宁波大学学报(理工版)
寧波大學學報(理工版)
저파대학학보(리공판)
JOURNAL OF NINGBO UNIVERSITY (NSEE)
2013年
2期
83-88
,共6页
徐银良%蔡泽伟*%徐永春
徐銀良%蔡澤偉*%徐永春
서은량%채택위*%서영춘
圆锥-长组合壳体%径向应力%周向应力%有限元软件
圓錐-長組閤殼體%徑嚮應力%週嚮應力%有限元軟件
원추-장조합각체%경향응력%주향응력%유한원연건
combined shell of cone-long cylinder%radial stress%circumferential stress%ANSYS
利用研究组合壳体常用的应力法对已有的计算圆锥-长筒组合壳体连接处径向应力和周向应力通用公式进行验算,发现其周向应力公式不符合应力法原理.由此,提出修正函数对其进行修正.然后,利用有限元软件 ANSYS 对推导和修正公式的精确度进行检验,结果表明:公式计算值和 ANSYS 模拟值的偏差率基本在5%左右,证明该公式精度足以满足实际工程的要求,可为实际工程所使用.
利用研究組閤殼體常用的應力法對已有的計算圓錐-長筒組閤殼體連接處徑嚮應力和週嚮應力通用公式進行驗算,髮現其週嚮應力公式不符閤應力法原理.由此,提齣脩正函數對其進行脩正.然後,利用有限元軟件 ANSYS 對推導和脩正公式的精確度進行檢驗,結果錶明:公式計算值和 ANSYS 模擬值的偏差率基本在5%左右,證明該公式精度足以滿足實際工程的要求,可為實際工程所使用.
이용연구조합각체상용적응역법대이유적계산원추-장통조합각체련접처경향응력화주향응력통용공식진행험산,발현기주향응력공식불부합응역법원리.유차,제출수정함수대기진행수정.연후,이용유한원연건 ANSYS 대추도화수정공식적정학도진행검험,결과표명:공식계산치화 ANSYS 모의치적편차솔기본재5%좌우,증명해공식정도족이만족실제공정적요구,가위실제공정소사용.
The paper refers to the existing theory in calculating combined shell of cone-long cylinder’s radial stress and circumferential stress, and the force of law which is commonly used to analyze the combined shell. In this study, it is found that the function calculating circumferential stress does not match the force of law principle. In this paper, we then present a function that is proven to better describe the real-problem. Finally, using the finite element software ANSYS to inspect the function, and deviation rate is the basic formula to calculate the value of and ANSYS simulation values of about 5%, it shows that the proposed function meets the technical requirements, and can thus be applied for practical problems.