Extension of the concept of limit loads for 3D cases for a centrally cracked plate in tension

Graba, M.

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Tytuł artykułu

Extension of the concept of limit loads for 3D cases for a centrally cracked plate in tension

Autorzy

Graba M.

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Warianty tytułu

Rozszerzenie koncepcji obciążeń granicznych na przypadki trójwymiarowe dla płyty z centralną szczeliną poddanej rozciąganiu

Języki publikacji

Abstrakty

In the paper, the verification of the limit load solutions for a centrally cracked plate under tension (CC(T)) is presented using FEM calculations. Numerical calculations and analysis of the obtained FEM results were used to recalculation of the existing limit load formulas proposed by EPRI procedures for plane strain and plane stress. After verification of the EPRI solutions, three dimensional FEM calculation was done to determine the limit loads for 3D cases of CC(T) specimens. The measurable effect of the paper is a catalogue of numerical solutions and their approximations, which may be useful in the engineering analysis.

W pracy przedstawiono numeryczną weryfikację wzorów pozwalających wyznaczyć obciążenie graniczne dla przypadku płyty z centralną szczeliną poddanej rozciąganiu (próbka CC(T)) dla przypadków płaskiego stanu naprężenia i płaskiego stanu odkształcenia. W kolejnym kroku dokonano rozszerzenia koncepcji wyznaczania obciążeń granicznych na przypadki trójwymiarowe, uwzględniając efekt grubości, wykorzystując szereg trójwymiarowych obliczeń numerycznych. Uzyskane wyniki aproksymowano wzorami analitycznymi. Efektem wymiernym pracy jest katalog rozwiązań numerycznych i ich aproksymacji, pozwalający oszacować obciążenie graniczne dla trójwymiarowego elementu konstrukcyjnego (z uwzględnieniem grubości), bez konieczności prowadzenia czasochłonnych obliczeń numerycznych. Zaprezentowane w pracy wyniki mogą znaleźć zastosowanie w analizie inżynierskiej (np. analiza FAD lub analiza CDF).

Słowa kluczowe

fracture mechanics cracks FEM limits loads load-line displacement CC(T) specimen

Wydawca

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Czasopismo

Journal of Theoretical and Applied Mechanics

Rocznik

2013

Tom

Vol. 51 nr 2

Strony

349--362

Opis fizyczny

Bibliogr. 38 poz., rys., tab.

Twórcy

autor

Graba M.

mgraba@tu.kielce.pl

Kielce University of Technology, Faculty of Mechatronics and Machine Design, Kielce, Poland

Bibliografia

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Bibliografia

Identyfikator YADDA

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