船体强度-课程设计分析

1、船体强度与结构结构设计课程设计.2.2.3船舶在静水和波涛上剪力弯矩计算3总纵强度计算19331/36船体强度与结构结构设计课程设计一、课程设计任务书综合应用船舶与海洋结构物强度的相关知识，完成船舶船体中剖面的结构设计，并按相关规范要求进行总纵强度的校核。二、课程设计主要内容（一）、依据相关规范要求完成船舶舯剖面结构设计（二）、船体总纵强度的校核1、船舶在静水中均衡地址的确定2、船舶在波涛中均衡地址的确定3、船舶重量分布曲线的确定4、船舶浮力分布曲线的确定5、船舶载荷分布曲线的确定6、船舶剪力和弯矩分布曲线的确定7、剖面特征计算8、许用应力的确定9、总纵曲折应力校核10、极限强度校核三、船舶数

2、据资料船舶主尺度：总长：LOA128.40m设计水线长：LWL120.04m垂线间长：LPP115.50m计算船长：L115.50m型宽：B19.50m2/36船体强度与结构结构设计课程设计型深：D10.20m设计吃水：d8.30m方型系数：CB0.653四、课程设计主要步骤（一）船舶在静水和波涛上剪力弯矩计算主要数据：计算船长L115.50m船宽B19.50m海水比重1.025t/m3设计吃水d8.30m采纳满载出港的装载状况作为计算基础，由设计任务书所给的参照数值可获取以下参数：排水量12657.91t均匀吃水dm8.18m重心纵向地址xg3.946m浮心纵向坐标xb0.23m漂心纵向坐标

3、xf4m水线面积2Aw1803.902m纵稳心半径BML121.76m此中的水线面积Aw是由所给的厘米吃水吨数TPC18.49t求出，公式为：Aw100TPC。纵稳心半径BML是由所给的厘米纵倾力矩MTC133.44t/m求出的，公式为：BML100MTCLPP。3/36船体强度与结构结构设计课程设计波型和波涛参数选择：波长：L115.5m波高：h4m坦谷波垂向坐标值采纳余弦级数睁开式计算：2r24yBrcosx(1cosx)各理论站从坦谷波波面到波轴线垂向坐标值经计算列入下表：中垂站109876543210号1011121314151617181920坦谷波垂向坐2.5002.4102.14

4、01.6921.0800.340-0.465-1.247-1.905-2.345-2.500标中拱站012345678910号2019181716151413121110注：表中yB值由波轴线向下为正，向上为负。满载出港状态的弯矩和剪力计算船舶纵倾调整1）船舶在静水中均衡地址的确定第一次近似：首吃水：df1xgxb1xf)6.295mdmR(2尾吃水：da1xgxb1xf)9.820mdmR(2排水体积：V12349.18m3第二次近似：首吃水：df2VV1xgxb11df1AR(xf)6.506m2尾吃水：da2VV1xgxb1(1da1ARxf)10.078m2VV20.154%0.1%-

5、0.5%满足设计要求Vxgxb1L0.039%s1115.76256.669784557.0079-517.658s25.619784469.3201-436.165s37.019784586.2371-544.8222245.995421/36船体强度与结构结构设计课程设计6.319784527.7786-490.4932245.99557.719784644.6956-599.151577.33367.019784586.2371-544.8222088.0376.319784527.7786-490.4932088.038138.9156.669784557.0079-517.658s9

6、5.619784469.3201-436.165s100.56255.469784456.7933-424.5232378.932114.894784408.7738-379.8962383.877122375.531304.86254.169784348.2275-323.627s13569.0766674.169784348.2275-323.627s144.169784348.2275-323.6272339.862152399.0273.444784287.6813-267.3582339.862162302.6842.719784227.135-211.08945017262.026

