Search Results for “finite-element method” – Collected book of scientific-technical articles https://journal.yuzhnoye.com Space technology. Missile armaments Fri, 26 Apr 2024 09:07:56 +0000 en-GB hourly 1 https://journal.yuzhnoye.com/wp-content/uploads/2020/11/logo_1.svg Search Results for “finite-element method” – Collected book of scientific-technical articles https://journal.yuzhnoye.com 32 32 3.1.2020 Analysis of the unsteady stress-strain behavior of the launch vehicle hold-down bay at liftoff https://journal.yuzhnoye.com/content_2020_1-en/annot_3_1_2020-en/ Fri, 29 Sep 2023 18:22:49 +0000 https://journal.yuzhnoye.com/?page_id=32230
The finiteelement method is applied to the stress-strain behavior calculation by using NASTRAN software. Key words: stress-strain behavior , finite-element method , plastoelastic deformations , breaking strength , reusability Bibliography: 1. Analysis of composite rocket motor case using finite element method. stress-strain behavior , finite-element method , plastoelastic deformations , breaking strength , reusability .
]]>

3. Analysis of the unsteady stress-strain behavior of the launch vehicle hold-down bay at liftoff

Authors:

Degtiarov М. O.1, Avramov K. V.2

Organization:

Yangel Yuzhnoye State Design Office, Dnipro, Ukraine1; Pidgorny A. Intsitute of Mechanical Engineering Problems, Kharkiv, Ukraine2

Page: Kosm. teh. Raket. vooruž. 2020, (1); 26-33

DOI: https://doi.org/10.33136/stma2020.01.026

Language: Russian

Annotation: The study of thermal strength of the hold-down bay is considered. The hold-down bay is a cylindrical shell with the load-bearing elements as the standing supports. The case of the hold-down bay consists of the following structural elements: four standing supports and the compound cylindrical shell with two frames along the top and bottom joints. The purpose of this study was the development of a general approach for the thermal strength calculation of the hold-down bay. This approach includes two parts. Firstly, the unsteady heat fields on the hold-down bay surface are calculated by means of the semi-empirical method, which is based on the simulated results of the combustion product flow of the main propulsion system. The calculation is provided by using Solid Works software. Then the unsteady stress-strain behavior of the hold-down bay is calculated, taking into consideration the plastoelastic deformations. The material strain bilinear diagram is used. The finiteelement method is applied to the stress-strain behavior calculation by using NASTRAN software. The thermal field is assumed to be constant throughout the shell thickness. As a result of the numerical simulation the following conclusions are made. The entire part of the hold-down bay, which is blown by rocket exhaust jet, is under stress-strain behavior. The stresses of the top frame and the shell are overridden the breaking strength that caused structural failure. The structure of the hold-down bay, which is considered in the paper, is unappropriated to be reusable. The hold-down bay should be reconstructed by reinforcement in order to provide its reusability.

Key words: stress-strain behavior, finite-element method, plastoelastic deformations, breaking strength, reusability

Bibliography:

1. Elhefny A., Liang G. Stress and deformation of rocket gas turbine disc under different loads using finite element modeling. Propulsion and Power Research. 2013. № 2. P. 38–49. https://doi.org/10.1016/j.jppr.2013.01.002
2. Perakis N., Haidn O. J. Inverse heat transfer method applied to capacitively cooled rocket thrust chambers. International Journal of Heat and Mass Transfer. 2019. № 131. P. 150–166. https://doi.org/10.1016/j.ijheatmasstransfer.2018.11.048
3. Yilmaz N., Vigil F., Height J., et. al. Rocket motor exhaust thermal environment characterization. Measurement. 2018. № 122. P. 312–319. https://doi.org/10.1016/j.measurement.2018.03.039
4. Jafari M. Thermal stress analysis of orthotropic plate containing a rectangular hole using complex variable method. European Journal of Mechanics A /Solids. 2019. № 73. P. 212–223. https://doi.org/10.1016/j.euromechsol.2018.08.001
5. Song J., Sun B. Thermal-structural analysis of regeneratively cooled thrust chamber wall in reusable LOX / Methane rocket engines. Chinese Journal of Aeronautics. 2017. № 30. P. 1043–1053.
6. Ramanjaneyulu V., Murthy V. B., Mohan R. C., Raju Ch. N. Analysis of composite rocket motor case using finite element method. Materials Today: Proceedings. 2018. № 5. P. 4920–4929.
7. Xu F., Abdelmoula R., Potier-Ferry M. On the buckling and post-buckling of core-shell cylinders under thermal loading. International Journal of Solids and Structures. 2017. № 126–127. P. 17–36.
8. Wang Z., Han Q., Nash D. H., et. al. Thermal buckling of cylindrical shell with temperature-dependent material properties: Conventional theoretical solution and new numerical method. Mechanics Research Communications. 2018. № 92. P. 74–80.
9. Duc N. D. Nonlinear thermal dynamic analysis of eccentrically stiffened S-FGM circular cylindrical shells surrounded on elastic foundations using the Reddy’s third-order shear de-formation shell theory. European Journal of Mechanics A /Solids. 2016. № 58. P. 10–30.
10. Trabelsi S., Frikha A., Zghal S., Dammak F. A modified FSDT-based four nodes finite shell element for thermal buckling analysis of functionally graded plates and cylindrical shells. Engineering Structures. 2019. № 178. P. 444–459.
11. Trinh M. C., Kim S. E. Nonlinear stability of moderately thick functionally graded sandwich shells with double curvature in thermal environment. Aerospace Science and Technology. 2019. № 84. P. 672–685.
12. Лойцянский Л. Г. Механика жидкости и газа. М., 2003. 840 с.
13. Launder B. E., Sharma B. I. Application of the energy dissipation model of turbulence to the calculation of flow near a spinning disc. International Journal of Heat and Mass Transfer. 1974. № 1. P. 131–138.
14. Михеев М. А., Михеева И. М. Основы теплопередачи. М., 1977. 345 с.
15. Малинин Н. Н. Прикладная теория пластичности и ползучести. М., 1968. 400 с.

