MICROVOIDS PRESSURES OF TRITIUM AND HELIUM-3 IN VESSEL WALL WITH THEIR ACCESSIONAL EFFECTS

摘要：

Tritium and helium-3 in the steel wall of a spherical pressure vessel (SWSPV) will cause hydrogen and helium embrittlements of the wall material,respectively,and thereby change tho earning capacity of the vessel.In this paper,the formulas of tritium and helium-3 pressures within microvoids which naturally exist in SWSPV were deduced,iheir spatio-temporal distributions laws were analytically obtained,and by using a representative volume element (RVE) model to perform finite element simulations,the effects of gas pressures on equivalent mechanical properties of the material were studied.It is found that the higher the gas pressures are,the lower the material ultimate strength,specific elongation and percentage contraction of area are,which is in good accordance with the phenomena of hydrogen embrittlements.

关键词： Spherical Pressure Vessel.Tritium,Helium-3,Microvoid Pressure

作者: Y.H.Yin Y.D.Liu Y.Tan

作者单位: Institute of Structural Mechanics,China Academy of Engineering Physics,P.O.Box 919-401,Mianyang,621900,China

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 144-147

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）