Prediction of transport vehicles’ durability with consideration of corrosive surface cracks propagation in structural elements

• Autorzy: Droździel P. , Popovych P. , Vitenko T. , Shevchuk O. , Zolotyi R. , Kononchuk O.

Identyfikatory

DOI

10.20858/sjsutst.2018.101.5

• Języki publikacji: EN

Abstrakty

EN

Support frameworks of transport vehicles operate under varying terrain conditions under the influence of extreme climate and corrosive environments. When transporting cargo, dust is deposited on the surface of metal structures. The combination of dust and moisture creates an aggressive environment resulting in intense corrosion damage. The damage is caused by the defects of corrosion pitting, which occur on the surface and transform into corrosion cracks. Based on energy approaches, with the application of well-known results for the mathematical description of electrochemical reactions and the principles of fragile fracture mechanics, an analytical model of durability is proposed for the first time. The model determines the residual life of maximum loaded elements of undercarriages with surface cracks under the action of dynamic loads and corrosive environments. For this case, a set of mathematical relations in the form of a non-linear differential equation was developed, as well as the initial and final conditions for determining the life of vehicles’ structural elements with corrosive surface cracks. The analytical model implementation is proven by solving the problem of determining the residual life of a vehicle’s element, i.e., a steel plate, weakened by a semi-elliptical surface crack, which is under the action of dynamic loads in a 3% sodium chloride solution. The insignificant increase in the crack’s initial size is proven to greatly reduce the period of its subcritical growth. The developed model was applied to define the residual life of thin-walled elements of structures with surface cracks.

Słowa kluczowe

EN

structure element; surface cracks; kinetic diagrams; crack propagation; corrosive-fatigue crack; durability of vehicle

PL

element konstrukcji; pęknięcia powierzchni; diagram kinetyczny; propagacja pęknięć; pęknięcia korozyjno-zmęczeniowe; obciążenie pojazdu

• Wydawca: Wydawnictwo Politechniki Śląskiej
• Czasopismo: Zeszyty Naukowe. Transport / Politechnika Śląska
• Rocznik: 2018
• Tom: z. 101
• Strony: 47--57
• Opis fizyczny: Bibliogr. 22 poz.

Twórcy

autor

Droździel P.

• Lublin University of Technology, Faculty of Mechanical Engineering, Nadbystrzycka Street 36, 20-618 Lublin, Poland

autor

Popovych P.

• Ternopil Ivan Pul’uj National Technical University, Department of transporting technology and mechanics, Ruska St. 56, 46001 Ternopil, Ukraine

autor

Vitenko T.

• Ternopil Ivan Pul’uj National Technical University, Department of Food Technologies Equipment, Ruska St. 56, 46001 Ternopil, Ukraine

autor

Shevchuk O.

• Ternopil Ivan Pul’uj National Technical University, Department of transporting technology and mechanics, Ruska St. 56, 46001 Ternopil, Ukraine

autor

Zolotyi R.

• Ternopil Ivan Pul’uj National Technical University, Department of transporting technology and mechanics, Ruska St. 56, 46001 Ternopil, Ukraine

autor

Kononchuk O.

• Ternopil Ivan Pul’uj National Technical University, Department of transporting technology and mechanics, Ruska St. 56, 46001 Ternopil, Ukraine

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