Embedding of Constitutive Iterative Algorithm in LS-DYNA

doi:10.19596/j.cnki.1001-246x.7636

Abstract

Abstract: We developed and improved constitutive model, using LS-DYNA second development technology to embed a damaged Johnson-Cook constitutive model of commercial finite element software.Detailed description of structure of iterative algorithm and calculation process are presented. For experiments of perforation of 12 mm thick steel plates by 20 mm diameter projectiles with flat and conical noses, numerical simulations are carried out. Calculation and experiment results are consistent well. It indicates that constitutive algorithm, containing damage constitutive model and damage evolution equation are reasonable and reliable.

Key words: mechanics of explosion, penetration, constitutive iterative algorithm, second development

CLC Number:

O385

JIANG Dong, LI Yongchi. Embedding of Constitutive Iterative Algorithm in LS-DYNA[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2018, 35(3): 262-268.

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