Study on progressive collapse of single-layer arch shell structure based on VUMAT stability constitutive model
Tao Li 1
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Beijing Construction Engineering Group Co., Ltd., Beijing, China
China Agricultural University, Department of Civil Engineering, Beijing, China
Submission date: 2022-05-11
Final revision date: 2022-06-02
Acceptance date: 2022-06-02
Online publication date: 2022-07-30
Publication date: 2022-07-30
Journal of Theoretical and Applied Mechanics 2022;60(3):535-545
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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