Instytut Podstawowych Problemów Techniki
Polskiej Akademii Nauk


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

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:
Klisiński M. - IPPT PAN
Luo Ch. - inna afiliacja
Postek E. - IPPT PAN

Kategoria A Plus


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