| Partner: Ch. Luo |
Ostatnie publikacje
| 1. | Klisiński M., Luo Ch.♦, Postek E., Discussion on application of piece-wise linear weight functions in 2D contact problems, Computer Assisted Mechanics and Engineering Sciences, ISSN: 1232-308X, No.10, pp.265-281, 2003 Streszczenie: Standard higher order finite elements often perform unsatisfactory in contact problems. The major difficulties are caused by uneven distribution of nodal forces resulting in oscillating contact pressure. The paper presents a new approach that eliminates this drawback. The weight functions are chosen in such a way that even distributions of nodal forces are obtained. It is achieved by applying piece-wise linear weighting functions. Two new 3D isoparametric quadratic elements are derived: 6-node triangle and 8-node quadrilateral, and tested in many examples. The new elements have unsymmetric stiffness matrices, but the provided examples show their good performance in contact problems. Słowa kluczowe: coontact problems, weighting functions, quadratic finite elements Afiliacje autorów:
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