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均匀水流冲击下扭王字块断裂失稳过程的数值模拟研究
Alternative TitleNumerical study on failure process of accropode under the impact of uniform flow
冯春; 李世海; 赵颖; 刘晓宇
Source Publication计算力学学报
2014
Volume31Issue:2Pages:248-253
ISSN1007-4708
Abstract扭王字块是一种重要的港口防波堤护面块体,其断裂失稳过程与所受水流冲击力密切相关。文章以基于连续介质力学的离散元方法(CDEM)为基础,通过引入FVM算法及半弹簧-半棱联合接触模型,分别实现了大位移下单元变形的准确计算及单元接触的快速更新。基于改进后的CDEM方法,通过在扭王字块表面施加按流速方向逐渐增加的动态面力,对均匀水流冲击下单扭王字块的断裂过程及扭王字块群的失稳滑移过程进行了数值分析。通过分析,不同方向水流冲击下单扭王字块的主要断裂模式为沿着根部的折断,其断裂流速约为21~25m/s;不同吨位下扭王字块群的失稳模式为扭王字块单体从群体中跳出,其失稳流速约为4~11m/s。
KeywordCdem Fvm 联合接触模型 防波堤 扭王字块 断裂失稳模式
Indexed ByCSCD
Language中文
Funding Organization国家重点基础研究发展计划(973)(2010CB731506);; 国家科技支撑计划(2012BAK10B00);; 国家自然科学基金青年基金(11002146)资助项目
CSCD IDCSCD:5125243
DepartmentLMFS工程地质体力学(LEM)
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49153
Collection流固耦合系统力学重点实验室
Recommended Citation
GB/T 7714
冯春,李世海,赵颖,等. 均匀水流冲击下扭王字块断裂失稳过程的数值模拟研究[J]. 计算力学学报,2014,31(2):248-253.
APA 冯春,李世海,赵颖,&刘晓宇.(2014).均匀水流冲击下扭王字块断裂失稳过程的数值模拟研究.计算力学学报,31(2),248-253.
MLA 冯春,et al."均匀水流冲击下扭王字块断裂失稳过程的数值模拟研究".计算力学学报 31.2(2014):248-253.
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