应力分析及疲劳分析报告

1、预处理塔应力分析及疲劳分析报告编制:校对:审核:全国压力容器标准化技术委员会一九九八年九月一、载荷分析1.用户数据根据XX设计院所提供的设计图，计算基础数据如下:工作压力-0.070.65MPa设计压力0.85MPa工作温度40150 C设计温度170 C筒体材料16MnR封头材料16MnR筒体开口锻件16Mn （锻）腐蚀裕量C2=2mm预处理塔容器的结构参数见附图1:计算条件(1)强度计算条件:计算温度170C计算压力0.85 MPa材料在计算温度下的常数:筒体及封头16MnRS t=176MPa mEt=1.98X 105 MPa筒体开口锻件16MnS t=150MPa mEt=1.98X

2、 105 MPa材料在常温(20C)下的常数:Sm=188 MPaE=2.06X105 MPa注1：设计应力强度及弹性模量按JB4732-95(2)疲劳计算条件:设计寿命15年操作次数2500次/年总循环数15 x2500=37500 次载荷与时间的关系示意如下:P=0.65MPa压力时间P=-0.07MPa二、结构分析根据预处理塔的结构特点，应进行上封头、下封头及筒体开 孔三部分的应力分析，分别建立力学模型如下：1.上封头部分：（1）力学模型根据上封头的结构特点和载荷特性，采用了轴对称的力学模型。AIJSYS 5.4SEP 11 199809:05:48ELEMENTSUPRESS_ S77

3、7-6616-445S.ZZ9-365842-SSDIST=696.3Z-BUFFERWIMI： = Z4-0132-798Powe r G-r aphi c sEFACET=1ZV =1 *DIST=255.702ZV =1XF =1179YF =E83图1:预处理塔上封头力学模型（2）边界条件预处理塔上封头边界条件的位置和方向如图1所示。位移边界条件:与筒体相连且在Y=0处：Y=0力边界条件：壳体内压P=0.85MPa。中心接管处的边界等效压力P=8.877MPa。（3）单元选择采用ANSYS 5.4有限元分析软件提供的轴对称8节点等参元 （82）进行网格划分（如图1）。2.下封头部分：（

4、1）力学模型根据下封头的结构特点和载荷特性，采用了轴对称的力学模型。图2：预处理塔下封头力学模型(2)边界条件预处理塔下封头边界条件的位置和方向如图2所示。位移边界条件：裙座根部：AY=0力边界条件：壳体内压P=0.85MPa。中心接管处的边界等效压力P=8.93MPa,托架处(壳内物料重)的边界等效压力P=1.54MPa,筒体直边端处的边界等效压力P=2.72MPa,(3)单元选择采用ANSYS 5.4有限元分析软件提供的轴对称8节点等参元 (82)进行网格划分(如图2)。3.筒体开孔部分：力学模型根据筒体的结构特性和载荷特性，力学模型关于XOZ平面近似 对称(无开孔部分为应力均匀区)，关于

5、YOZ平面对称，只需计算 结构的四分之一。边界条件柱壳开孔边界条件的位置和方向如图3所示。位移边界条件：轴对称约束；Z=0时，AZ=0力边界条件：壳体内压P=0.85MPa；筒体端的边界等效应力为: 52.91MPa,筒体端的边界等效应力为：3.94单元选择采用ANSYS 5.4有限元分析软件提供的8节点实体元（45）进 行网格划分（如图3）。图3：预处理塔筒体开孔力学模型三、应力分析结果(1 )预处理塔上封头部分:AJISYS 5.4SEP 8 199815:08:57NODAL SOLUTIONSTEP = 1SUB =1TIME=1SINT (A7G)PowerGraphics EFAC

6、ET=1 A7KES=MatDMX =.316517SMN =8.903SMX =169.7028.903| 26.77|1 44.636|1 62.503| 80.369| 98.2361 116.102|1 133.969151.835169.7028.90326.77169.702图4：预处理塔上封头变形图及应力分布图(2 ) 预处理塔下封头部分:A1JSYS 5 一 4SEP S 199821.143186.89720:19:40 NODAL SOLUTION STEP=1 SUE =1 TIHE=1 SINT (AVG) PowerGraphice EFACET=1 AVRES=Ma

7、t DMX =3.191 SMN =.423666 SMX =136.397 . 4Z3666 |1Zl.143|141.86Z|16Z.S8183.301 104.OZ 1Z4.739 145.458 |1166.1771S6.897图5 :预处理塔下封头变形图及应力分布图(3 ) 预处理塔筒体开孔部分:S INTEFACET=1110.324136.247162.17188.093214.016-939WLiDwL 30LUT lull3TEP=1图6 :预处理塔筒体开孔变形图及应力分布图四、强度评定在下面的强度评定中，二次应力归于一次应力考虑，这 是一种保守的算法。预处理塔上封头部分：分

