In this paper, the constitutive model of material stability considering material damage evolution
in Abaqus finite element software and the VUMAT stability constitutive model are used
to simulate the progressive collapse progress of a single-layer latticed arch shell structure
under an adverse load by applying the ultimate load. The results show that the progressive
collapse of the single-layer latticed arch shell structure is mainly caused by material instability,
and the damage range is large when the material stability constitutive model considering
material damage evolution is adopted.When using VUMAT stability constitutive model, the
progressive collapse form of the single-layer latticed arch shell structure shows a trend of
extending from the top and bottom areas to the intermediate, and finally expanding from
the intermediate to the vertical area of the single-layer latticed arch shell. Moreover, this
kind of progressive collapse with a certain sequence due to destabilization damage of the
bar is more in line with the actual engineering conditions, and it is convenient to describe
the progressive collapse process in detail.
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