نتایج جستجو برای: failure criterion
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It has recently been reported that the equal load sharing fiber bundle model predicts rate of change elastic energy stored in reaches its maximum before catastrophic failure occurs, making it a possible predictor for imminent collapse. The does not contain central mechanisms often play an important role processes, such as localization. Thus, there is obvious question whether similar phenomenon ...
One of the most intricate problems in terminal ballistics is the physics underlying penetration and perforation. Several penetration modes are well identified, such as petalling, plugging, spall failure and fragmentation (Sedgwick, 1968). In most cases, the final target failure will combine those modes. Some of the failure modes can be due to brittle material behavior, but penetration of ductil...
BACKGROUND Finite element simulation has been used in last years for analysing the biomechanical performance of post-core restorations in endodontics, but results of these simulations have been interpreted in most of the works using von Mises stress criterion. However, the validity of this failure criterion for brittle materials, which are present in these restorations, is questionable. The obj...
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