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 广义应力 添加此单词到默认生词本
generalized stress

  1. 研究了广义应力广义强度同时具有模糊性和随机性时的结构可靠度计算问题,基于模糊随机变量和模糊随机事件的理论,建立了结构模糊可靠度的计算模型.最后通过一算例,验证了该方法的有效性和合理性.
    Based on the fuzzy random theories and fuzzy random event,in this paper the method of structural fuzzy reliability analysis is developed when the fuzziness and randomness of generalized stress and generalized strength are considered.An example is used to demonstrate the feasibility and reasonablity of the presented method by using fuzzy random simulation.
  2. 文摘:利用优化非协调元和杂交元分析了三河尖矿冲击矿压,并与ANSYS程序的计算结果进行了比较.认为优化有限元在冲击矿压乃至岩石材料的数值模拟中能给出更为精确的结果,也可减小大型计算中由于人力、机时所限粗分网格产生的误差.分析中,采用了广义平均应力率准则来判断冲击点位置和冲击时刻,所得结论与实际情况吻合.
    Abstract: Incompatible element NH11 and hybrid stress element 18β were employed to analyze rock burst occurring in coal face 9108 of Sanhejian Coal Mine.Compared with the results from ANSYS,the two optimized FEMs can execute more accurate numerical simulation in the research of rock burst as well as other rock problems and lessen the errors from inaedquately meshing in huge calculations due to the limitation of labor and computer time.In addition,the criterion of averaged generalized stress rate was proposed and used to determine the site and moment of rock burst.The given conclusion is in accordance with the face of coal face 9108 very well.
  3. 文摘:本文提出的土体弹塑性应力应变关系的完全应力增量表述,可把应力洛德角变化对土体应力应变关系的影响归因于应力增量中广义剪分量引起的剪切屈服与剪胀。
    Abstract: According to the complete stress increment formulation of soil elastoplastic stress-strain relation presented in this paper, the effect of Lode angle variation of stress is owing to the shear yield and dilatancy of the generalized shear division of stress increment.



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