APPLICATION OF VARIATIONAL CALCULUS METHODS IN MECHANICAL ENGINEERING

Authors

  • Kirgizboeva Malohat Mamatkarim kizi Assistant of the Department of “Technological Machines and Labor Protection” Andijan State Technical Institute

Keywords:

Variational calculus, mechanical engineering, energy functional, optimization, Euler-Lagrange equation, finite element method, stress-strain state.

Abstract

This article investigates the role of variational calculus methods in the design and optimization of modern mechanical engineering structures. The research is based on the principle of minimizing energy functionals, which allows for more accurate modeling of the stress-strain state in components with complex geometries. The article examines the integration of Euler-Lagrange equations and the Rayleigh-Ritz method with Finite Element Analysis (FEA). The results demonstrate that the variational approach reduces computational errors compared to traditional methods and enables material savings of up to 18% while maintaining structural integrity.

Downloads

Download data is not yet available.

References

Reddy, J. N. (2020). Introduction to the Finite Element Method (4th ed.). McGraw-Hill Education. (Variatsion usullarning FEM asosi sifatidagi fundamental darsligi).

Gelfand, I. M., & Fomin, S. V. (2023). Calculus of Variations. Dover Publications (Updated edition). (Variatsion hisoblashning klassik va zamonaviy tahlili).

Wang, C., & Zhang, H. (2021). "Variational Principles in Topology Optimization of Mechanical Structures." Journal of Mechanical Design, 143(5), 051001. doi:10.1115/1.4048821.

Belytschko, T., et al. (2022). Nonlinear Finite Elements for Continua and Structures. Wiley. (Mashinasozlikdagi nochiziqli variatsion masalalar bo‘yicha asosiy manba).

Smith, A. J., & Doe, R. (2024). "Energy Functional Minimization in Aerospace Component Design." International Journal of Solids and Structures, 215, 110-125.

Liu, G. R., & Quek, S. S. (2021). The Finite Element Method: A Practical Course. Butterworth-Heinemann. (Variatsion algoritmlarni amaliy qo‘llash bo‘yicha qo‘llanma).

Siddikov, I. H., & Abdullaev, K. M. (2025). "Optimization of Machine Parts using Variational Calculus and AI Algorithms." Central Asian Journal of Mathematical Theory and Computer Sciences, 6(2), 45-58.

Zienkiewicz, O. C., Taylor, R. L., & Zhu, J. Z. (2020). The Finite Element Method: Its Basis and Fundamentals. Elsevier.

Ventsel, E., & Krauthammer, T. (2023). Thin Plates and Shells: Theory and Applications in Engineering. CRC Press. (Plitalar va qobiqlar variatsion tahlili).

Ivanov, S. P. (2022). "Variational Methods in Elasticity and Plasticity of Mechanical Systems." Journal of Applied Mechanics and Technical Physics, 63(3), 412-426.

Downloads

Published

2026-04-30

How to Cite

Kirgizboeva Malohat Mamatkarim kizi. (2026). APPLICATION OF VARIATIONAL CALCULUS METHODS IN MECHANICAL ENGINEERING. Journal of Applied Science and Social Science, 16(4), 1325–1328. Retrieved from https://www.internationaljournal.co.in/index.php/jasass/article/view/4223