8、析点（A、B）路径见图7分析点的应力强度值见附录1和附录2。A点：总体薄膜应力强度：S广90.23 Smt =176MPa局部薄膜应力强度：S；广99.59 立=176MPa局部薄膜加局部弯曲应力强度：S，= 153.7 1.5Smt =264MPaB点：总体薄膜应力强度：S广90.23 Smt =176MPa局部薄膜应力强度：S；广135.5 立=176MPaS 5.4 8 1998 1:10L SOLUTION =1 =1 =1(AVG)局部薄膜加局部弯曲应力强度：S：广161.2 1.5Smt =264MPa=.316517 =8.903 =169.702 8.903 26. 77 44

9、.636 62.503 80.369 98.236116.10Z 133.969 151.835 169.70Z 8.903 Z6. 77 169.70Z图7：预处理塔上封头分析点路径(2):预处理塔下封头部分 分析点(C、D)路径见图8分析点的应力强度值见附录3和附录4。C占：八、：总体薄膜应力强度：S广98.9Smt =176MPa局部薄膜应力强度：S；广105.1 Smt =176MPa局部薄膜加局部弯曲应力强度：S：广157.1 1.5Smt =264MPaD点：总体薄膜应力强度：S广98.9 Smt =176MPa局部薄膜应力强度：S：= 67.21 Smt =176MPa局部薄膜加

10、局部弯曲应力强度：&广120.5 1.5Smt =264MPaNODAL SOLUTION图8：预处理塔下封头分析点路径(3 )预处理塔筒体开孔部分:分析点(E、F)路径见图9分析点的应力强度值见附录5和附录6。E点：总体薄膜应力强度：S广120.8 Smt =176MPa局部薄膜应力强度：S：= 130.2 S，=176MPa局部薄膜加局部弯曲应力强度：&广223.5 1.5Smt =264MPaF占.：总体薄膜应力强度：S广120.8 Smt =176MPa局部薄膜应力强度：S：= 150.8 S；t =176MPa局部薄膜加局部弯曲应力强度：Siiz= 212.1 1.5Smt =264

11、MPa图9：筒体开孔部分分析点路径该容器强度校核合格。五、疲劳强度评论对应力最大位置进行疲劳分析，分析结果见附录7、附录8和附 录9分析结果表明：预处理塔上封头部分积累使用系数=0.00261 1.0预处理塔下封头部分积累使用系数=0.00683 1.0预处理塔筒体开孔部分积累使用系数=0.11123 1.0疲劳校核合格。六、结论所有A、B类焊缝需100%无损检测，合格标准按JB4732-95 的规定。锻件和封头、锻件和筒体小园弧加工完成后，需进行表面磁 粉检测。封头接管、筒体接管处过渡园弧半径至少为5mm。所有对接焊缝需打磨至与母材平齐。本设备的设计、制造均按JB4732-95标准进行。在达

12、到上述要求后，预处理塔在设计条件下的强度是满足JB4732-95标准规范要求的。PRINT LINEARIZED STRESS THROUGH A SECTION DEFINED BY LPATH COMMAND. DSYS= 0* POST1 LINEARIZED STRESS LISTING * MEMBRANE *SXSYSZSXYSYZSXZ93.186.213102.4-17.420.00000.0000S1S2S3SINTSEQV102.496.542.85299.5996.78SX* BENDING * I=INSIDE C=CENTER O=OUTSIDESXZSYSZSXYS

13、YZI59.378.07416.36-16.170.00000.0000C0.00000.00000.00000.00000.00000.0000O-59.37-8.074-16.3616.170.00000.0000S1S2S3SINTSEQVI64.0416.363.40360.6455.31C0.00000.00000.00000.00000.0000O-3.403-16.36-64.0460.6455.31* MEMBRANEPLUS BENDING* I=INSIDEC=CENTER O=OUTSIDESXSYSZSXYSYZSXZI152.614.29118.8-33.590.00

14、000.0000C93.186.213102.4-17.420.00000.0000O33.81-1.86186.09-1.2550.00000.0000S1S2S3SINTSEQVI160.3118.86.557153.7137.7C102.496.542.85299.5996.78O86.0933.85-1.90587.9976.65* TOTAL *I=INSIDE C=CENTER O=OUTSIDESXSYSZSXYSYZSXZI167.817.08124.2-38.990.00000.0000C89.435.011101.0-14.800.00000.0000O38.150.223

