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不连续问题的微分求积(DQ)法 被引量:2

DIFFERENTIAL QUADRATURE (DQ) METHOD OF DISCONTINUOUS PROBLEMS
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摘要 针对载荷不连续和结构几何不连续问题,系统地研究节点分布方式和载荷等效模式对微分求积法求解收敛性和精度的影响,提出一种基于改进的节点分布方式和载荷等效模式的微分求积(differential quadrature)法。继而分别以不同边界条件下受集中载荷和局域分布载荷的梁构件以及含分层层合板的面内弹性屈曲问题为例,对载荷不连续和结构几何不连续问题进行求解,证明文中方法的有效性。与传统的微分求积法相比,文中方法在处理非连续问题时,精度更高且收敛更快,为工程中采用微分求积法解决不连续问题提供一种高效可行的方法。 The influences of different modified node distribution modes and load equivalent methods to the convergence of solution are investigated,and an improved DQM (differential quadrature method) based on the of modified node distribution mode and load equivalent methods is proposed.As an example of load discontinuous problems,slender beams with different supports under concentrated forces and/or local loads are discussed.The applicability to the problems of discontinuous loads and geometric discontinuity is vali...
出处 《机械强度》 CAS CSCD 北大核心 2010年第2期333-337,共5页 Journal of Mechanical Strength
基金 凡舟基金(20070501) 北京市教育委员会共建项目(XK100060522)资助
关键词 微分求积法 载荷不连续 几何不连续 节点分布方式 载荷等效模式 Differential quadrature method Load discontinuity Geometric discontinuity Node distribution mode Load equivalent mode
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参考文献8

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同被引文献9

  • 1阮苗,王忠民.功能梯度斜板的屈曲分析[J].机械工程学报,2011,47(6):57-61. 被引量:5
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  • 3艾亿谋,杜成斌,于国军.压电智能材料在悬臂梁结构振动控制中的应用[J].河海大学学报(自然科学版),2007,35(6):695-698. 被引量:7
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  • 5Wang X. W, Huang J C. Elastoplastic buckling analyses of rectangular plates under biaxial loadings by the differential quadrature method[ J]. Thin-Walled Structures ,2009,47 : 14-20.
  • 6Yoshimura Y, Iwata K. Buckling of simply supported oblique plates [J]. Journal of Applied Mechanics,1963,30(2) :363-366.
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  • 9Wang X W, Tab M, Zhou Y. Buckling analyses of anisotrepic plates and isotropic skew plates by the new version differential quadrature method [ J ]. Thin-Walled Structures,2003,41 : 15-29.

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