7、6671.01978485.16434-79.1478250.239718491.31.01978485.16434-79.1478879.748819-0.68022-56.806352.79315355.555620103.68-1.88022-157.021145.9279346.996621172.8-1.88022-157.021145.9279963.879422-3.08022-257.235239.0627804.315523160.261214-4.14381-346.058321.61041314.37824-4.14381-346.058321.61042002564.6

8、866-3.19022-266.422247.60012351.244262353.9582353.85483.9808-4.46022-372.482346.16782353.449272356.2782356.170.19531251.851784154.6464-143.721s281.851784154.6464-143.721s29-3.08022-257.235239.06271816.47630-4.57272-381.877354.8992s3116.875-3.83022-319.869297.2725123233.75-3.83022-319.869297.27251233

9、33.75-3.83022-319.869297.2725123433.07949-3.83022-319.869297.272518.895535-4.58022-382.504355.48122585.56425计算中取比较轴距基线4.6m处。22/36船体强度与结构结构设计课程设计中和轴距比较轴距离161.330300810.019784028mm8154.572973中和轴距基线为4.58m。剖面对水平中和轴的惯性矩2I2161.3303008143337.78154.572973I286669.0275mcm2m2剖面上的应力iMZi103mkgf/cm2（各构件应力见以下计算）Ii

10、2欧拉应力计算板的欧拉应力计算纵骨架式板格(四边自由支持)按下式计算800(100t)2b计算见下表。纵骨架式编号板长边板短边板厚t,cm(100t/b)2板的欧拉应力E，a,cmb,cmkgf/cm21中抗扭箱上边板150251.536288003中抗扭箱下边板150251.5362880010上甲板150752.813.9377777811150.2213纵舱壁板15072.51.54.2806183123424.49514舷顶列板15072.52.814.9155766911932.4624舭列板1501201.51.5625125025舭龙骨1501000.50.2520030内底板a

11、150731.12.2705948581816.476b15066.51.12.7361637182188.931c15066.751.12.715706492172.56531船底板a150731.54.2221805223377.744b15066.51.55.0879077394070.326c15066.751.55.0498674414039.894横骨架式板格(四边自由支持)按下式计算100t)2(1s22E200(b2)s23/36船体强度与结构结构设计课程设计计算见下表。横骨架式编号板短边板长边板厚t,cm(100t/s)2s/b(1+(s/b)2)2板的欧拉应力E，s,cmb

12、,cmkgf/cm217A平台751500.91.440.51.562545018纵舱壁板753400.81.1377780.2205882351.099686250.23967119舷侧板上列板753401.540.2205882351.099686879.74884320B平台751500.81.1377780.51.5625355.55555621纵舱壁板752400.91.440.31251.204849346.99658222舷侧板以下板752401.540.31251.204849963.87939523C平台751491.22.560.5033557051.570929804.3

13、1552纵骨的稳固性计算在强度计算中，纵向骨材的理论欧拉应力，按两端自由支持的单跨梁，其欧拉应力按下式计算E2Ei2(fbet)ai-包含带板的骨材剖面惯性矩a-骨材跨距f-骨材自己的剖面积eb-带板有效宽度t-带板厚度E-资料的弹性模量计算纵骨稳固性的带板，当其遇到的压应力大于临界应力时候应作折减。此时带板宽度按下式计算beb(1)2be-带板有效宽度b-骨材间距cr-折减系数，大于1不折减E当E超出资料的比率极限时，骨材的临界应力按下式计算当当EE1s,crE,21s,crs(1s)24E24/36船体强度与结构结构设计课程设计纵骨跨距和带纵骨间板折减板折带板有效宽构件剖面积至参照轴距静力

14、矩纵骨的计算板尺寸系数减系距(cm)度(cm)2离(cm)3(cmcm)(拱)数(垂)(cm)(cm)4号纵骨中抗扭箱纵骨1507012.88102.4对应带板中抗扭箱围板701.5170105-0.75-78.755号纵骨中抗扭箱纵骨1507012.88102.4对应带板中抗扭箱围板701.5170105-0.75-78.757号纵骨舱口围板增强筋3007012.88102.4对应带板舱口围壁板701.8170126-0.9-113.48号纵骨舱口围板增强筋3007012.88102.4对应带板舱口围壁板701.8170126-0.9-113.411号纵骨上甲板纵骨1507575151125