Full text (PDF) || Content 2020 (1)

Downloads: 46
Abstract views: 
1667
Dynamics of article downloads
Dynamics of abstract views
Downloads geography
CountryCityDownloads
USA Boardman; Matawan; Boydton; Plano; Miami; Columbus; Columbus; Detroit; Phoenix; Phoenix; Phoenix; Monroe; Ashburn; Seattle; Ashburn; Boardman; Seattle; Portland; San Mateo; Des Moines; Boardman; Boardman; Ashburn; Ashburn24
Singapore Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore11
Ukraine Dnipro; Kyiv; Dnipro3
Germany;; Falkenstein3
Finland Helsinki1
Great Britain London1
Canada Monreale1
Romania Voluntari1
Netherlands Amsterdam1
Downloads, views for all articles
Articles, downloads, views by all authors
Articles for all companies
Geography of downloads articles
3.1.2020 Analysis of the unsteady stress-strain behavior of the launch vehicle hold-down bay at liftoff
3.1.2020 Analysis of the unsteady stress-strain behavior of the launch vehicle hold-down bay at liftoff
3.1.2020 Analysis of the unsteady stress-strain behavior of the launch vehicle hold-down bay at liftoff

Keywords cloud

Your browser doesn't support the HTML5 CANVAS tag.
]]> 4.2.2019 Numerical simulation of behavior of elastic structures with local stiffening elementse https://journal.yuzhnoye.com/content_2019_2-en/annot_4_2_2019-en/ Mon, 15 May 2023 15:45:37 +0000 https://journal.yuzhnoye.com/?page_id=27206
Main numerical methods are finite difference method, boundary element method, variation grid-based method, finite element method, method of local variations. Key words: finite-element method , strength , inclusions , computer simulation Bibliography: 1. Projection-iterative schemes for the realization of the finite-element method in problems of deformation of plates with holes and inclusions. finite-element method , strength , inclusions , computer simulation .
]]>

4. Numerical simulation of behavior of elastic structures with local stiffening elements

Authors:

Hudramovych V. S.1, Hart Ye. L.3, Strunin K. A.2

Organization:

The Institute of Technical Mechanics, Dnipro, Ukraine1; Yangel Yuzhnoye State Design Office, Dnipro, Ukraine2; Oles Honchar Dnipro National University, Dnipro, Ukraine3

Page: Kosm. teh. Raket. vooruž. 2019, (2); 25-34

DOI: https://doi.org/10.33136/stma2019.02.025

Language: Russian

Annotation: Availability of different inclusions, stiffenings, discontinuities (holes, voids and flaws) are the factors that cause structural irregularity and are typical for structural elements and buildings from various current technology areas, in particular aerospace technology. They significantly influence the deformation processes and result in stress concentration, which can cause local damages or malconformations and as a result lead to impossibility to further use the structure. Materials used are also heterogeneous in its structure. Inclusions can simulate thin stiffening elements, straps, welded or glue joints. It is necessary to detect the thin inclusions when phase transformations of materials are studied, for example, when martensite structures are formed. Study of the various bodies with inclusions is very important in the powder technology, ceramics, etc., where powder, previously compressed under high pressure, is sintered at high temperatures. Use of surface hardening that increases working efficiency of the structural elements is prospective in many engineering sectors. It is important to develop discrete hardening, implemented through manufacturing schemes of particular type. When discrete hardenings impact on the structural elements mode of deformation is simulated, they can also be considered as inclusions of specific structure. Inclusions can also simulate banding of the ferritic-pearlitic structure in the microstructure, related to the complex preloading under material plastic forming. It is advisable to use numerical methods for studies that are universal and suitable for objects of various shapes, sizes and types of loading. Main numerical methods are finite difference method, boundary element method, variation grid-based method, finite element method, method of local variations. This article features ANSYS – based computer simulation of the aerospace structural element behavior – a rectangular plate with two extended elastic inclusions of different rigidity, simulating elastic heterogeneities of structures and materials.

