国家自然科学基金(90916027)

作品数:31被引量:72H指数:5
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相关作者:崔俊芝聂玉峰徐绯汤忠斌杨扬更多>>
相关机构:西北工业大学中国科学院数学与系统科学研究院北京理工大学哈尔滨工业大学更多>>
相关期刊:《振动与冲击》《爆炸与冲击》《Science China(Physics,Mechanics & Astronomy)》《航空计算技术》更多>>
相关主题:碎片云热防护系统SECOND-ORDERITS复合材料更多>>
相关领域:理学一般工业技术航空宇航科学技术金属学及工艺更多>>
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局部任意阶增长的拟线性抛物方程解的存在性被引量:1
《数学物理学报(A辑)》2015年第5期833-844,共12页马文雅 张乔夫 崔俊芝 
国家重点基础研究发展计划(973计划)项目(2012CB025904);国家自然科学基金(90916027);NSFC-河南人才培养联合基金(U1404102)资助
该文运用Schauder不动点方法对一类具有局部任意阶增长、含有记忆项的拟线性抛物方程证明了全局弱解的存在性.具体地,通过固定系数及源项中的函数变量构造一个线性映射,其定义域取值范围是有界的,但可以局部任意阶增长.由极值原理知其...
关键词:拟线性抛物方程 不动点 存在性 局部任意阶增长 
平纹编织C/SiC复合材料低速冲击数值模拟被引量:5
《爆炸与冲击》2015年第1期22-28,共7页杨扬 徐绯 张岳青 汤忠斌 
国家自然科学基金重点项目(90916027);北京理工大学爆炸科学与技术国家重点实验室开放基金项目(KFJJ12-14M)
首先,基于空气炮装置进行了2D-C/SiC薄板在冲击速度为79~219m/s范围内的低速冲击实验,对碎片云团发展过程进行高速摄影记录;其次,基于Autodyn软件正交各向异性复合材料模型,推导2D-C/SiC材料相关参数;选取SPH求解器建立二维计算模型,对...
关键词:固体力学 C/SiC材料冲击特性 SPH 热防护结构 碎片云 高速摄影 
超高速撞击作用下C/SiC薄板抗冲击特性研究被引量:1
《振动与冲击》2014年第21期189-192,共4页杨扬 徐绯 寇剑锋 汤忠斌 
国家自然科学基金重点项目(90916027);国家自然科学基金青年基金(11102168);北京理工大学爆炸科学与技术国家重点实验室开放基金项目(KFJJ12-14M)
针对空天飞行器热防护系统抗冲击性能,基于已得实验结果对冲击载荷作用的平纹编织C/SiC复合材料薄板碎片云团结构定性建模及分析,获得C/Si C碎片云中特殊轴向柱状高能区。基于Autodyn正交各向异性材料模型推导材料参数并与实验对比,验...
关键词:热防护系统 抗冲击 C/SIC 复合材料 超高速撞击 碎片云 
Second-order two-scale method for bending behavior analysis of composite plate with 3-D periodic configuration and its approximation被引量:1
《Science China Mathematics》2014年第8期1713-1732,共20页WANG ZiQiang CUI JunZhi 
supported by National Natural Science Foundation of China(GrantNo.90916027);the Special Funds for National Basic Research Program of China(Grant No.2010CB832702);Foundation of Guizhou Science and Technology Department(Grant No.[2013]2144);the State Key Laboratory of Science and Engineering Computing
This paper considers the bending behaviors of composite plate with 3-D periodic configuration.A second-order two-scale(SOTS)computational method is designed by means of construction way.First,by 3-D elastic composite ...
关键词:second-order two-scale computational method Reissner-Mindlin deformation pattern composite plate approximation analysis 
Acceleration Strategies Based on an Improved Bubble Packing Method被引量:1
《Communications in Computational Physics》2014年第6期115-135,共21页Nan Qi Yufeng Nie Weiwei Zhang 
National Natural Science Foundation of China(No.11071196,90916027).
The bubble packing method can generate high-quality node sets in simple and complex domains.However,its efficiency remains to be improved.This study is a part of an ongoing effort to introduce several acceleration sch...
关键词:Bubble packing method algorithm efficiency viscosity coefficient mesh generation Delaunay triangulation. 
A biarc-based shape optimization approach to reduce stress concentration effects被引量:1
《Acta Mechanica Sinica》2014年第3期370-382,共13页Liang Meng Wei-Hong Zhang Ji-Hong Zhu Liang Xia 
supported by the National Natural Science Foundation of China(90916027,11002113,51275424,and 11172236);973 Program(2011CB610304);the 111 Project(B07050);the NPU Foundation for Fundamental Research(JC20120229)
In order to avoid stress concentration, the shape boundary must be properly designed via shape optimiza- tion. Traditional shape optimization approach eliminates the stress concentration effect by using free-form curv...
关键词:Structural shape optimization BIARC Curvefitting NURBS Stress concentration 
Second-order two-scale computations for conductive radiative heat transfer problem in periodic porous materials
《Chinese Physics B》2014年第3期91-98,共8页杨志强 崔俊芝 李博文 
Project supported by the National Basic Research Program of China(Grant No.2010CB832702);the National Natural Science Foundation of China(Grant No.90916027)
In this paper, a kind of second-order two-scale (SOTS) computation is developed for conductive-radiative heat trans- fer problem in periodic porous materials. First of all, by the asymptotic expansion of the tempera...
关键词:second-order two-scale (SOTS) computations periodic porous materials conductive-radiativeheat transfer 
Second-Order Two-Scale Analysis Method for the Heat Conductive Problem with Radiation Boundary Condition in Periodical Porous Domain被引量:1
《Communications in Computational Physics》2013年第9期1027-1057,共31页Qiang Ma Junzhi Cui 
supported by the National Natural Science Foundation of China(90916027);the Special Funds for National Basic Research Program of China(973 Program 2010CB832702);supported by the State Key Laboratory of Science and Engineering Computing.
In this paper a second-order two-scale(SOTS)analysismethod is developed for a static heat conductive problem in a periodical porous domain with radiation boundary condition on the surfaces of cavities.By using asympto...
关键词:Periodic structure porousmaterial radiation boundary condition second-order twoscale method 
Interior Hlder and gradient estimates for the homogenization of the linear elliptic equations被引量:2
《Science China Mathematics》2013年第8期1575-1584,共10页ZHANG QiaoFu CUI JunZhi 
supported by National Natural Science Foundation of China (Grant No.90916027);Special Funds for National Basic Research Program of China (973 Program) (Grant No. 2010CB832702);the State Key Laboratory of Scientific and Engineering Computing
H61der and gradient estimates for the correctors in the homogenization are presented based on the translation invariance and Li-Vogelius's gradient estimate. If the coefficients are piecewise smooth and the homogeniz...
关键词:gradient estimate HOMOGENIZATION translation invariance de Giorgi-Nash estimate 
空天飞行器热防护系统热短路与控制问题研究
《航天返回与遥感》2013年第1期52-59,共8页刘斌 吴儒亮 徐绯 
国家自然科学基金(90916027)
空天飞行器盖板式热防护系统(TPS)中存在支架热短路、缝隙辐射热短路问题。用有限元分析软件ABAQUS对这两种情形进行了热分析,结果表明,在再入段典型热载荷下,机体蒙皮各局部的最高温度值相差最大超过100K,机体蒙皮存在局部烧坏的危险...
关键词:热防护系统 热分析 热短路 散热片 空天飞行器 
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