15、对应带板上甲板752.8175210-1.4-29412号纵骨纵舱壁纵骨15072.54010400对应带板纵舱壁板72.51.5172.5108.75-0.75-81.5625舷顶列版72.52.8172.5203-1.4-284.215号纵骨纵舱壁纵骨15072.512.88102.4对应带板纵舱壁板72.51.5172.5108.75-0.75-81.5625舷顶列版72.52.8172.5203-1.4-284.216号纵骨纵舱壁纵骨15072.512.88102.4对应带板纵舱壁板72.51.5172.5108.75-0.75-81.5625舷顶列版72.52.8172.5203-1

16、.4-284.226号纵骨a内底纵骨a150732211242对应带板a内底板a731.117380.3-0.55-44.16526号纵骨b内底纵骨b15066.52211242对应带板b内底板b66.51.1166.573.15-0.55-40.232526号纵骨c内底纵骨c15066.752211242对应带板c内底板c66.751.1166.7573.425-0.55-40.383827号纵骨a船底纵骨a150732412288对应带板a船底板a731.5173109.5-0.75-82.12527号纵骨b船底纵骨b15066.52412288对应带板b船底板b66.51.5166.59

17、9.75-0.75-74.812527号纵骨c船底纵骨c15066.752412288对应带板c船底板c66.751.5166.75100.125-0.75-75.0938惯性矩对中和轴惯纵骨2E纵骨欧拉纵骨临界应自己惯性矩i/A厚度应力骨的计算(cm4)a2纵性矩(cm)2力(kgf/cm2)(kgf/cm)819.2273.06666671166.2685989.9004125460.892554953.679350.3292245.9947214号纵骨中抗扭箱纵骨25/36船体强度与结构结构设计课程设计59.062519.6875对应带板中抗扭箱围板819.2273.0666667116

18、6.2685980.892554953.679350.3292245.9947215号纵骨中抗扭箱纵骨59.062519.68759.900412546对应带板中抗扭箱围板819.2273.06666671227.4749090.823138738.422088.032088.0301147号纵骨舱口围板增强筋102.0634.028.84347917对应带板舱口围壁板819.2273.06666671227.4749090.823138738.422088.032088.0301148号纵骨舱口围板增强筋102.0634.028.84347917对应带板舱口围壁板16875562520625

19、.778952.592554953.6768350.092378.93199611号纵骨上甲板纵骨411.6137.272.3711542对应带板上甲板400010666.6666714066.53208292554953.6789310.732383.87651812号纵骨纵舱壁纵骨61.1718820.39062594.5649215658850.512375.531225对应带板纵舱壁板397.88132.626666715141.9896362.31271453819.22184.5333333081.7236290.892554953.6723944.862339.86183515号

20、纵骨纵舱壁纵骨61.1718820.39062525.3535469314797152399.026839对应带板纵舱壁板397.88132.62666673381.08318815.66767001819.22184.5333333081.7236290.892554953.6723944.862339.86183516号纵骨纵舱壁纵骨61.1718820.39062525.3535469314797.152302.683947对应带板纵舱壁板397.88132.62666673381.08318815.667670012662887.33333333199.133637192554953.

