海冰与孤立桩相互作用的数值模拟

摘要: 本文用数值方法模拟孤立桩与冰原冰相互作用过程中,冰的非开裂挤压脆性破坏过程和孤立桩的受力过程.设定冰原冰晶体是柱状结构,晶粒直径大小均匀,晶体主轴分布在水平方向上,符合均匀随机分布,冰体内等温、等盐、等厚,并且是在水中做匀速直线运动的半无限连续体.文中的孤立桩柱是一个大口径、固定且无振动的刚体,采用多点多单元计算的方法,使孤立桩外壳壳体局部受力,冰原冰碰撞作用部分局部受力破碎,从而计算孤立桩柱总受力.文中通过1990年2月8日渤海辽东湾冰区内JZ20-2-1平台桩柱腿受冰力的实测时间历程曲线,对由文中提供模型模拟计算的孤立桩受力过程时间历程曲线进行对比,结果两者吻合较好.
- 孤立桩 /
- 冰原冰 /
- 脆性破坏

EL-Tahan H et al.Response of semi-submersible models to bergy-bit import.In:Proc.of 8th POAC,1985,(2):544~554

Tunik A L.Safe speeds for navigation in ice.Polar Tech.,1986,(2):1106-1124

Tatsuta M and T Kimura.Ice forces on framed structure.In:Proc.of 9th 1AHR Symposium on Ice,1988.(1):692-707.

Hamza H &.L Y Shin.Numerical modeling of pack ice interaction with ships.In:Proc.of 9th IAHR Symposium on Ice,1988,(2):735-745

陈伟斌.海洋结构物与冰相互作用的数值模拟[研究生学位论文].大连理工大学,1993,1-58

陈伟斌.海冰与孤立柱碰撞破碎模型.海洋环境科学,1995,14(2):74-80

Sodhi D S et al.Sheet ice force on a conical structures:an experimental study.In:Proc.of 8th POAC,1985,(2):643-655

Määttänen M.Ice-force measurements at the Gulf of Bathnia by the instrumental KEMII Lighthouse.In;Proc.of 5th OMAE,1977.(4):200-205

李福成等.渤海海冰的抗压强度试验研究.海洋学报,1987,9(2):255-261

Michel B.Ice Mechanics,Printed in Canada,1978

Li Z et al.Kinetic energy analysis of friction coefficient between sea ice and meterials.In;Proc.of 9th IAHR Symposium on Ice,1988,(1):263-270

Chen W et al.A method of thermodynamic numerical sea ice forecast in the Bohai Sea.In:Proc.of 10th IAHR Symposlum on Ice,1990,(2):143-152

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