船舶强度课程设计作业-波浪附加弯矩与总弯矩计算等

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1、1.波浪附加弯矩与总弯矩计算：1.1波浪附加弯矩计算：根据《钢质海船入级建造规范》中给出了船体梁各个横剖面的中拱波浪弯矩M()与中垂波浪弯矩M(-)的计算公式：可根据公式1-1，1.2求得波浪附加ww弯矩。23M()190MCLBC10kN.m（中拱）（公式1-1）wb23M(-)110MCLB(C0.7)10kN.m（中垂）（公式1-1）wb其中，M——弯矩分布系数，对于船中M=1；M1.00.40.651.00尾图1-1M-弯矩分布系数C——方型系数，取值不得小于0.6，对于本船为

2、0.67；bC——系数，按公式1-2计算，得8.4548。(按L=126m)3/2300LC10.75（90mL300m）（公式1-2）1001.1.1中拱情况下波浪附加弯矩计算：波浪附加弯矩计算过程见表1.1：理论站号距0站距离fMMw0000016.30.050.12546990.01212.60.10.2593980.02318.90.150.375140970.03425.20.20.5187960.04531.50.250.625234950.04637.80.30.7528

3、1940.05744.10.350.875328930.06850.40.41375920.07956.70.451375920.0710630.51375920.071169.30.551375920.071275.60.61375920.071381.90.651375920.071488.20.70.857143322217.261594.50.750.714286268514.4416100.80.80.571429214811.6317107.10.850.428571161108.4418113

4、.40.90.285714107405.6319119.70.950.14285753702.8120126100表1.11.1.2中拱情况下总弯矩计算：根据条件，可以近似将船体的静水弯矩当作是波浪附加弯矩的1/3，所以，可以得出总弯矩是波浪附加弯矩的4/3倍。最大弯矩值为501226.76kN·m。各站总弯矩值见表1.2：理论站号静水弯矩值(kN·m)波浪附加弯矩(kN·m)合成弯矩(kN·m)0000115663.3446990.0162653.35231326.6793980.02125306.693

5、46990.01140970.03187960.04462653.35187960.04250613.39578316.68234950.04313266.72693980.02281940.05375920.077109643.35328930.06438573.418125306.69375920.07501226.769125306.69375920.07501226.7610125306.69375920.07501226.7611125306.69375920.07501226.761212530

6、6.69375920.07501226.7613125306.69375920.07501226.7614107405.75322217.26429623.011589504.81268514.44358019.251671603.88214811.63286415.511753702.81161108.44214811.251835801.88107405.63143207.511917900.9453702.8171603.7520000表1.21.1.3中垂情况下波浪弯矩的计算波浪附加弯矩计算过程见表

7、1.3：理论站号距0站距离fMMw0000016.30.050.125-55627.61212.60.10.25-111255.21318.90.150.375-166882.82425.20.20.5-222510.43531.50.250.625-278138.03637.80.30.75-333765.64744.10.350.875-389393.25850.40.41-445020.85956.70.451-445020.8510630.51-445020.851169.30.551-445020

8、.851275.60.61-445020.851381.90.651-445020.851488.20.70.857143-381446.511594.50.750.714286-317872.1716100.80.80.571429-254297.8217107.10.850.428571-190723.0318113.40.90.285714-127148.6919119.70.950.142857-6357