In the recent years, solid-shell "nite element models which possess no rotational degrees of freedom and applicable to thin plate/shell analyses have attracted considerable attention. Development of these elements are not straightforward. Shear, membrane, trapezoidal, thickness and dilatational lock
A DOF expanding method for connecting solid and shell element
β Scribed by Jialin, Wang ;Zhiwen, Lou ;Xing, Min ;Jianzheng, Zou
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 404 KB
- Volume
- 12
- Category
- Article
- ISSN
- 1069-8299
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β¦ Synopsis
The paper presents a degree of freedom expanding method for dealing with the connections of 3D isopararnetric solid elements and the degenerated shell elements. By introducing two degrees of freedom to describe the elongation in the normal direction of the shell node linked with solid elements, a series of multipoint constraint equations which provide proper connections of solid and shell nodes are raised. The method gives a complete solution to the problem of connection between 3D isoparametxic solid elements and degenerated shell elements even for the thermal elasto-plastic problem. It can adapt to complex junctions and simplify programming. Numerical examples are also presented to demonstrate the accuracy and feasibility in thermal elasto-plastic analysis.
π SIMILAR VOLUMES
A method is presented for connecting dissimilar ΓΏnite element meshes in two dimensions. The method combines standard master-slave concepts with the uniform strain approach for ΓΏnite elements. By modifying the deΓΏnition of the slave boundary, corrections are made to element formulations such that ΓΏrs
In this study a higher-order shell theory is proposed for arbitrary shell geometries which allows the cross-section to rotate with respect to the middle surface and to warp into a non-planar surface. This new kinematic assumption satis"es the shear-free surface boundary condition (BC) automatically.