在ABAQUS隐式动力学仿真怎么切换成显示动力学呢？

隐式动力可以仿真完成，我把分析步全部改成显示动力后，报错了。我添加的边界条件都是转动，为什么动不了呢？转动部分用的刚体约束，求大神指点下！

There is no element available in the model to control the stable time increment for Step 1. Please add a deformable element to control the stable time increment. Alternatively, you can use DIRECT TIME INCREMENTATION to perform the analysis at a user specified time increment.