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为模拟岩石的无张力性质,晋基维茨(Zienkiewicz)曾建议并且采用“应力转移法”进行无张力分析。任何应被减少的张应力经过一个迭代过程之后就可被近似地消除。迭代所进行的次数必须持续到张应力全部被消除(近似的)为止。 本文给出了一个仅需一次迭代就可消除(精确地)张应力的矩阵。将应减少的张应力乘以该矩阵之后仅需进行一次迭代就可达到“应力转移”的目的,大大加快了系统的收敛速度,节省了应用“应力转移法”进行无张力分析所耗费的大量计算机时。
To simulate the tension-free nature of rock, Zienkiewicz suggested and applied the “stress transfer method” for tension-free analysis. Any tensile stress that should be reduced can be approximately eliminated after an iterative process. The number of iterations must be continued until all tensile stresses are eliminated (approximated). This paper presents a matrix that eliminates (exactly) tensile stress with only one iteration. Multiply the reduced tensile stress by the matrix and only need one iteration to achieve the goal of “stress transfer”, which greatly speeds up the system’s convergence speed and saves a lot of the expense of using the “stress transfer method” to perform tension-free analysis. Computer time.