15、388.02-6.5060.00000.0000S1S2S3SINTSEQVTEMPI177.3124.27.590169.7150.40.0000C101.091.942.49298.4794.28O88.0239.24-0.861688.8877.100.0000PRINT LINEARIZED STRESS THROUGH A SECTION DEFINED BY LPATH COMMAND. DSYS= 0* POST1 LINEARIZED STRESSLISTING * MEMBRANE*SXSYSZSXYSYZSXZ8.44348.55-78.34-20.420.00000.00

16、00S1S2S3SINTSEQV57.12-0.1259-78.34135.5117.8* BENDING * I=INSIDE C=CENTER O=OUTSIDESXSYSZSXYSYZSXZI5.12730.6510.28-12.900.00000.0000C0.00000.00000.00000.00000.00000.0000O-5.127-30.65-10.2812.900.00000.0000S1S2S3SINTSEQVI36.0410.28-0.258836.3032.34C0.00000.00000.00000.00000.0000O0.2588-10.28-36.0436.

17、3032.34* MEMBRANEPLUS BENDING* I=INSIDEC=CENTER O=OUTSIDESXSYSZSXYSYZSXZI13.5779.20-68.06-33.330.00000.0000C8.44348.55-78.34-20.420.00000.0000O3.31617.90-88.62-7.5210.00000.0000S1S2S3SINTSEQVI93.16-0.3846-68.06161.2140.2C57.12-0.1259-78.34135.5117.8O21.080.1326-88.62109.7100.9* TOTAL *I=INSIDE C=CEN

18、TER O=OUTSIDESXSYSZSXYSYZSXZI13.6379.09-68.07-33.630.00000.0000C8.42248.62-78.33-20.280.00000.0000O3.34317.75-88.64-7.7900.00000.0000S1S2S3SINTSEQVTEMPI93.28-0.5682-68.07161.4140.40.0000C57.07-0.3256E-01-78.33135.4117.7O21.16-0.6328E-01-88.64109.8100.90.0000PRINT LINEARIZED STRESS THROUGH A SECTION

19、DEFINED BY LPATH COMMAND. DSYS= 0* POST1 LINEARIZED STRESS LISTING * MEMBRANE *SXSYSZSXYSYZSXZ93.506.536109.3-14.360.00000.0000S1S2S3SINTSEQV109.395.814.225105.199.04* BENDING * I=INSIDE C=CENTER O=OUTSIDESXSYSZSXYSYZSXZI65.069.64316.96-18.860.00000.0000C0.00000.00000.00000.00000.00000.0000O-65.06-9

20、.643-16.9618.860.00000.0000S1S2S3SINTSEQVI70.8716.963.83267.0461.53C0.00000.00000.00000.00000.0000O-3.832-16.96-70.8767.0461.53* MEMBRANEPLUS BENDING* I=INSIDEC=CENTER O=OUTSIDESXSYSZSXYSYZSXZI158.616.18126.3-33.230.00000.0000C93.506.536109.3-14.360.00000.0000O28.44-3.10692.374.4980.00000.0000S1S2S3

21、SINTSEQVI165.9126.38.807157.1141.5C109.395.814.225105.199.04O92.3729.07-3.73596.1184.62* TOTAL *I=INSIDE C=CENTER O=OUTSIDESXSYSZSXYSYZSXZI180.115.76132.6-44.550.00000.0000C89.195.418107.7-9.3790.00000.0000O34.35-0.839894.82-4.5180.00000.0000S1S2S3SINTSEQVTEMPI191.4132.64.458186.9165.50.0000C107.790

22、.234.381103.395.80O94.8234.92-1.41196.2384.170.0000PRINT LINEARIZED STRESS THROUGH A SECTION DEFINED BY LPATH COMMAND. DSYS= 0* POST1 LINEARIZED STRESS LISTING * MEMBRANE *SXSYSZSXYSYZSXZ23.12-1.643-42.58-6.3050.00000.0000S1S2S3SINTSEQV24.63-3.156-42.5867.2158.50* BENDING * I=INSIDE C=CENTER O=OUTSI

23、DESXSYSZSXYSYZSXZI1.511-93.87-27.011.9440.00000.0000C0.00000.00000.00000.00000.00000.0000O-1.51193.8727.01-1.9440.00000.0000S1S2S3SINTSEQVI1.550-27.01-93.9195.4684.87C0.00000.00000.00000.00000.0000O93.9127.01-1.55095.4684.87* MEMBRANEPLUS BENDING* I=INSIDEC=CENTER O=OUTSIDESXSYSZSXYSYZSXZI24.63-95.5

24、2-69.59-4.3600.00000.0000C23.12-1.643-42.58-6.3050.00000.0000O21.6192.23-15.57-8.2490.00000.0000S1S2S3SINTSEQVI24.78-69.59-95.68120.5109.8C24.63-3.156-42.5867.2158.50O93.1820.65-15.57108.895.92* TOTAL *I=INSIDE C=CENTER O=OUTSIDESXSYSZSXYSYZSXZI-1.141-173.3-100.6-0.26860.00000.0000C67.46100.61.323-1

