Naslov
Analiza čvrstoće koljenastog vratila korištenjem faktora sigurnosti dobivenih pomoću dinamičkih naprezanja
(Analysis of crankshaft strength by using direct stresses from CFs)

Autori
Žalac, Ivan

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, diplomski rad, diplomski

Fakultet
Strojarski fakultet u Slavonskom Brodu

Mjesto
Slavonski Brod

Datum
09.10

Godina
2013

Stranica
90

Mentor
Kozak, Dražan

Neposredni voditelj
Knaus, Oliver

Ključne riječi
koljenasto vratilo; zamor; koncentracija naprezanja; MKE; Excite; jedinični tenzori naprezanja; faktori sigurnosti
(crankshaft; fatigue; stress concentration; FEM; Excite; direct stresses; safety factors)

Sažetak
This report is a result of diploma work made for getting a mechanical engineering master degree title. Work was made on Mechanical Engineering Faculty in Slavonski Brod, with the support of AVL – AST d.o.o. Zagreb team, as a part of AVL – AST University Partnership Program. Time needed to complete tasks of this work was six months. Main target of this work was to check and to determine the workflow for getting the comparison factors (CFs) from unit stress tensors components. The idea of this method is to get CFs for the most critical fillets on webs fast and accurate, without need to run dynamic multi-body system simulation (MBS) and detailed 3D fatigue evaluation on FEM models. This is very important in early stage of crankshaft design where a large number of possible fillet designs are available and have to be checked. Method presented in next chapter is determined using the EXCITE Power Unit (PU) 102_I4_Demo template, which is a model of an inline 4 cylinder diesel engine. Fillet shape was modified in Fillet Modeler, and for determination of method workflow fillet shape was a simple radius. First the EXCITE PU analysis was done, and safety factors (SFs) were evaluated using the EXCITE Fatigue/fe- safe software. These values have been used as a reference for comparison of CFs results derived from a new unit stresses based method. It was very important that the CFs ratio between webs from new method follows the ratio from these results for webs crank pin (CP) fillets and main journal (MJ) fillets

Izvorni jezik
Hrvatski

Znanstvena područja
Strojarstvo

Napomena
Diplomski rad je izrađen u suradnji s AVL-AST d.o.o. Zagreb kao dio partnerskog ugovora između Strojarskog fakulteta u Slavonskom Brodu i tvrtke AVl-AST d.o.o. Izrađene su inačice diplomskog rada i na hrvatskom i na engleskom jeziku.

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