DISPLACEMENT AND LOAD IN THE NODES OF THE MINE TRAWL ACTUATOR MECHANISM DURING AN EXPLOSION
DOI:
https://doi.org/10.31471/2304-7399-2024-19(73)-86-95Keywords:
blast wave, mine trawl mechanism, kinematic analysis, force analysis.Abstract
It has been established that the development of an analytical model for determining the displacements and loads of the actuator nodes during an explosion is relevant, has theoretical and practical value. Based on the analysis of the latest research sources and publications, a conclusion was made about the insufficient attention to the impact of the blast wave on the actuator nodes. Therefore, the purpose of the work was to develop an analytical model for assessing the displacements and loads of the actuators taking into account the impact of the explosion. To develop the model, a mine trawl roller mechanism was proposed. The dependences of the kinematic parameters of the links of the roller mechanism, which falls into the explosion zone, on the parameters of the blast wave were obtained. A force analysis of the mine trawl mechanism was carried out. It was clarified what external loads arise on the links of the mechanisms and how they are redistributed through the movable joints to the body links of the vehicle. An equation was proposed to determine the angle of inclination of the protective shield from the condition of stabilizing the vertical stability of the machine unit. The results obtained make it possible to analyze the displacements and loads of the links of real mine trawl actuators in order to optimize their parameters during design.
References
Larcher M. Simulation of the effects of an air blast wave. JRC 41337. European Communities, 2007.
Schwer L. A brief introduction to coupling load blast enhanced with Multi-Material ALE: the best of both worlds for air blast simulation. LS-DYNA Forum. Bamberg 2010.
Li Shuhu, Liu Juncong, Huang Yusong, Liu Aiyun, Xu Jingli, Xing Wenfang, Wei Huazhen and Wang Ronghui. Research on Anti-ballistic Mechanism and Numerical Simulation of Biomimetic Composite. 2022 International Conference on Defence Technology (2022 ICDT). Journal of Physics: Conference Series. 2478. (2023) DOI: 10.1088/1742-6596/2478/7/072050
Alañón, A., CerroPrada, E., VázquezGallo, M. J., and Santos, A. P. (2018). Mesh size effect on finite element modeling of blast loaded reinforced concrete slab. Engineering with Computers, 34(4), 649658. DOI: 10.1007/s0036601705644
Chiquito, M., Castedo, R., López, L. M., Santos, A. P., Mancilla, J.M., and Yenes, J. I. (2019). Blast Wave Characteristics and TNT Equivalent of Improvised Explosive Device at Small scaled Distances. Defence Science Journal, 69(4), 328335. DOI: 10.14429/dsj.69.13637
Forth, S. (2012). ProSAir User Guide. Cranfield, UK: Crandfield University, Applied Mathematics and Scientific Computing Department. Huang, Y., Willford, M. R., and Schwer, L. E. (2012, June). Validation of LSDYNA r MMALE with blast experiments. Paper presented at the 12th International LSDYNA Users Conference, Detroit, DYNAmore.
Кіницький Я.Т. Короткий курс теорії механізмів і машин. Підручник для інж.-техн. спец. вищих навч. закладів України. 2-е вид. перероблене і скорочене. Львів: Афіша, 2004. 272 с.