21、6729534.552351.24354226号纵骨a内底纵骨a24.290758.09691666731.27207856对应带板a内底板a2662887.33333333150.985101192554953.67312762353.95830126号纵骨b内底纵骨b22.127887.37595833333.11597584对应带板b内底板b2662887.33333333152.96839192554953.6731205.492353.85427726号纵骨c内底纵骨c22.211067.403687533.04132449对应带板c内底板c345611524372.63799219

22、2554953.6730933.982353.44925427号纵骨a船底纵骨a61.5937520.5312532.75384263对应带板a船底板a345611524315.54858192554953.6732935.512356.27819327号纵骨b船底纵骨b56.1093818.70312534.87311983对应带板b船底板b345611524317.904857192554953.6732853.942356.16963427号纵骨c船底纵骨c56.3203118.773437534.78674608对应带板c船底板c3总纵曲折应力第二次近似计算由表可知，船体板架在中拱状态

23、时中桁材和第一、第二、第三旁桁材发生减缩。船底板架曲折应力计算（由中拱状态确立）货物重量（t）3450t水头高度h(m)10.680第八站吃水舱长（m）27舱宽16.5载荷（tf/m2）3.20289225626/36船体强度与结构结构设计课程设计构件名称带板宽度构成部分构件编号构件剖面积至参照轴距离静力矩(cm3)惯性矩(cm4)自己惯性矩(cm4)(mm)(cm2)(cm)内底板30321.215048180722700032.38767外底板3143800082.125中桁材2920腹板3290756750506250337500内底纵骨2666139917412751862662外底纵

24、骨277212864103683456987.2649689362537内底板30306.915046035690525030.94575外底板31418.500078.46875第一旁桁材2790腹板3318075135001012500337500内底纵骨2666139917412751862662外底纵骨2772128641036834561043.4695739547031内底板30293.1515043972.5659587529.55929外底板31399.7500074.95313第二旁桁材2665腹板3418075135001012500337500内底纵骨2666139917

25、412751862662外底纵骨2772128641036834561010.967510.59237652内底板30293.714943761.36520433.729.61475外底板31400.500075.09375第三旁桁材2670腹板35178.874.513320.6992384.7330794.9内底纵骨263313845546284521331外底纵骨2736124325184172894262067.98480413中拱最大弯矩作用在8站周边即NO3货舱内弯矩(tf.m)板架曲折应力(kgf/cm2)剖面对中和惯性矩外底剖面模数(cm3)内底剖面模数腹板剖面模数舱壁处跨度中

26、点舱壁处2跨度中点2-488.961167225.6743849382.2171181-176.4079015086968.2177297.3660422.7460422.74295.4437136.3587-488.961167-176.407901-479.23503221.1853984383.517015-177.0078534907964.5973605.7158904.3858904.38282.2904130.2879-479.23503-177.00785327/36船体强度与结构结构设计课程设计-474.485022218.993087380.7775507-175.7434

27、854729126.8270813.7956828.5656828.56269.643124.4506-474.485022-175.743485-511.34784236.0066953405.3933586-187.1046274390790.766638.7152830.7552830.75270.1489124.6841-511.34784-187.104627临界应力总纵曲折应力舱壁处E+跨度中点E+减缩系数E(kgf/cm2)1(kgf/cm2)2(kgf/cm2)2(kgf/cm2)1816.475887-257.23539551327.5147192042.155.160700

28、0547.938839112400-381.87724892782.2171182223.5927.2856320355.82279311512-319.869492723.03883271335.59210.0720257271.0491530.07202612188.930974-257.6507151709.6959442410.1166.635712019.3542112400-382.49380912783.5170152222.9927.2772864535.81183811512-319.869492732.76497016334.99210.1024323071.0472780

29、.10243212188.930974-257.6507151714.4459522407.9246.6541478539.345691112400-382.49380912780.7775512224.2577.2701243385.81514411512-319.869492737.51497826336.25650.1172821391.051230.11728212172.565192-257.6507151661.2173532408.5726.4475557639.348206112400-382.49380912805.3933592212.8957.3344804335.785