Key words: finite-element method, strength, inclusions, computer simulation

Bibliography:

1. Brebbia K., Telles J., Wroubell L. Metody granichnykh elementov / per. s angl. M., 1987. 524 s.
2. Vasidzu K. Variatsionnye metody v teorii uprugosti i plastichnosti / per. s angl. M., 1987. 544 s.
3. Vilchevskaya Ye. N., Korolev I. K., Freidin A. B. O fazovykh prevrasheniyakh v oblasti neodnorodnosti materiala. Ch. 2: Vzaimideistvie treschiny s vklyucheniem, preterpevayushim fazovoe prevraschenie. Izv. RAN. Mekhanika tverdogo tela. 2011. № 5. S. 32–42.
4. Hart E. L. Konechnoelementniy analiz ploskodeformiruemukh sred s vklyucheniyami. Visn. Dnipropetr. un-tu. Ser.: Mekhanika. 2011. Vyp. 15, t. 2. S. 39–47.
5. Hart E. L., Hudramovich V. S. Chislennoye modelirovanie povedeniya ploskodeformiruemykh strukturirivannykh sred na osnove proektsionno-iteratsionnykh ckhem MKE. Matemat. modelirovanie v mekh. deform. tel i konstruktsiy: materialy 24-oy Mezhdunarod. conf. (SPb., Rossiya, 2011). SPb., 2011. T. 11. S. 37–39.
6. Hart E. L., Hudramovich V. S. Chislennoe modelirovanie structurirovannykh sred. Dopovidi NAN Ukrainy. 2012. № 5. S. 49–56.
7. Hart E. L., Hudramovich V. S. Proektsionno-iteratsionnaya modifikatsia metoda lokalnykh variatsiy dlya zadach s kvadratychnym funktsionalom. Prikl. Matematika I mekhanika. 2016. T. 80, № 2. S. 218–230. https://doi.org/10.1016/j.jappmathmech.2016.06.005
8. Hudramovich V. S. Osobennosti neuprugogo povedeniya neodnorodnykh obolochechnykh elementov konstruktsiy. Aktualnye problem mekhaniki: monografia/ za red. M. V. Polyakova. Dnipro, 2018. S. 195–207.
9. Hudramovich V. S., Hart E. L. Konechnoelementniy analiz processa rasseyanogo razrusheniya ploskodeformiruemykh uprugoplastichnykh sred s lokalnymi contsetratami napryazheniy. Uprugost’ I neuprugost’: Materialy Mezhdunarod. nauchn. symp. po problemam mekhaniki deformiruemykh tel, posvyaschennogo 105-letiyu so dnya rozhdeniya A. A. Ilyushina (Moskow, 2016 ). M., 2016. S. 158–161.
10. Hudramovich V. S., Hart E. L., Strunin K. A. Modelirovanie processa deformirovaniya plastiny s uprugimi protyazhonnymi vklyucheniyami na osnove metoda konechnykh elementov. Tekhn. mechanika. 2014. № 2. S. 12–24.
11. Hudramovich V. S., Demenkov A. F., Konyukhov S. N. Nesuschaya sposobnost’ neidealnykh tsilindricheskykh obolochek s uchetom plasticheskykh deformatsiy. Prochnost’ I nadezhnost’ elementov konstruktsiy: sb. nauchn. tr. K., 1982. S. 45–48.
12. Hudramovich V. S., Klimenko D. V., Hart E. L. Vliyanie vyrezov na prochnost’ tsilindrycheskykh otsekov raket-nositeley pri neuprugom deformirovanii materiala. Kosmichna nauka I technologia. 2017. T. 23, № 6. S. 12–20.
13. Hudramovich V. S., Levin V. M., Hart E. L. i dr. Modelirovanie processa deformirovaniya plastinchatykh elementov zherezobetonnykh konstruktsiy teploenergetiki s ispolzovaniem MKE. Techn. mechanika. 2015. № 2. S. 59–70.
14. Hudramovich V. S., Reprintsev A. V., Ryabokon’ S. A., Samarskaya E. V. Otsenka resursa konstruktsiy raketno-kosmicheskoy techniki pri uchete vliyaniya kontsetratov napryazheniy v vide otverstiy. Technicheskaya diagnostika i nerazrushaushiy control. 2016. № 2. S. 28–36.
15. Gultyaev V. I., Zubchaninov V. G., Zubchaninov D. V. Strukturnye izmeneniya stali 45 v processe eyo deformirovaniya. Izv. Tulskogo gos. un-ta. 2005. Vyp. 8. S. 26-29.
16. Zenkevich O., Morgan K. Konechnye elementy i aproximatsia / per. s angl. M., 1986. 318 s.
17. Kashanov A. E. Perspektivy sotrudnichestva NAN Ukrainy, NAN Belarusi i Yuzhnoye SDO dlya resheniya problemnykh voprosov kosmicheskoy otrasli. Raketnaya technika. Novye vozmozhnosti: nauchn.-techn. sborn. / pod red. A. V. Degtyareva. Dnepr, 2019. S. 281–294.
18. Koval’ Y. N., Lobodyuk V. A. Deformatsionnye i relaksatsionnye yavlenia pri prevraschenniyakh martensitnogo typa. K., 2010. 288 s.
19. Lyashenko B. A., Kuzema Y. A., Digahm M. S. Uprochnenie poverkhnosti metallov pokrytiyami diskretnoy struktury s povyshennoy adhezionnoy i cohezionnoy stoykostyu. К., 1984. 57 s.
20. Stern M. B., Rud’ V. D. Mekhanichni ta kompyuterni modeli konsolidatsii granulyuovanykh seredovysh na osnovi poroshkiv metaliv i keramiki pri deformuvanni ta spikanni / za red. V. V. Skorokhoda. Lutsk, RVV LNTU, 2010. 232 s.
21. ANSYS release 18.1 Documentation for ANSYS WORKBENCH: ANSYS Inc.
22. Hart E., Hudramovich V. Applications of the projective-iterative versions of FEM in damage problems for engineering structures. Maintenance–2012: Proc. of Int. Conf. (Zenica, Bosnia and Herzegovina, 2012). P. 157–164.
23. Hart E., Hudramovich V. Projection-iterative schemes for the realization of the finite-element method in problems of deformation of plates with holes and inclusions. J. Math. Sci. 2014. Vol. 203. № 1. P. 55–69. https://doi.org/10.1007/s10958-014-2090-x
24. Hudramovich V. S. Features of nonlinear deformation and critical states shell structures with geometrical imperfections. Int. Appl. Mech. 2006.Vol. 42, № 12. P. 1323–1355. https://doi.org/10.1007/s10778-006-0204-y
25. Hudramovich V. S., Hart E. L., Ryabokon’ S. A. Elastoplastic deformation of nonhomogeneous plates. J. Eng. Math. 2013. Vol. 78, № 1. P. 181–197. https://doi.org/10.1007/s10665-010-9409-5
26. Hudramovich V. S., Hart E. L., Strunin K. A. Modeling of the behavior plane-deformable elastic media with elongated elliptic and rectangular inclusions. Materials Science. 2017. Vol. 52, № 6. P. 768–774. https://doi.org/10.1007/s11003-017-0020-z
27. Нudramovich V. S., Lebedev A. A., Mossakovsky V. I. Plastic deformation and limit states of metal shell structures with initial shape imperfections. Light-weight steel and aluminium structures: Procedings Int. Conf. (Helsinki, Finland, 1999). Amsterdam/ New York / Tokyo, 1999. P. 257–263. https://doi.org/10.1016/B978-008043014-0/50133-5
28. Olevsky E. A., Maximenko A. and Van Der Biest O. On-line sintering strength of ceramic composites. Int. J. Mech. Sci. 2002. Vol. 44. P. 755–771. https://doi.org/10.1016/S0020-7403(02)00005-X

