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RESET DISPLACEMENT TO ZERO
This option should be selected when irrelevant displacements of previous calculation steps are to be disregarded at the beginning of the current calculation phase, so that the new calculation starts from a zero displacement field. For example, deformations due to gravity loading are physically meaningless. Hence, this option is usually chosen after Gravity loading to remove these displacements. If the option is not selected then incremental displacements occurring in the current calculation phase will be added to those of the previous phase. The selection of the Reset displacements to zero option does not influence the stress field.
按照英文的含义指在该选项用于去除上一阶段的位移,将本阶段计算的位移从0开始,不采用该项时则incremental displacements会产生累加。且该选项不影响应力分布。但是问题在于:选用了该选项后,在OUTPUT子程序中
1:The Total displacements are the total vectorial displacements |u| at all nodes at the end of the current calculation step,
2: The Total increments are the vectorial displacement increments |u| at all nodes as calculated for the current calculation step,
按照上述的解释,我认为两者得到的值应该一致,但是实际确相差很大,对此到底应该如何理解和分析啊?Total displacements和The Total increments 到底应该如何理解这两个基本概念啊?
请各位多多指点,谢谢了 |
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