Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Journal of Theoretical and Applied Mechanics

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: identification of material parameters

Sortuj według:

Ogranicz wyniki do:

Modeling of cyclic thermo-elastic-plastic behaviour of P91 steel

Sulich P., Egner W., Mroziński S., Egner H.

Journal of Theoretical and Applied Mechanics

2017

Vol. 55 nr 2

595--606

Thermomechanical low cycle fatigue behaviour of P91 steel used in power industry applications has been extensively investigated. The constitutive model of Armstrong-Frederick, extended with temperature rate effects, has been applied to describe the behaviour of the thermo-elastic-plastic material. The proposed model has been successfully implemented in simulation of low cycle fatigue of the examined steel in two different temperatures.

Multiscale modeling of osseous tissues

Burczyński T., Kuś W., Brodacka A.

Journal of Theoretical and Applied Mechanics

2010

Vol. 48 nr 4

855-870

The paper presents a methodology of the multiscale bone modeling in which the task of identification of material parameters plays the crucial role. A two-scale analysis of the bone is considered and the problem of identification, formulated as an inverse problem, is examined as an important stage of the modelling process. The human femur bone, built form cancellous and cortical bone, is taken as an example of an osseous tissue, and the computational multiscale approach is considered. The methodology presented in the paper allows one to analyze the two-scale model with the use of computational homogenization. The representative volume element (RVE) is created for the microstructure of the basis of micro-CT scans. The macro and micro model analyses are performed by using the finite element method. The identification of trabeculae material parameters on the micro-level is considered as the minimization problem which is solved using evolutionary computing.

W artykule przedstawiono metodologię wieloskalowego modelowania thanki kostnej, w której zagadnienie identyfikacji parametrów materiałowych odgrywa kluczową rolę. Rozpatrzono analizę dwuskalową kości, a problem identyfikacji sformułowano jako zagadnienie odwrotne, będące ważnym etapem procesu modelowania. Jako przykład tkanki kostnej rozważono kość udową zbudowaną z kości gąbczastej i korowej.