We now imagine that the deviator load is increased sufficiently to produce a slow rupture of the sample . 現(xiàn)在設(shè)想偏載荷增加到足以使試件緩慢破壞。
A fracture criterion based on the deviator strain energy density factor 形狀改變比能密度因子斷裂準(zhǔn)則
The latest experimental results of rock creep were used : the third invariant of deviator stress tensor had greater effect on creep properties ; the stress threshold of lateral creep of rock was 20 % ~ 40 % less than that of axial creep of the same rock 文中應(yīng)用了課題組近期巖石流變實(shí)驗(yàn)研究的結(jié)果:應(yīng)力偏量第三不變量對(duì)巖石蠕變影響顯著;巖石側(cè)向蠕變的應(yīng)力閥值比軸向蠕變應(yīng)力閥值低20 % ~ 40 % 。
According to the test results of localization and shear bands formation under the consolidated undrained plane strain compression tests on soft clay in shanghai , it was found that the deviator stress of shear band beginning to form was very close to its yield point in clay soils 摘要根據(jù)上海軟土在固結(jié)不排水平面應(yīng)變壓縮試驗(yàn)條件下應(yīng)變局部化和剪切帶形成的實(shí)測(cè)研究結(jié)果,發(fā)現(xiàn)粘性土剪切帶開始形成的偏應(yīng)力為其屈服點(diǎn)。
Based on the duncan - chang e - b model , which can simulate earth - rock dam ' s non - linear mechanics behavior well , the paper introduced the nature coordinate system to the stress space . in this way , hydrostatic stress and stress deviator were decomposed each other . therefore , a partial derivative formulation about displacement and parameter in finite element evaluation was derived in a closed form 論文以能較好模擬土石壩非線性力學(xué)行為的duncan - change - b模型為基礎(chǔ),通過引入應(yīng)力空間下的自然坐標(biāo)系,分解應(yīng)力球量與應(yīng)力偏量,從而導(dǎo)出一個(gè)在有限元計(jì)算中,位移對(duì)參數(shù)偏導(dǎo)數(shù)的閉合形式公式。