Open Information and Computer Integrated Technologies

The butt part of the main rotor blade (RB) of the helicopter is presented. A geometric model of the calculated connection was developed using the CATIA V5 system. With the help of the ANSYS system, a finite element model of the butt part of the main rotor blade was developed, and the calculation and analysis of the characteristics of the results obtained were carried out. To describe the response of materials to an external action, a model of an elastically deformable isotropic body was used with the assignment of the corresponding elastic constants of the material. The case of loading a bolted joint by a centrifugal force arising during the rotation of a blade is considered. To model the contact interaction, a generalized surface-to-surface contact interaction model was adopted. The analysis of the calculation results includes the determination of reactions at the attachment points, the values of the maximum displacements of structural elements and stresses in the stress concentration zones. In the course of the calculation, reactions were determined at the points of attachment of the tip along the holes in the lugs. The nature of the deformation of the bolted joint as a whole and of its individual elements is analyzed. The assessment of total displacements and displacement components is carried out. To assess the static and fatigue strength of the elements of the bolted connection of the tip with the blade spar, the stresses in the load-bearing elements were analyzed for typical concentrators. When assessing the static strength, the distribution of equivalent stresses according to Mises was analyzed. The distribution of stresses in the zone of holes along the rows is analyzed, starting from the root section in the direction of increasing the Y coordinate. The maximum von Mises stresses for typical stress concentration zones were compared with the ultimate strength of the structural element material. To assess the fatigue strength, we analyzed the distribution of the main tensile stresses in the load-bearing elements by typical stress concentrators. The maximum values of these stresses were compared with the fatigue limit of the structural element material.

Интегрированное проектирование винтокрылых летательных аппаратов транспортной категории [Текст]: учебник: в 3 ч. / А. Г. Гребеников, Н. И. Москаленко, В. А. Урбанович и др. – Х.: Нац. аэрокосм. ун-т им. Н. Е. Жуковского «Харьк. авиац. ин-т», 2016. – Ч. 1. – 411 с.

Проектування важких одногвинтових вертольотів та їх трансмісій. Ч. 1 [Електронний ресурс]: підручник / О. Г. Гребеніков, А.М. Гуменний, А. І. Долматов та ін. – Харків: Нац. аерокосм. ун т ім. М. Є. Жуковського "Харків. авіац. ін-т", 2018. – 361 с.

Конструирование агрегатов и систем вертолётов: учеб. пособие / К. Ю. Вишняков, В. Н. Доценко, Я. С. Карпов, В. С. Кривцов, Л. И. Лосев, В. И. Рябков, В. А. Урбанович. – Харьков: Нац. аэрокосм. ун-т «Харьк. авиац. ин-т», 2005. – 384 с.

Вертолет Ми-8 /В. А. Данилов, А. Г. Другов, И. В. Тетерин. – М.: Транспорт, 1979. – 248 с.

Методология интегрированного проектирования и моделирования сборных самолетных конструкций /А. Г. Гребеников. – Харьков: Нац. аэрокосм. ун-т «ХАИ», 2006. – 532 с.

ANSYS Analysis Guide. Structural Analysis Guide. Chapter 8. Nonlinear structural analysis. 001087. 4th Edition. SAS IPã.

ANSYS Theory Manual. Chapter 2. Structures. SubSection 2.1.1. Stress-Strain Relationships. 001087. 4th Edition SAS IP ©. – 2016.

ANSYS Contact Technology Guide. Chapter 10. Multipoint Constraints and Asseblies. Section 10.3. Surface-Based Constraints. 001087. 4th Edition SAS IP ©. – 2016.

ANSYS Element Guide. Chapter 3. Element References. Section 3.1. Element Library. SOLID185. 001087. 4th Edition. SAS IP©. – 2016.

ANSYS Element Guide. Chapter 3. Element References. Section 3.1. Element Library. TARGE170 and CONTA174. 001087. 4th Edition. SAS IP©. – 2016.

ANSYS Contact Technology Guide. Chapter 3. Surface-to-Surface Contact. 001087. 4th Edition. SAS IP©.– 2016.

References

Grebenikov, A.G., Moskalenko N.I., Urbanovich V.A. Integrirovannoe proektirovanie vintokrylyh letatel'nyh apparatov transportnoj kategorii: uchebnik v 3 ch. [Integrated design of rotary-wing aircraft transport category]. Khakov. Zhukovsky National Aerospace University, Kharkiv Aviation Institute. Publ., 2016, part1, 411 p.

Grebenikov, A.G., Humenny A.M., Dolmatov A.I. and oth. Proektuvannya vazhkih odnogvintovih vertoletiv ta ih transmisiy: pidruchnik [Design of heavy single-rotor helicopters and their transmissions]. Khakov. Zhukovsky National Aerospace University, Kharkiv Aviation Institute. Publ., 2018, part1, 361 p.

Vishnyakov, K. Yu., Dotsenko, V. N., Karpov, Ya. S., Krivtsov, V. S., Losev, L. I., Ryabkov, V. I., Urbanovich, V. A. Konstruirovanie agregatov i sistem vertolyotov: ucheb. posobie [Design of the Helicopters Units and Systems]. Kharkov. National Aerospace University «Kharkiv Aviation Institute», Publ., 2005. – 384 p.

Danilov V.A., Druhov A.G., Teterin I.V. Vertolet Mi-8 [Helicopter Mi-8]. Moscow. Transport, Publ., 1979. – 248 p.

Grebenikov, A.G. Metodologiya integrirovannogo proektirovaniya i modelirovaniya sbornih samoletnih konstrurziy [Methodology for Integrated Design and Modeling of Prefabricated Aircraft Structures]. Kharkov. National Aerospace University «Kharkiv Aviation Institute», Publ., 2006. – 532 p.

ANSYS Analysis Guide. Structural Analysis Guide. Chapter 8. Nonlinear structural analysis. 001087. 4th Edition. SAS IPã.

ANSYS Theory Manual. Chapter 2. Structures. SubSection 2.1.1. Stress-Strain Relationships. 001087. 4th Edition SAS IP ©. – 2016.

ANSYS Contact Technology Guide. Chapter 10. Multipoint Constraints and Asseblies. Section 10.3. Surface-Based Constraints. 001087. 4th Edition SAS IP ©. – 2016.

ANSYS Element Guide. Chapter 3. Element References. Section 3.1. Element Library. SOLID185. 001087. 4th Edition. SAS IP©. – 2016.

ANSYS Element Guide. Chapter 3. Element References. Section 3.1. Element Library. TARGE170 and CONTA174. 001087. 4th Edition. SAS IP©. – 2016.

ANSYS Contact Technology Guide. Chapter 3. Surface-to-Surface Contact. 001087. 4th Edition. SAS IP©.– 2016.