用workbench做梁的三点弯曲问题？ 30

报错信息是这样的：an internal solution magnitude limit was exceeded. please check your environment for inappropriate load values or insufficient support. also check that your mesh has more than 1 element in at least 2 directions if solid brick elements are present(超过了内部解决方案的大小限制。请检查您的环境中是否存在不适当的加载值或不充分的支持。另外，如果存在实心砖元素，请检查网格在至少两个方向上是否有一个以上的元素。)