30、44111518.8955452-319.86949277.547705494331.79090.0235962031.037270.0235961剖面因素的计算构件名称构件构件尺寸(mmmm)剖面积-1减缩剖面距比较轴静矩惯性矩自己惯性矩编号积A(cm2)距离Z(m)AZ(cm2m)AZ2(cm2m2)i(cm2m2)第一次近似计算结果8154.573-161.3303008143337.705528/36船体强度与结构结构设计课程设计中桁材326(1500-3752)45-0.927974273-41.7588-3.85160.7715428-618.9716.875第一旁桁材3312(1

31、500-3752)90-0.897567693-80.7811-3.85311.0072055-1197.3833.75第二旁桁材3412(1500-3752)90-0.882717861-79.4446-3.85305.8617389-1177.5733.75第三旁桁材3512(1490-372.552)89.4-0.976403797-87.2905-3.85336.0684229-1293.8633.079497865.298952.3786093139167.4中和轴距比较轴距离1952.37860930.121086145mm7865.298中和轴距基线为4.721m。2I21139

32、167.4952.3786093剖面惯性矩7865.298I278104.1217mcm2m2第二次近似计算构件矩中和轴距离总纵曲折应力构件编号构件名称中拱Z(m)中垂Z(m)中拱(kgf/cm2)中垂(kgf/cm2)E或cr(kgf/cm2)上纤维7.5864147.727284653.0695532-599.7331中抗扭箱上边板7.5789147.719784652.4239225-599.15s2中抗扭箱围板6.5289146.669784562.0356252-517.658s3中抗扭箱下边板5.4789145.619784471.6473279-436.165s4中抗扭箱纵骨6.

33、8789147.019784592.1650576-544.8222245.9955中抗扭箱纵骨6.1789146.319784531.9061928-490.4932245.9956舱口围壁面板7.5789147.719784652.4239225-599.151577.3337舱口围板增强筋6.8789147.019784592.1650576-544.8222088.038舱口围板增强筋6.1789146.319784531.9061928-490.4932088.039舱口围壁板6.5289146.669784562.0356252-517.658s10上甲板5.4789145.619

34、784471.6473279-436.165s11上甲板纵骨5.3289145.469784458.734714-424.5232378.93212纵舱壁纵骨4.7539144.894784409.2363607-379.8962383.8772375.53113纵舱壁板4.0289144.169784346.8253936-323.627s14舷顶列板4.0289144.169784346.8253936-323.627s15纵舱壁纵骨4.0289144.169784346.8253936-323.6272339.8622399.02716纵舱壁纵骨3.3039143.444784284.4

35、144264-267.3582339.8622302.68417A平台板2.5789142.719784222.0034592-211.08945018纵舱壁板0.8789141.01978475.66050169-79.1478250.239719舷侧板上列板0.8789141.01978475.66050169-79.1478879.748820B平台板-0.82109-0.68022-70.6824558252.79315355.555621纵舱壁板-2.02109-1.88022-173.983367145.9279346.996622舷侧板以下板-2.02109-1.88022-17

36、3.983367145.9279963.879429/36船体强度与结构结构设计课程设计23C平台板-3.22109-3.08022-277.2842782239.0627804.315524舭列板-4.28468-4.14381-368.8423812321.61041314.37825舭龙骨-4.28468-4.14381-368.8423812321.610420026内底纵骨a-3.33109-3.19022-286.7535284247.60012351.244b2353.958c2353.85427船底纵骨a-4.60109-4.46022-396.0803261346.16782

37、353.449b2356.278c2356.1728中工字钢面板1.7109141.851784147.2824668-143.721s29中工字钢腹板1.7109141.851784147.2824668-143.721s30内底板-3.22109-3.08022-277.2842782239.06271816.47631船底板-4.71359-4.57272-405.7647865354.8992s32中桁材-3.97109-3.83022-341.8473477297.27251233第一旁桁材-3.97109-3.83022-341.8473477297.27251234第二旁桁材-3