25、7.910.00000.0000O-1.058-4.521-51.300.43450.00000.0000S1S2S3SINTSEQVTEMPI-1.141-100.6-173.3172.2149.70.0000C108.459.631.323107.192.87O-1.004-4.575-51.3050.3048.610.0000PRINT LINEARIZED STRESS THROUGH A SECTION DEFINED BY LPATH COMMAND. DSYS= 0* POST1LINEARIZEDSTRESS LISTING*MEMBRANE *SXSYSZSXYSYZSXZ1

26、33.83.7519.4570.2262E-010.54301.408S1S2S3SINTSEQV133.99.4933.700130.2127.4* BENDING * I=INSIDE C=CENTER O=OUTSIDESXSYSZSXYSYZSXZI93.130.8443E-01-0.3746-1.224-1.9540.2028E-01C0.00000.00000.00000.00000.00000.0000O-93.13-0.8443E-010.37461.2241.954-0.2028E-01S1S2S3SINTSEQVI93.141.813-2.11995.2693.36C0.0

27、0000.00000.00000.00000.0000O2.119-1.813-93.1495.2693.36* MEMBRANEPLUS BENDING* I=INSIDEC=CENTER O=OUTSIDESXSYSZSXYSYZSXZI227.03.8369.083-1.202-1.4111.428C133.83.7519.4570.2262E-010.54301.408O40.723.6679.8321.2472.4971.388S1S2S3SINTSEQVI227.09.4253.477223.5220.6C133.99.4933.700130.2127.4O40.8310.622.

28、76938.0634.80* TOTAL * I=INSIDE C=CENTER O=OUTSIDESXSYSZSXYSYZSXZI238.91.027-0.7490-0.30440.51610.2237C129.17.63212.91-0.6043-0.6858E-011.784O48.32-10.660.26382.813-2.065-0.1623S1S2S3SINTSEQVTEMPI238.91.165-0.8885239.8238.80.0000C129.112.887.629121.5118.9O48.460.6319-11.1759.6354.690.0000* MEMBRANE

29、*SXSYSZSXYSYZSXZ153.15.00919.840.2354E-01-6.877-0.3150E-01S1S2S3SINTSEQV153.122.542.310150.8141.8* BENDING * I=INSIDE C=CENTER O=OUTSIDESXSYSZSXYSYZSXZI55.52-4.858-23.030.1820E-017.840-0.1708E-01C0.00000.00000.00000.00000.00000.0000O-55.524.85823.03-0.1820E-01-7.8400.1708E-01S1S2S3SINTSEQVI55.52-1.9

30、44-25.9581.4772.51C0.00000.00000.00000.00000.0000O25.951.944-55.5281.4772.51* MEMBRANEPLUS BENDING* I=INSIDEC=CENTER O=OUTSIDESXSYSZSXYSYZSXZI208.70.1503-3.1970.4173E-010.9630-0.4858E-01C153.15.00919.840.2354E-01-6.877-0.3150E-01O97.629.86742.870.5339E-02-14.72-0.1442E-01S1S2S3SINTSEQVI208.70.4076-3

31、.454212.1210.2C153.122.542.310150.8141.8O97.6248.484.25793.3680.89* TOTAL *I=INSIDE C=CENTER O=OUTSIDESXSYSZSXYSYZSXZI209.8-0.4435-0.34280.3835E-01-0.3374-0.1362C151.85.39418.110.1406E-01-6.418-0.3422E-01O102.49.92651.81-0.2569-22.240.2417S1S2S3SINTSEQVTEMPI209.8-0.5213E-01-0.7343210.6210.20.0000C15

32、1.820.792.718149.1140.9O102.461.410.3203102.188.950.0000LOCATION 1 IS NODE 258STRESS CONC. FACTORS (X,Y,Z)LABEL = Max Point=1.0001.0001.000STORE FATIGUE STRESSES FOR NODE258EVENT 1LOAD1STORE FATIGUE STRESSES FOR NODE258EVENT 1LOAD2EVENT 1 HAS37500 CYCLES,LABEL = Max PointSCALEFACTOR =1.0000PERFORM FATIGUE CALCULATION AT LOCATION1 NODE258* POST1 FATIGUE CALCULATION *LOCATION 1 NODE 258Max PointEVENT/LOADS 11 Max PointAND12 MaxPointPRODUCE ALTERNATING SI CYCLES USED/ALLOWED =(SALT) =71.874 WITH TEMP =0.0000037500/ 0.1439E+08 = PARTIAL USAGE =0.00261