elements have zero length，or the element aspect ratio may exceed 1000 to 1

wscg9876

Normal cannot be computed in 832 elements. The nodal coordinates may be incorrect or the element aspect ratio may exceed 1000 to 1. The elements have been identified in element set ErrElemNormal.
832 elements have zero length. The elements have been identified in element set ErrElemZeroLength.
832 elements are close to parallel with their beam section axes. The elements have been identified in element set ErrElemAxisDir.
The Abaqus Input File Processor has exited because there is insufficient memory available. A limit of 49 percent of physical memory was specified using the memory parameter. The physical memory available on the machine in use is 1919.17 megabytes. The user should consider either increasing the memory available to Abaqus or switching to a machine with more memory.
Analysis Input File Processor exited with an error.
我知道最后一个是内存不足 前面那些究竟是什么问题啊 求指教！