A modified plate model for an efficient analytical treatment of stress concentrations at notches

A modified plate model for an efficient analytical treatment of stress concentrations at notches
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一种改进的板模型,用于有效分析处理缺口处的应力集中

DOI:
10.1002/pamm.201800133
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发表时间:
2018
期刊:
PAMM
影响因子:
--
通讯作者:
Becker
Becker
中科院分区:
--
文献类型:
--
作者:
Felger;Becker

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在目前的工作中,提出了一个修改后的板模型之间的基尔霍夫-洛夫和一阶剪切变形板理论。由此产生的偏微分方程系统可以使用复势方法求解,该方法允许处理复杂的几何形状,例如尖锐或圆形的缺口。利用所提出的模型,可以显式地获得尖锐切口附近的奇异应力场,并研究切口张开角对奇异行为的影响。计算结果表明,得到的弯矩和横向剪力与一阶剪切变形板理论的渐近解相吻合,并且与数值计算结果非常吻合。
In the present work, a modified plate model is proposed lying in‐between the established Kirchhoff‐Love and first‐order shear deformation plate theories. The resulting system of partial differential equations can be solved using a complex potential approach which allows for tackling complex geometries such as sharp or rounded notches. Using the proposed model, the singular stress field in the vicinity of a sharp notch can be obtained explicitly and the influence of the notch opening‐angle on the singular behaviour is investigated. It is shown that resulting bending moments and transverse shear forces match with asymptotic solutions according to first‐order shear deformation plate theory and are in very good agreement with numerical results.
DOI: 10.1016/j.euromechsol.2016.09.016
发表时间: 2017
影响因子: 4.1
作者:
J. Felger;W. Becker
通讯作者: J. Felger;W. Becker
Reissner/Mindlin 板模型的角点奇点和规律性结果
DOI: --
发表时间: 2011
期刊:
影响因子: --
作者:
A. Rössle;A. Sändig
通讯作者: A. Sändig