压力容器
壓力容器
압력용기
Pressure Vessel Technology
2015年
9期
33-38
,共6页
董智%覃文良%马全%崔振宁%陈曦
董智%覃文良%馬全%崔振寧%陳晞
동지%담문량%마전%최진저%진희
有限元%高温%螺栓%法兰%垫片应力
有限元%高溫%螺栓%法蘭%墊片應力
유한원%고온%라전%법란%점편응력
FEA%high temperatures%bolt%flange%gasket stress
采用有限元法对高温下螺栓法兰联接密封结构进行三维数值分析。分析结果表明,在稳态温度场下,螺栓法兰联接密封结构在内压作用下垫片应力降低,随着温度的升高,法兰转角增大,垫片应力持续减小;在螺栓预紧力、内压以及温度载荷的作用下,螺栓法兰联接密封结构的螺栓应力、垫片平均应力以及法兰转角基本呈线性变化。
採用有限元法對高溫下螺栓法蘭聯接密封結構進行三維數值分析。分析結果錶明,在穩態溫度場下,螺栓法蘭聯接密封結構在內壓作用下墊片應力降低,隨著溫度的升高,法蘭轉角增大,墊片應力持續減小;在螺栓預緊力、內壓以及溫度載荷的作用下,螺栓法蘭聯接密封結構的螺栓應力、墊片平均應力以及法蘭轉角基本呈線性變化。
채용유한원법대고온하라전법란련접밀봉결구진행삼유수치분석。분석결과표명,재은태온도장하,라전법란련접밀봉결구재내압작용하점편응력강저,수착온도적승고,법란전각증대,점편응력지속감소;재라전예긴력、내압이급온도재하적작용하,라전법란련접밀봉결구적라전응력、점편평균응력이급법란전각기본정선성변화。
FEA was used to do three-dimensional numerical analysis of bolt-flange sealing structure at high temperatures.The results showed that,under steady-state temperature field,the gasket stress of the bolt-flange sealing structure decreased because of internal pressure effect.As the temperature rose,angular rotation of the flange increased,and gasket stress consistently decreased.Under the effect of bolt preload, the internal pressure and the temperature load,the bolt stress and the average gasket stress of bolt-flange sealing structure,as well as angular rotation of the flange,showed linear change basically.