压力容器
壓力容器
압력용기
2014年
6期
34-39,69
,共7页
周向斜接管%弹性应力分析%等效应力集中系数
週嚮斜接管%彈性應力分析%等效應力集中繫數
주향사접관%탄성응력분석%등효응력집중계수
hillside nozzle%elastic stress analysis%equivalent stress concentration factor
周向斜接管结构应用广泛,但相对于径向和轴向斜接管结构,尚缺乏完整的设计方法研究。采用有限元法较为系统地计算了不同结构参数下受内压圆柱壳周向斜接管结构的弹性应力,绘制了不同开孔参数下等效薄膜应力及等效薄膜加弯曲应力集中系数Km,K图。研究结果表明,内压下圆柱壳周向斜接管结构的等效薄膜应力及等效薄膜加弯曲应力集中系数均低于同参数时的圆柱壳径向接管结构,周向斜接管有限元解与Mershon公式得到的结果存在一定差异。该研究结果可为内压作用下周向斜接管结构工程设计提供依据。
週嚮斜接管結構應用廣汎,但相對于徑嚮和軸嚮斜接管結構,尚缺乏完整的設計方法研究。採用有限元法較為繫統地計算瞭不同結構參數下受內壓圓柱殼週嚮斜接管結構的彈性應力,繪製瞭不同開孔參數下等效薄膜應力及等效薄膜加彎麯應力集中繫數Km,K圖。研究結果錶明,內壓下圓柱殼週嚮斜接管結構的等效薄膜應力及等效薄膜加彎麯應力集中繫數均低于同參數時的圓柱殼徑嚮接管結構,週嚮斜接管有限元解與Mershon公式得到的結果存在一定差異。該研究結果可為內壓作用下週嚮斜接管結構工程設計提供依據。
주향사접관결구응용엄범,단상대우경향화축향사접관결구,상결핍완정적설계방법연구。채용유한원법교위계통지계산료불동결구삼수하수내압원주각주향사접관결구적탄성응력,회제료불동개공삼수하등효박막응력급등효박막가만곡응력집중계수Km,K도。연구결과표명,내압하원주각주향사접관결구적등효박막응력급등효박막가만곡응력집중계수균저우동삼수시적원주각경향접관결구,주향사접관유한원해여Mershon공식득도적결과존재일정차이。해연구결과가위내압작용하주향사접관결구공정설계제공의거。
The hillside nozzle structure is widely used in many fields,but it is still lack of systematic study of design methods compared with the radial nozzle structure and the axial oblique nozzle structure. The e-lastic stress of pressurized cylinder with hillside nozzle under different structural parameters were calculat-ed systematically by finite element method, and the curves of equivalent membrane stress concentration factor &the equivalent membrane plus bending stress concentration factor under different opening param-eters were drawn. The results show that the equivalent membrane stress concentration factor and the equiv-alent membrane plus bending stress concentration factor of the hillside nozzle structure were lower than those of the radial nozzle structure under the same parameters. There is a certain error between the results from Mershon formula and finite element solution. The results of this study may provide the basis for engi-neering design of the hillside nozzle structure.
