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从提示看网格没有划分好。
你用的是SOLID65这种是6面体单元(是可以退化成4面体的),但太多了超过了10%,4面体单元偏硬,求解结果不好,看一看帮助:
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SOLID65 Element Description
SOLID65 is used for the 3-D modeling of solids with or without reinforcing bars (rebar). The solid is capable of cracking in tension and crushing in compression. In concrete applications, for example, the solid capability of the element may be used to model the concrete while the rebar capability is available for modeling reinforcement behavior. Other cases for which the element is also applicable would be reinforced composites (such as fiberglass), and geological materials (such as rock). The element is defined by eight nodes having three degrees of freedom at each node: translations in the nodal x, y, and z directions. Up to three different rebar specifications may be defined。。。。。” |
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