PSI - Issue 6

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ScienceDirect Available online at www.sciencedirect.com Av ilable o line at ww.sciencedire t.com ienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 6 (2017) 259–264 ScienceDirect Structural Integrity Procedia 00 (2017) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2017) 000 – 000

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XV Portuguese Conference on Fracture, PCF 2016, 10-12 February 2016, Paço de Arcos, Portugal Thermo-mechanical modeling of a high pressure turbine blade of an airplane gas turbine engine P. Brandão a , V. Infante b , A.M. Deus c * a Department of Mechanical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal b IDMEC, Department of Mechanical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal c CeFEMA, Department of Mechanical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal Abstract During their operation, modern aircraft engine components are subjected to increasingly demanding operating conditions, especially the high pressure turbine (HPT) blades. Such conditions cause these parts to undergo different types of time-dependent degradation, one of which is creep. A model using the finite element method (FEM) was developed, in order to be able to predict the creep behaviour of HPT blades. Flight data records (FDR) for a specific aircraft, provided by a commercial aviation company, were used to obtain thermal and mechanical data for three different flight cycles. In order to create the 3D model needed for the FEM analysis, a HPT blade scrap was scanned, and its chemical composition and material properties were obtained. The data that was gathered was fed into the FEM model and different simulations were run, first with a simplified 3D rectangular block shape, in order to better establish the model, and then with the real 3D mesh obtained from the blade scrap. The overall expected behaviour in terms of displacement was observed, in particular at the trailing edge of the blade. Therefore such a model can be useful in the goal of predicting turbine blade life, given a set of FDR data. Copyright © 2017 The Auth rs. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. Investigation of the Elastoplastic and Strength Properties of the Magnesium Alloy AZ31B under Quasi-st tic and Dynamic Loading Svetlana Atroshenko a,b * ,Yuri Sud’enkov b , Ivan Smirnov b , Shao Wen Zhu c , Nikita Morozov b a IPME RAS, V.O., Bolshoy, 61, St.Petersburg, 199178, Russia b SPbSU, Universitetskaya Embankment, 7/9, St.-Petersburg,199034, Russia; c HIT, 92 Xidazhi St, Harbin, 150001, China Abstract The heat release in the quasi-static tension of the magnesium alloy AZ31B is analyzed as a function of the strain rate and it is shown that with increasing deformation rate the fraction of energy going to structural transformations in materials decreases. The main factor affecting the thermodynamics of deformation is the inertia of the structural transformations processes. The magnesium alloy was studied under dynamic loading under conditions of electrical explosion of conductors. The spall strength of the alloy AZ31B is determined. © 201 7 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. Keywords: magnesium alloy AZ31B; heat release; electrical explosion of conductors, spall strength XXVII International Conference “Mathematical and Computer Simulations in Mechanics of Solids and Structures”. Fundamentals of Static and Dynamic Fracture (MCM 2017) Investigation of the Elastoplastic and Str ngth Properties of the Magnesium Alloy AZ31B under Quasi-static and Dynamic Loading Svetlana Atroshenko a,b * ,Yuri Sud’enkov b , Ivan Smirnov b , Shao Wen Zhu c , Nikita Morozov b a IPME RAS, V.O., Bolshoy, 61, St.Petersburg, 199178, Russia b SPbSU, Universitetskaya Embankment, 7/9, St.-Petersburg,199034, Russia; c HIT, 92 Xidazhi St, Harbin, 150001, China Abstract The he t rele se in the quasi-static te sion of the magnesium alloy AZ31B is analyzed as a function of the strain rate and it is shown that with increasing deformatio rate the fractio of energy going to stru tural transformations in materials decreases. The main factor affecting the thermodynamics of deformation is the inertia of the structural transformations processes. The magnesium alloy was studied under dynamic loading under conditions of electrical explosion of conductors. The spall strength of the alloy AZ31B is determined. © 201 7 The Authors. Published by Elsevier B.V. P er-review u der resp nsibility of the MCM 2017 organizers. Keywords: magnesium alloy AZ31B; heat release; electrical explosion of conductors, spall strength XXVII International Conference “Mathematical and Computer Simulations in Mechanics of Solids and Structures”. Fundamentals of Static and Dynamic Fracture (MCM 2017)

Keywords: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation.

* Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt 2452- 3216 © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. 2452- 3216 © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. * Svetlana Atroshenko. Tel.: +7-812-321-4765; fax: +7-812-321-4771. E-mail address: satroshe@mail.ru * Svetlana Atroshenko. Tel.: +7-812-321-4765; fax: +7-812-321-4771. E-mail address: satroshe@mail.ru

2452-3216 Copyright  2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the MCM 2017 organizers. 10.1016/j.prostr.2017.11.039

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