| 复杂型面固体装药结构的快速建模技术 |
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| 引用本文： | 张晓宏,郑晓亚,李宏岩,王中.复杂型面固体装药结构的快速建模技术[J].航空计算技术,2012(1):32-34,38. |
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| 作者姓名： | 张晓宏 郑晓亚 李宏岩 王中 |
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| 作者单位： | [1]西安近代化学研究所,陕西西安710065 [2]西北工业大学航天学院,陕西西安710072 |
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| 基金项目： | 国防科技工业基础产品创新计划基金项目资助 |
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| 摘 要： | 高质量的有限元网格是保证计算精度的前提和基础。固体装药结构型面极其复杂,这给有限元的离散带来了很大的困难,为此需要开展快速建模技术研究。快速建模思想是针对固体装药结构具有循环对称的特点,基于CAE软件,对于其中子结构将其分割成具有单一几何拓扑型式的组合体,方便地实现拉伸、映射或者扫掠操作,获得精度较高的结构化网格。针对某一典型星形内孔固体装药结构,详细阐述了快速建模的核心技术,数值模拟了固化降温过程中固体装药结构的应力应变场特征。快速建模技术对于其他类似的固体装药结构有限元离散具有很好的借鉴和参考价值。
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| 关 键 词： | 固体装药 快速建模 有限元离散 结构化网格 |
Rapid Modeling Technology on Solid Propellant Grain Structure with Complex Geometry |
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| ZHANG Xiao-hong,ZHENG Xiao-ya,LI Hong-yan,WANG Zhong.Rapid Modeling Technology on Solid Propellant Grain Structure with Complex Geometry[J].Aeronautical Computer Technique,2012(1):32-34,38. |
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| Authors: | ZHANG Xiao-hong ZHENG Xiao-ya LI Hong-yan WANG Zhong |
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| Institution: | 1.Xi′an Modern Chemistry Research Institute,Xi′an 710065,China; 2.School of Astronautics,Northwestern Polytechnical University,Xi′an 710072,China) |
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| Abstract: | Computation precision is based on high-quality grid.Solid propellant grain structure is most complex and brings a difficult problem on finite element discreteness.Therefore,rapid modeling technology should be studied.Because solid propellant grain structure was cyclic-symmetry,substructure could be divided up into combinations which made up of many single topology geometries by CAE software.Besides,any geometry could be easily realize operations such as tension,mapping and sweeping,then achieved high-quality structure grid.Aiming at a typical star-shaped grain,the paper introduced rapid modeling technology in detail and simulated stress and strain fields during cooldown experiment.The presented rapid modeling technology offers valuable reference for other solid propellant grain structures. |
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| Keywords: | solid propellant grain structure rapid modeling finite element discreteness structure grid |
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