基于体单元生成的surface法向的判断
前提，ＡＢＡＱＵＳ模板下目的，想利用DSLOAD来施加均布载荷。
问题，基于体单元生成的surface法向如何判断，该法向是否可调（如反向）
疑问，abaqus帮助（分析手册P122页）中有说：
1 For continuum solid or a continuum shell elements with the distributed load on an explicitly identified facet, the force vector acts against the outward normal of that facet. （载荷逆着面的法向？）
2 Distributed pressure loads can be specified on a surface formed over elements; a positive applied pressure results in a force vector acting against the local surface normal.（正值的压力载荷产生逆着表面法向的作用效果？）
问题来了，简单的做了个实例，效果并不是和帮助中所说一样。。。
请达人指点。谢谢。
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