The stability of the sandwich conical shell panel - the stress state analysis
| العنوان: | The stability of the sandwich conical shell panel - the stress state analysis |
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| المؤلفون: | Edward Tertel, Piotr Kuryło |
| المصدر: | Tehnički Vjesnik, Vol 24, Iss Supplement 1, Pp 55-60 (2017) Tehnički vjesnik Volume 24 Issue Supplement 1 |
| بيانات النشر: | Mechanical Engineering Faculty in Slavonski Brod, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Physics, sandwich shell, deformation, General Engineering, 020101 civil engineering, 02 engineering and technology, stability, Deformation (meteorology), 0201 civil engineering, deformacija, izvijanje, naprezanje, panel oplata, stabilnost, Stress (mechanics), stress, 020303 mechanical engineering & transports, buckling, 0203 mechanical engineering, Buckling, lcsh:TA1-2040, Composite material, lcsh:Engineering (General). Civil engineering (General) |
| الوصف: | U radu se daje analiza stanja naprezanja konusne panel oplate slojevite konstrukcije. Analizirana oplata sastavljena je od dva vanjska sloja (obloge) i srednjeg sloja. Obloge podnose opterećenje, srednji sloj je male težine i odupire se samo poprečnom smiku. Obloge su od izotropnih, stlačivih materijala za otvrdnjivanje zbog obrade. Središnji sloj zauzima veći dio debljine čitave oplate (preko 80 %). Razmatrana oplata je dvo-parametarski opterećena. Do deformacije pred-izvijanja oplate može doći u okviru elastičnog, elastično-plastičnog ili plastičnog područja. Kako bi se odredilo stanje naprezanja do kojeg dolazi tijekom gubitka stabilnosti, prihvaćeni su konstitutivni odnosi Nadai-Hencky teorije deformacije uz Huber-Mises-Hencky(HMH) uvjet popuštanja. Dobiveni rezultati pokazuju da tijekom gubitka stabilnosti može doći do privremenog smanjenja efektivnog naprezanja. Tada može doći do pojave rasterećenja i kaljenja i treba ju uzeti u obzir. The paper presents an analysis of the stress state in a sandwich open conical shell panel. The shells under consideration consist of two face-layers (facings, claddings) and a core layer. The facings are load-carrying, a core layer is lightweight and it resists transverse shear only. The facings are made of isotropic, compressible, work-hardening materials. The core is the greater part of the whole shell thickness (over 80 %). The shell under consideration is two-parametrical loaded. Pre-buckling deformation of the shell could occur within the elastic, elastic-plastic or plastic range. In order to determine the stress state which occurs during stability loss, the constitutive relations of the Nadai-Hencky deformation (NHd) theory, alongside the HMH (Huber-Mises-Hencky) yield condition, are accepted. The results obtained from the analysis show that during stability loss, the effective stress may temporarily decrease. Then the unloading and hardening phenomena could occur and this should be taken into consideration. |
| وصف الملف: | application/pdf |
| تدمد: | 1848-6339 1330-3651 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b94bf83ec30523c588b4089dd7dd762bTest https://doi.org/10.17559/tv-20140912102638Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....b94bf83ec30523c588b4089dd7dd762b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18486339 13303651 |
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