Study of Residual Stresses and Distortion in Structural Weldments in High-Strength Steels.

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Abstract:

Numerical analyses based on the finite element method for the prediction of temperatures, thermal strains, and residual stresses due to welding and of the fracture characteristics of weldments are detailed. The obtained results are compared with experimentally obtained data from butt welding 1 in thick HY-130 steel plates using the gas metal arc process. Experimental results on the effects various welding parameters have on the welding distortion of Nickel-Aluminum bronze thin weldments are also included. Optimum welding procedures are then proposed. Finally, initial efforts toward studying the thermal stress relieving operation are outlined. They include a simple mathematical model for the description of the phenomena involved and a series of experiments. Author

Author(s):
Papazoglou, Vassilios J. ; Masubuchi, Koichi
Author Organization(s):
MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF OCEAN ENGINEERING
Descriptive Note:
Technical progress rept. no. 3, 1 Dec 80-30 Nov 81,
Pagination:
0142

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
N00014-75-C-0469
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_1.2.7_Experimentation; JCA_5.5.2_Task; JCA_5.5_Direct; JCA_4.6_Engineering; JCA_1.2.5_Lessons Learned; JCA_1.3.2_Personnel Management; JCA_5.2.2_Develop Knowledge and Situational Awareness; JCA_5.2_Understand
Modernization Areas:
Fully Networked C3
Communities of Interest:
Ground and Sea Platforms
Descriptor(s):
*Steel, *Weldments, *Welding, *Residual stress, Distortion, Numerical analysis, Fracture(Mechanics), Heat transfer, Thermal analysis, Finite element analysis, Phase transformations, Stress relieving, Metal plates, High strength alloys, Aluminum alloys, Bronze, Nickel alloys, Mathematical models
Field(s)/Group(s):
Properties of Metals and Alloys, Fabrication Metallurgy, Mechanics
Keyword(s):
Steel HY 130
Report Date:
1981 Nov 30