Finite element analysis of three - dimensional stress state of cracking tip for stretch slab 受拉平板裂紋尖端三維應(yīng)力狀態(tài)有限元分析
The famous smp ( matsuoka - nakai ) strength criterion in the three - dimensional stress state is brought into the formulas of the rakine soil pressure and the new formulas is proposed in the three - dimensional stress state in this paper 本文將著名的三維應(yīng)力狀態(tài)下的smp (松崗?中井)強(qiáng)度準(zhǔn)則應(yīng)用到朗肯土壓力計(jì)算公式中去,推導(dǎo)了三維應(yīng)力狀態(tài)下的朗肯土壓力計(jì)算公式。
Compared with the condition of the two - dimensional stress state , the influence of all the parameters to the results of the formulas of the critical edge load and critical load in the condition of the three - dimensional stress state is analyzed in the end of this paper 并通過實(shí)際的算例詳細(xì)的分析了臨塑荷載、臨界荷載中各個(gè)參數(shù)在二維應(yīng)力狀態(tài)下和三維應(yīng)力狀態(tài)下對(duì)計(jì)算結(jié)果進(jìn)行了影響程度分析。
The formulas of the critical edge load and critical load are expanded from the two - dimensional stress state to the three - dimensional stress state by using smp ( matsuoka - nakai ) strength criterion to substitute for mohr - coulomb strength criterion , and the new formulas are proposed in chapter three 本文將臨塑荷載、臨界荷載計(jì)算公式擴(kuò)展到三維應(yīng)力狀態(tài),應(yīng)用smp (松崗?中井)強(qiáng)度準(zhǔn)則替代莫爾?庫侖強(qiáng)度準(zhǔn)則,推導(dǎo)了三維應(yīng)力狀態(tài)下的臨塑荷載、臨界荷載計(jì)算公式。
The function of this model is more powerful , so the model can be used in three - dimensional stress state . using damage concept to reflect the phenomenon of continuous stiffness degeneracy and nonlinear behavior for concrete , combined material parameters with physical phenomenon of concrete makes the results with the model in three - dimensional stress state for concrete consist with experiment and settles the difficulty of calculate 該模型是一種功能較強(qiáng)的模型,可以用于混凝土三向受力的情況,采用損傷概念來反映混凝摘要土連續(xù)性剛度退化現(xiàn)象和非線性性能,把材料參數(shù)與混凝土一些物理現(xiàn)象組合在一起,使得這種模型應(yīng)用于混凝土三向受力時(shí)與實(shí)驗(yàn)結(jié)果的一致性和計(jì)算上的困難得以解決。