abaqus如何进行螺旋轴的网格划分，才算正确？

我在用abaqus进行螺旋轴的显式动力学分析，进行网格划分时，整个模型分割成了螺旋和轴两部分

放着两部分分别进行了疏密不同的网格划分，但是网格质量检查室，发现了上图（左）的现象，黄色的单元出现了警告。提交作业没有错误，但是分析结果如上图（右）所示，监控里面有警告如下：

The option *boundary,type=displacement has been used; check status file between steps for warnings on any jumps prescribed across the steps in displacement values of translational dof. For rotational dof make sure that there are no such jumps. All jumps in displacements across steps are ignored

Degree of freedom 4 is not active in this model and can not be restrained

370 elements are distorted. Either the isoparametric angles are out of the suggested limits or the triangular or tetrahedral quality measure is bad. The elements have been identified in element set WarnElemDistorted.

There are 3 warning messages in the data (.dat) file.  Please check the data file for possible errors in the input file.

请问一下大神，我该如何解决这个问题