我做了一个地下硐室动力分析问题,模型除底面采用铰支固定外,其他侧面都采用的应力边界,模拟静力情况下和动力情况下硐室周围剪应变有什么显著变化,静力时还算理想,但动力计算时就感觉完全不对了,我想是不是动力分析边界除问题了?手册上有关应力边界动力模拟的‘If a stress boundary condition is used during the static solution, a stress boundary condition of opposite sign must also be applied over the same boundary when the quiet boundary is applied for the dynamic phase. This will allow the correct reactio.