基于有限元分析法的船舶上层建筑振动性能研究
|
摘要
上层建筑振动是影响船舶整体稳定性的主要因素,所以对其进行有效分析具有重要的现实意义。本次针对以往基于经验公式建立软件程序来计算上层建筑振动频率,存在精度不足的问题,提出一种有限元分析方法。利用有限元分析法进行船舶上层建筑振动性能研究主要分为两部分:先是选定船舶参数,利用利用Ansys软件进行上层结构有限元建模;后是对该模型进行求解,计算船舶上层建筑振动频率,实现振动性能研究,并与基于经验公式软件程序法进行对比,得出有限元分析法精度更高,结果更接近真实值。
The vibration of superstructure is an important factor affecting the overall stability of ships, so effective analysis of it has important practical significance. In view of the inaccuracy of the previous software program based on empirical formulas to calculate the vibration frequency of superstructure, a finite element analysis method is proposed. The research on vibration performance of ship superstructure by using finite element analysis method is divided into two parts: firstly, selecting ship parameters and using Ansys software to build finite element model of superstructure; secondly, solving the model, calculating vibration frequency of ship superstructure, realizing vibration performance research, and comparing with the software program method based on empirical formula, the finite element analysis is obtained. The analytical method has higher accuracy and the results are closer to the true values.
The vibration of superstructure is an important factor affecting the overall stability of ships, so effective analysis of it has important practical significance. In view of the inaccuracy of the previous software program based on empirical formulas to calculate the vibration frequency of superstructure, a finite element analysis method is proposed. The research on vibration performance of ship superstructure by using finite element analysis method is divided into two parts: firstly, selecting ship parameters and using Ansys software to build finite element model of superstructure; secondly, solving the model, calculating vibration frequency of ship superstructure, realizing vibration performance research, and comparing with the software program method based on empirical formula, the finite element analysis is obtained. The analytical method has higher accuracy and the results are closer to the true values.
引文
[1]孙倩,周宏.散货船上层建筑振动的初步分析[J].船舶标准化工程师, 2016, 49(5):15–20.
[2]王迪,朱翔,李天匀,等.基于能量有限元法的功能梯度梁振动分析[J].振动与冲击, 2018, 37(3):119–124.
[3]付建科,徐亮,雷小平,等.基于有限元法的振动时效数值模拟与分析[J].三峡大学学报(自然科学版), 2017, 39(4):76–79.
[4]杨凡.基于有限元方法的流致振动数值模拟[J].四川建筑,2017, 37(2):205–208.
[2]王迪,朱翔,李天匀,等.基于能量有限元法的功能梯度梁振动分析[J].振动与冲击, 2018, 37(3):119–124.
[3]付建科,徐亮,雷小平,等.基于有限元法的振动时效数值模拟与分析[J].三峡大学学报(自然科学版), 2017, 39(4):76–79.
[4]杨凡.基于有限元方法的流致振动数值模拟[J].四川建筑,2017, 37(2):205–208.