| 马骏,陶亮.初速度对被撞船舷侧结构影响[J].,2008,(1):90-94 |
| 初速度对被撞船舷侧结构影响 |
| Effect of initial velocity on structure of collided ship |
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| DOI：10.7511/dllgxb200801017 |
| 中文关键词: 船舶碰撞 数值仿真 非线性有限元 结构损伤 临界速度 |
| 英文关键词: ship collision numerical simulation non-linear finite element structure damage critical velocity |
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| 中文摘要: |
| 采用ANSYS/LS-DYNA建立了两船发生侧向对中垂直碰撞的非线性有限元模型，模型中考虑了材料非线性、几何非线性等因素；并以所建立的非线性有限元模型为基础，对被撞船舷侧结构碰撞性能进行了仿真研究，得到了碰撞力和能量随碰撞船位移变化的关系曲线,重点研究了碰撞船初速度的影响. 数值仿真结果表明，不同的碰撞船初速度会导致被撞船舷侧结构产生不同形式的变形和不同程度的损伤. 同时，通过仿真计算得到了某一确定碰撞情景下被撞船舷侧内、外壳破裂的临界速度，可以为海事部门制定海上限速避碰规则提供依据. |
| 英文摘要: |
| A non-linear finite element model of side collision of ship was built to study the side structure collision characteristics by the code of ANSYS/LS-DYNA. The factors such as non-linearity of material, non-linearity of geometry were taken into account in this model. By the research on collision simulations, the curves of relation between energy and displacement of colliding ship, crashworthiness and displacement of colliding ship were obtained. The effect of initial velocity of colliding ship in ship collision is discussed. The results by numerical simulation show that colliding ship with different velocities has great effect on calculation time as well as on distortion of ship side structure in different styles and extents. At the same time, based on the result of calculation, the critical velocities made both on outer-plate and inner-plate crack of collided ship at this scene are attained, which can offer references for shipping busy field. |
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