Title :
The thermal effects on deformation processes of the porous materials
Author :
Punantapong, Boonyong
Author_Institution :
Dept. of Ind. Phys. & Med. Instrum., King Mongkut´´s Inst. of Technol., Bangkok, Thailand
Abstract :
The modeling of the behavior of porous media has received considerable attention in recent years due not only to its theoretical interest but also to broad technological applications concerning materials such as ceramics, composite materials, bone, and other biological tissues. However, many engineering materials contain defects in the form of cracks, voids and inclusions that can significantly affect their load carrying capabilities. Damage is easily initiates as micro-cracks around an inclusion due to the residual stresses and thermal mismatch between inclusion and matrix properties. Here, the authors are concerned with damaged materials, which due to straining are submitted to modifying microstructure processes, coalescence of voids, and microcracks. The damage phenomenon leads to a progressive deterioration of the material in the sense that its resisting capacity to subsequent loading is diminished. Finally, the computational significance of the model for state-update algorithms is analyzed the context of an explicit time-marching scheme
Keywords :
biological tissues; biomechanics; biomedical materials; bone; ceramics; composite materials; deformation; inclusions; internal stresses; microcracks; modelling; porous materials; voids (solid); damage phenomenon; deformation processes; explicit time-marching scheme; load carrying capabilities; matrix properties; modifying microstructure processes; porous media behavior modeling; progressive deterioration; residual stresses; resisting capacity; state-update algorithms; thermal effects; thermal mismatch; voids coalescence; Biological materials; Biological system modeling; Biological tissues; Bones; Ceramics; Composite materials; Context modeling; Microstructure; Residual stresses; Thermal stresses;
Conference_Titel :
Microtechnologies in Medicine and Biology, 1st Annual International, Conference On. 2000
Conference_Location :
Lyon
Print_ISBN :
0-7803-6603-4
DOI :
10.1109/MMB.2000.893822