Dynamic Response Analysis of Butt Joint of HTS-A Steel Considering Welding Residual Stresses

Abstract:

This paper uses both numerical simulation method and experimental research method to study on welding residual stress of high-strength steel of the cone-cylinder hull. Welding is often accompanied by a larger welding residual stress, which directly affects the safety and service life of the hull structure. In order to obtain the distribution of the welding residual stress, the welding procedure was developed by its parameter language by using FE analysis software in this paper. Then the welding residual stress of hot spot region was measured through X-ray nondestructive testing method, and compared it with simulation results. Finally, considering the residual stress as the initial stress, this paper analyzed dynamic response process of the welding structure under combined actions of the welding residual stress and multiaxial loads, which could more accurately determine the stress of welding structure and the location of fatigue risk point. According to the amplitude of damage parameters and strain time-history curve, we can estimate the fatigue life of structure by selecting the corresponding damage models.

• Periodical: Applied Mechanics and Materials (Volumes 423-426)
• Pages: 944-950
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.423-426.944
• Online since: September 2013
• Authors: Wei Shen*, Ren Jun Yan, Lin Xu, Kai Qin, Xin Yu Zhang, Li Ming Geng
• Keywords: Dynamic Response Analysis, Fatigue Damage, High Strength Steel (HSS), Welding Residual Stress, Welding Temperature Field

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