TREATMENT OF SINGULARITY AND ERROR ESTIMATION IN RIGID VISCOPLASTIC FINITE ELEMENT MODELING

›› 1992, Vol. 28 ›› Issue (4): 42-46.

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TREATMENT OF SINGULARITY AND ERROR ESTIMATION IN RIGID VISCOPLASTIC FINITE ELEMENT MODELING

Meng Yonggang

National Tribology Laboratory, Qinghua University

Published:1992-07-01

Abstract

Abstract: In order to overcome difficulties caused by the existence of singular points in simulation of forging and extrusion of metals, a local mesh refinement technique has been developed. The effectiveness of the technique was verified according to the error estimation procedure proposed by Zienkiewicz O C at al. Simulation results of several forming processes shown that this technique is useful to reduce solution error and to decrease the influence of singularity.

Key words: 挤压, 模锻, 模拟, 塑性, 有限元法

Meng Yonggang. TREATMENT OF SINGULARITY AND ERROR ESTIMATION IN RIGID VISCOPLASTIC FINITE ELEMENT MODELING[J]. , 1992, 28(4): 42-46.

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TREATMENT OF SINGULARITY AND ERROR ESTIMATION IN RIGID VISCOPLASTIC FINITE ELEMENT MODELING

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