Full text (PDF) || Content 2019 (2)

Downloads: 39
Abstract views: 
560
Dynamics of article downloads
Dynamics of abstract views
Downloads geography
CountryCityDownloads
USA Boardman; Matawan; Baltimore; North Bergen; Plano; Columbus; Columbus; Phoenix; Phoenix; Los Angeles; Monroe; Ashburn; Seattle; Ashburn; Ashburn; Seattle; Tappahannock; San Mateo; San Mateo; San Mateo; Des Moines; Des Moines; Boardman; Boardman; Ashburn25
Singapore Singapore; Singapore; Singapore; Singapore; Singapore; Singapore6
China Shanghai1
Finland Helsinki1
Unknown1
Canada Monreale1
Germany Falkenstein1
Romania Voluntari1
Netherlands Amsterdam1
Ukraine Dnipro1
Downloads, views for all articles
Articles, downloads, views by all authors
Articles for all companies
Geography of downloads articles
4.2.2019 Numerical simulation of behavior of elastic structures with local stiffening elementse
4.2.2019 Numerical simulation of behavior of elastic structures with local stiffening elementse
4.2.2019 Numerical simulation of behavior of elastic structures with local stiffening elementse

Keywords cloud

Your browser doesn't support the HTML5 CANVAS tag.
]]>