38、.97109-3.83022-341.8473477297.27251235第三旁桁材-3.97109-3.83022-341.8473477297.272518.8955下纤维-4.72109-4.58022-406.4104172355.4812三、船体中剖面极限弯矩计算1极限弯矩作用下构件内的应力计算见下表。极限弯矩作用下的应力计算构件构件名称离中和轴距离(m)中拱应力(kgf/cm2)中垂应力(kgf/cm2)E或减缩系数编号cr(kgf/cm2)上纤维7.7272842400-24004中抗扭箱纵骨7.0197842180.259-2180.2591452245.99545中抗扭箱纵

39、骨6.3197841962.848-1962.8476982245.99556舱口围壁面板7.7197842397.671-2397.6705921577.33360.6578617舱口围板增强筋7.0197842180.259-2180.2591452088.0370.9576988舱口围板增强筋6.3197841962.848-1962.8476982088.03811上甲板纵骨5.4697841698.848-1698.8480842378.9321112纵舱壁纵骨4.8947841520.26-1520.260112383.8771215纵舱壁纵骨4.1697841295.084-12

40、95.0839692339.8621516纵舱壁纵骨3.4447841069.908-1069.9078282339.8621617A平台板2.719784844.7317-844.7316863450170.53271418纵舱壁板1.019784316.7325-316.7324585250.2397180.79006619舷侧板上列板1.019784316.7325-316.7324585879.74881920B平台板-0.68022-211.267211.2667694355.55562021纵舱壁板-1.88022-583.972583.9721066346.9966210.594

41、20130/36船体强度与结构结构设计课程设计22舷侧板以下板-1.88022-583.972583.9721066963.87942223C平台板-3.08022-956.677956.6774439804.3155230.84073824舭列板-4.14381-1287.021287.0152241314.3782425舭龙骨-4.14381-1287.021287.015224200250.15539826内底纵骨a-3.19022-990.842990.84209992351.24426b2353.958c2353.85427船底纵骨a-4.46022-1385.291385.2885

42、822353.44927b2356.278c2356.1730内底板-3.08022-956.677956.67744391816.4763032中桁材-3.83022-1189.621189.61828512320.4303933第一旁桁材-3.83022-1189.621189.61828512330.4303934第二旁桁材-3.83022-1189.621189.61828512340.4303935第三旁桁材-3.83022-1189.621189.61828518.8955350.436187下纤维-4.58022-1422.561422.559116注：临界应力大于资料佩服极限的

43、构件未列入表内。2剖面模数Ws计算因为构件极限弯矩下发生失稳，各构件距离中和轴的距离将发生变化，中和轴变化BB2A1AA2惯性矩变化I2(I12C)2A222。1）船底受压时最小剖面模数Ws计算见下表。构件名称纵舱壁板平台板舭龙骨中桁材第一旁桁材第二旁桁材第三旁桁材减缩剖面积A(cm2)8154.573-43.8263构件编号构件尺寸(mmmm)剖面积-1第一次近似计算结果219(2400-6002)108-0.405799392312(1490-372.52)89.4-0.159261541255(100-251)3.75-0.844601683326(1500-3752)45-0.5696

44、098413312(1500-3752)90-0.5696098413412(1500-3752)90-0.5696098413512(1490-372.552)89.4-0.563813406距比较轴距离自己惯性矩Z(m)静矩AZ(cm2m)惯性矩AZ2(cm2m2)i(cm2m2)-161.3303008143337.7055-1.983.27003482-158.213103.6831/36船体强度与结构结构设计课程设计-14.238-3.144.13774345-136.827-3.16726-4.1635913.18715386-54.9059-25.6324-3.8598.68490504-379.93716.875-51.2649-3.85197.3698101-759.87433.75-51.2649-3.85197.3698101-759.87433.75-50.4049-3.85194.0589363-747.12733.079497914.774666.7480928140562.1中和轴距参照轴距离(m)0.084240949Z上7.6430Z下-4.66446剖面对水平中和轴的惯性矩(cm2*m2)281011.8304Ws=36767.0086cm2mWmin=37098.2905Ws/Wmin=0.9911波峰时s=24