Speaker
Pivkov Andrew
(Mechanics and Control)
Description
The primary systems of future international thermonuclear experimental reactor (ITER) have to withstand major thermal, nuclear, electromagnetic and seismic loads. Therefor engineering analysis of elements of construction plays crucial role in realizing of the project as a whole. The paper describes calculations of spatial stress-strain state from major loads arising during operation upper vertical neutron camera (VNC) – subsystem of neutron diagnostics ITER, designed for measurement of plasma neutron source with spatial and transient resolution. It is in port-plug of upper port ITER #18.
Detectors of VNC located inside box type body. To provide neutron shield, original version of installation assumed to use composite structure containing tungsten plates, steel plates and granular boron carbide. According to results of thermal analysis, there was found that in this case arises the great overheating of installations body. That requires creating the complex cooling system. In this regard, there was develop new version of design, which has significant difference. The major difference is offset in depth to port from plasma, which led to decrease the neutron flux. New design consists of box type body, detector modules and steel matrix, which filling the inward space.
It was calculated transient thermal analysis for determination temperature distribution of VNC during normal operation. Based on the results from thermal analyses, it was calculated thermal-structural analysis. It was calculated transient electromagnetic analysis using Ansys Maxwell to determinate dynamic loads, which arose during plasma disruptions. Obtained ponderomotive forces transferred to structural analysis for determination of stress-strain state during the most dangerous disruption events.
Stress-strain state from seismic load determined using static and linear spectrum method. At finale stage, it was calculated structural analysis using applicable load combinations to construction.
Co-authors
Alexander Smirnov
(Mechanics and Control, Peter the Great St.Petersburg Polytechnic University, Saint Petersburg, Russian Federation)
Grigorij Nemtsev
(PC ITER, Moscow, Russian Federation)
Ivan Kirienko
(Mechanics and Control, Peter the Great St.Petersburg Polytechnic University, Saint Petersburg, Russian Federation)
Maksim Ivantsivsky
(BINP SB RAS, Novosibirsk, Russian Federation)
Oleg Shagniev
(Mechanics and Control, Peter the Great St.Petersburg Polytechnic University, Saint Petersburg, Russian Federation)
Pivkov Andrew
(Mechanics and Control, Peter the Great St.Petersburg Polytechnic University, Saint Petersburg, Russian Federation)
Victor Modestov
(Mechanics and Control, Peter the Great St.Petersburg Polytechnic University, Saint Petersburg, Russian Federation)
