253-257, ISSN online: 2535-0048
  17. Valkov G and Nikolov V 2019 Analysis of the power drives of terrain forklifts. Proc. of 12th Int. Sc. Conf. “Environment. Technology. Resources” June 20-22 2019 Rezekne Academy of Technologies Rezekne Latvia III 241-248
  18. Yordanov P and Petkov G 2018 Comparative Study of the Bending and Torsional Stresses in Opened Cross Section Thin-Walled Beam. Sc. Jour. Mechanics of Machines 121(3) 49-53 ISSN 0861-9727
  19., [Accessed March 9, 2020]


IOP Conference Series: Materials Science and Engineering, vol. 878, issue 1, pp. 012038, 2020, United Kingdom, Bristol, IOP Publishing, DOI 10.1088/1757-899X/878/1/012038

Copyright IOP Publishing Ltd.

Full text of the publication

Цитирания (Citation/s):
1. Kralov I, Genov J and Angelov I 2020 Dynamical stresses in the high class wind turbine blades caused in nonhomogeneous nonstationary wind field. Part 2 Numerical simulations 9th Int. Sc. Conf. TECHSYS 2020 14-16 May 2020 Plovdiv Bulgaria IOP Conf. Ser.: Mater. Sci. Eng. 878 012037 doi:10.1088/1757-899X/878/1/012037 - 2020 - в издания, индексирани в Scopus или Web of Science
2. Kralov I, Nedelchev K 2021 Passive transport noise barrier for acoustic energy harvesting. Journal of Environmental Protection and Ecology, 22 (6), pp. 2318-2329. - 2021 - в издания, индексирани в Scopus или Web of Science

Вид: публикация в международен форум, публикация в издание с импакт фактор, индексирана в Scopus