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船体加筋板结构焊接变形和残余应力热弹塑性有限元分析 被引量:4
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作者 喻琪 陈震 《舰船科学技术》 北大核心 2016年第6期47-51,80,共6页
为提高焊接热弹塑性数值模拟的效率,采用静态子结构方法实现焊接热传导分析计算。根据船体加筋板结构的重复性和对称性特点,将整个结构根据加强筋划分为若干相同的静态子结构,计算得到1条焊缝的温度分布后,通过温度场的镜像和平移获得... 为提高焊接热弹塑性数值模拟的效率,采用静态子结构方法实现焊接热传导分析计算。根据船体加筋板结构的重复性和对称性特点,将整个结构根据加强筋划分为若干相同的静态子结构,计算得到1条焊缝的温度分布后,通过温度场的镜像和平移获得整个结构的温度场。以船体加筋板为例,采用静态子结构方法并结合温度场的镜像和平移技术,计算分析船体加筋板的焊接温度场和应力场结果。计算表明,该方法在保证计算精度的前提下,极大地提高了计算效率。 展开更多
关键词 焊接数值模拟 静态子结构 温度场映射 船体加筋板 焊接变形
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Research on integrated naval ship design model and its intelligent algorithm
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作者 侯远杭 黄胜 《舰船科学技术》 北大核心 2016年第6期52-56,共5页
Pointing at naval ship projects creation and evaluation at stage of naval ship concept design,in the mechanism of integrated design based on naval ship synthesis model,ship projects creation and intelligent fuzzy eval... Pointing at naval ship projects creation and evaluation at stage of naval ship concept design,in the mechanism of integrated design based on naval ship synthesis model,ship projects creation and intelligent fuzzy evaluation method is researched,thus the applicability of each algorithm is obtained.Firstly,the naval ship synthesis model is introduced to design process,value and application status of synthesis model in integrated design is then exposed.Then the applicability of single target and multi targets SA algorithm is improved,and the quick generation of naval ship projects is done.After that,multiple projects evaluation method based on Vague fuzzy set is introduced to established the intelligent evaluation model,which can integrate effectively the quantitative and qualitative indexes.At last,the analysis of results comparison shows the advancement and rationality of each method.The example shows the integrated design process researched in this paper can be a great orientation of naval ship project design,and can also be used in other parts of naval ship development. 展开更多
关键词 焊接数值模拟 静态子结构 温度场映射 船体加筋板 焊接变形
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