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国家自然科学基金(10672032): 作品数：15被引量：24H指数：2; 导出分析报告; 相关作者：陈万吉赵杰冀宾王金芝任晓辉更多>>; 相关机构：沈阳航空工业学院大连理工大学大连民族学院西安交通大学更多>>; 相关期刊：《力学学报》《Science China(Physics,Mechanics & Astronomy)》《Applied Mathematics and Mechanics(English Edition)》《计算力学学报》更多>>; 相关主题：有限元TEST剪切带偶应力理论INTERPOLATION更多>>; 相关领域：理学建筑科学一般工业技术自动化与计算机技术更多>>

Construction of n-sided polygonal spline element using area coordinates and B-net method被引量：4: 《Acta Mechanica Sinica》2010年第5期685-693,共9页Juan Chen Chong-Jun Li Wan-Ji Chen; supported by the National Natural Science Foundation of China (60533060, 10672032, 10726067);Science Foundation of Dalian University of Technology (SFDUT07001); In general, triangular and quadrilateral elements are commonly applied in two-dimensional finite element methods. If they are used to compute polycrystalline materials, the cost of computation can be quite significant...; 关键词：Finite element method n-sided polygonalelement - Bivariate spline interpolation The second ordercompleteness

C^0 and C^1 theories and test functions for FEM patch test in microstructures: 《Science China(Physics,Mechanics & Astronomy)》2010年第6期1086-1093,共8页CHEN WanJi Institute for Structural Analysis of Aerocraft,Shenyang Aerospace University,Shenyang 110136,China; was supported by the National Natural Science Foundation of China (Grant No. 10672032); Among many theories and categories in microstructures,rotation-displacement used as "independent" or "dependent" variables,is a noticeable topic. In FEM,it is called C0 and C1 theory. The convergence criteria of finit...; 关键词：COUPLE stress THEORY displacement-rotation dependent THEORY displacement-rotation independent THEORY finite element method for MICROSTRUCTURES TEST function for patch TEST

关于两种二阶应变梯度理论被引量：2: 《力学学报》2010年第1期138-145,共8页赵杰陈万吉冀宾; 国家自然科学基金资助项目(10672032)~~; 对常见的两种应变梯度理论进行了深入的理论分析,比较了它们在公式推导、能量表达、物理解释和应用领域方面的差异.选择钢筋拉拔弹性阶段和超薄悬臂梁受压弯曲两个典型的算例,采用可以通过C^(0-1)分片检验的18自由度应变梯度平面三角形...; 关键词：应变梯度理论材料长度参数有限元 C1弱连续 C0-1分片检验

A 17-node quadrilateral spline finite element using the triangular area coordinates: 《Applied Mathematics and Mechanics(English Edition)》2010年第1期125-134,共10页陈娟李崇君陈万吉; supported by the Natural Science Foundation of China China (Nos. 60533060, 10672032, and 10726067);the Science Foundation of Dalian University of Technology (No. SFDUT07001); Isopaxametric quadrilateral elements are widely used in the finite element method. However, they have a disadvantage of accuracy loss when elements are distorted. Spline functions have properties of simpleness and con...; 关键词：17-node quadrilateral element bivariate spline interpolation basis trian-gular area coordinates B-net method fourth-order completeness

细观尺度C^0和C^1理论及有限元分片检验函数被引量：1: 《中国科学（G辑）》2009年第10期1480-1486,共7页陈万吉; 国家自然科学基金资助项目(批准号:10672032); 细观尺度理论有多种理论和不同分类,其中值得关注的分类是转角(或应变)和位移变量"独立"和"不独立"细观理论,按有限元法可称为C0和C1理论.细观尺度理论有限元收敛性条件还远不如经典板弯曲理论清楚,本文基于增强型分片检验理论,对两类...; 关键词：细观偶应力理论位移-转角不独立理论位移-转角独立理论细观理论有限元分片检验函数

常规及偶应力轴对称有限元分片检验函数: 《中国科学（G辑）》2009年第7期1036-1040,共5页陈万吉赵杰王金芝冀宾; 国家自然科学基金资助项目(批准号:50479058,10672032); 我们提出的增强型分片检验可以用于检验一类非齐次阶微分方程的有限元的收敛性.由此,建立了常规轴对称问题和轴对称偶应力/应变梯度C1理论有限元增强型分片检验的检验函数,并得到重要结论:这类轴对称有限元的分片检验函数不含常剪应力项.; 关键词：轴对称单元非齐次阶微分方程偶应力理论分片检验的检验函数

意识控制心率过程中头皮脑电活动和心率变异性分析被引量：1: 《中国医疗器械杂志》2009年第4期235-238,共4页于晓琳张建保王珏; 国家自然科学基金资助项目(10672032); 介绍了通过小波包能量和近似熵方法,研究了意识控制心率过程中头皮脑电活动和心率变异性的变化规律。实验结果表明,心率的减慢和加快可以通过意识活动对自主神经的主动调节进行控制,并且脑电活动的变化先于心率的变化。但是,这种控制与...; 关键词：意识脑电心率变异性小波包近似熵

Patch test function for axisymmetric element of conventional and couple stress theory: 《Science China(Physics,Mechanics & Astronomy)》2009年第8期1257-1261,共5页CHEN WanJi ZHAO Jie WANG JinZhi JI Bian; Supported by the National Natural Science Foundation of China (Grant No. 10672032); The enhanced patch test proposed by Chen W J(2006) can be used to assess the convergence of the problem with non-homogeneous differential equations.Based on this theory,we establish the patch test function for axisymm...; 关键词：AXISYMMETRIC ELEMENT NON-HOMOGENEOUS differential equations COUPLE stress theory TEST FUNCTION of patch TEST

Measurement of length-scale and solution of cantilever beam in couple stress elasto-plasticity被引量：2: 《Acta Mechanica Sinica》2009年第3期381-387,共7页Bin Ji Wanji Chen Jie Zhao; the National Natural Science Foundation of China (50479058, 10672032); Owing to the absence of proper analytical solution of cantilever beams for couple stress/strain gradient elasto-plastic theory, experimental studies of the cantilever beam in the micro-scale are not suitable for the d...; 关键词：Material length-scale Couple stress elasto-plasticity Analytical solution Cantilever beam

Functions for patch test in finite element analysis of the Mindlin plate and the thin cylindrical shell被引量：2: 《Science China(Physics,Mechanics & Astronomy)》2009年第5期762-767,共6页CHEN WanJi 1,2 ,WANG JinZhi 1,3 &ZHAO Jie 1 1State Key Laboratory for Structural Analysis of Industrial Equipment,Dalian University of Technology,Dalian 116023,China 2Institute for Structural Analysis of Aerocraft,Shenyang Institute of Aeronautical Engineering,Shenyang 110136,China 3 College of Science,Institute of Dalian Nationalities,Dalian 116022,China; Supported by the National Natural Science Foundation of China(Grant Nos.50479058 and 10672032); Current patch test for Mindlin plate element only satisfies the zero shear deformation condition.The patch test of non-zero constant shear for Mindlin plate problem cannot be performed.For shell element, the patch tes...; 关键词：MINDLIN plate thin CYLINDRICAL SHELL FINITE element enhanced PATCH TEST TEST function

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