| 船艏正撞刚性墙力—撞深关系的简化公式研究 |
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| 引用本文： | 孟德巍,王君杰.船艏正撞刚性墙力—撞深关系的简化公式研究[J].地震学刊,2011(2):160-165. |
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| 作者姓名： | 孟德巍 王君杰 |
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| 作者单位： | 同济大学土木工程防灾国家重点实验室,上海200092 |
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| 基金项目： | 国家自然科学基金（50538050）; 交通运输部西部科技项目（200731882234） 交通运输部交通行业联合科技攻关项目（2008-353-344-340）资助 |
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| 摘 要： | 面向工程应用,基于船艏正撞刚性墙的有限元碰撞计算,提出了撞击力—船艏撞深关系的基本简化公式,以应用于船撞桥的质量-弹簧体系简化动力分析模型的有限元计算。使用LS-DYNA软件,通过3000~50000 DWT（dead weight tonnage,载重吨）范围内4艘典型船舶的有限元碰撞分析,得到了船舶在1.0~5.0 m/s冲击速度范围内,与刚性墙面正撞的撞击力—撞深样本曲线。根据对样本曲线的观察,提出了一种基本的撞击力—撞深关系的简化数学公式,并统计得到了公式中各参数的表达式。船桥碰撞实际工况的有限元计算对比表明,提出的简化公式可以满足船桥碰撞简化动力分析的需要。
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| 关 键 词： | 船桥碰撞 质量-弹簧体系 撞击力—撞深关系 简化公式 |
Study on Simplified Formulae for Impact Force-indentation Relationship under Frontal Impact of Ship-bow to Rigid Wall |
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| MENG De-wei,WANG Jun-jie.Study on Simplified Formulae for Impact Force-indentation Relationship under Frontal Impact of Ship-bow to Rigid Wall[J].Journal of Seismology,2011(2):160-165. |
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| Authors: | MENG De-wei WANG Jun-jie |
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| Institution: | (State Key Laboratory for Disaster Prevention in Civil Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | In this paper,basic simplified formulae for relationship between impact force and ship-bow indentation were presented based on results of finite element analysis of ship-bow-rigid wall collisions,and these formulae could be used in application-oriented mass-spring system for simplified dynamical analysis of ship-bridge collision.With software LS-DYNA,impacting analysis of finite element method for four ships between 3000-50000 DWT（deadweight tonage） and with initial velocities from 1.0 m/s to 5.0 m/s was carried out and the sample curves of impacting force-bow indention relationship were obtained.Based on observation of the sample curves,a simplified formula of basic force-indention relationships were proposed,and function form of parameters in the formula was derived in the basis of statistical method.Results of finite element calculations of ship-bridge collision from different models show that the simplified formula for impact force-indention relationship can meet the need of simplified dynamic analysis of ship-bridge collision. |
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| Keywords: | ship-bridge collision mass-spring system impact force-indentation relationship simplified formula |
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