Research on Mechanical Properties of Locking Cap Lap Welds and Partitioned Seam Weld Model

doi:10.16183/j.cnki.jsjtu.2017.11.003

Abstract

Abstract: Locking caps are widelyused components in large engineering projects such as nuclear reactors and mining machines. In order to improve the precision of weld FE model and fatigue life prediction, it is required to obtain accurate microstructure and mechanical properties of the weld zone. In this research,the microstructure performance was studied by metallography, combined with hardness test and empirical formula to obtain stressstrain parameters of small regional organizations of the weld. Based on this, a partitioned seam weld modeling method was developed. The method was verified by quasistatic tensile test and lays the foundation for further analysis of failure mechanism and fatigue life prediction of weld zone.

Key words: locking cap, weld microstructure, mechanical property, partitioned model

CLC Number:

TG 407

JIN Xue,ZHU Ping,LI Han,WANG Qing. Research on Mechanical Properties of Locking Cap Lap Welds and Partitioned Seam Weld Model[J]. Journal of Shanghai Jiaotong University, 2017, 51(11): 1297-1303.

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