翻訳と辞書 Words near each other ・ T-cell vaccination ・ T-cell vaccine ・ T-Center ・ T-Centralen ・ T-class ferry ・ T-class submarine ・ T-closeness ・ T-code ・ T-Coffee ・ T-coloring ・ T-comma ・ T-commerce ・ T-complex 1 ・ T-Connection ・ T-cophony ・ T-criterion ・ T-distributed stochastic neighbor embedding ・ T-Dog ・ T-Dog (The Walking Dead) ・ T-Dre Player ・ T-duality ・ T-Engine Forum ・ T-FLEX CAD ・ T-Force ・ T-Force (disambiguation) ・ T-Force (film) ・ T-function ・ T-glottalization ・ T-group ・ T-group (mathematics) Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク T-criterion ： ウィキペディア英語版 T-criterion The T-failure criterion is a set of material failure criteria that can be used to predict both brittle and ductile failure. 〔 〔 These criteria were designed as a replacement for the von Mises yield criterion which predicts the unphysical result that pure hydrostatic tensile loading of metals never leads to failure. The T-criteria use the volumetric stress in addition to the deviatoric stress used by the von Mises criterion and are similar to the Drucker Prager yield criterion. T-criteria have been designed on the basis of energy considerations and the observation that the reversible elastic energy density storage process has a limit which can be used to determine when a material has failed. ==Description== The strain energy density stored in the material and calculated by the area under the $\backslash bar$-$\backslash bar$ curve represents the total amount of energy stored in the material only in the case of pure shear. In all other cases, there is a divergence between the actual and calculated stored energy in the material, which is maximum in the case of pure hydrostatic loading, where, according to the von Mises criterion, no energy is stored. This paradox is resolved if a second constitutive equation is introduced, that relates hydrostatic pressure p with the volume change $\backslash Theta$. These two curves, namely $\backslash bar-\backslash bar$ and (p-$\backslash Theta$) are essential for a complete description of material behaviour up to failure. Thus, two criteria must be accounted for when considering failure and two constitutive equations that describe material response. According to this criterion, an upper limit to allowable strains is set either by a critical value ΤV,0 of the elastic energy density due to volume change (dilatational energy) or by a critical value ΤD,0 of the elastic energy density due to change in shape (distortional energy). The volume of material is considered to have failed by extensive plastic flow when the distortional energy Τd reaches the critical value ΤD,0 or by extensive dilatation when the dilatational energy Τv reaches a critical value ΤV,0. The two critical values ΤD,0 and ΤV,0 are considered material constants independent of the shape of the volume of material considered and the induced loading, but dependent on the strain rate and temperature. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「T-criterion」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.