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Comparison of strain results at a laser weld notch obtained by numerical calculations and experimental measurements
Abstract
In the development of ship structures applying new materials and it’s purposeful placement play an important role. During the last years, especially in a construction of ro-ro type vessels, the usage of novel sandwich structures in cargo decks is profitable. Steel sandwich panel is an innovative solution which at a todays state of development can be used for the construction of any members not taking part in a global bending of a hull. The one important reason for this is a lack of knowledge and experience in the fatigue assessment. The problem of fatigue assessment of the steel sandwich structures arises from no typical welds connecting its structural components. The joints are fabricated by the use of laser welding technique, or hybrid welding. Standard methodology for the fatigue analysis is local stress approach or local strain approach. In both methods the crucial aspect is determination of a maximum values of strains and stresses. The most effective technique to designate these values is numerical modelling with the use of Finite Element Method or Boundary Element Method. In this paper the comparison of local stresses at a weld notch obtained by two independent methods is presented. The results calculated by the Finite Element Analysis are being compared with the experimental one measured by the use of laser extensometer grid technique. The goal of this comparison is verification of the main numerical modelling assumptions.
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- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1063/1.4965946
- License
- Copyright (2016 AIP Publishing)
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- Category:
- Conference activity
- Type:
- materiały konferencyjne indeksowane w Web of Science
- Published in:
-
AIP Conference Proceedings
no. 1780,
edition 1,
pages 1 - 8,
ISSN: 0094-243X - Title of issue:
- 26th Polish National Conference on Fatigue Failure and Fracture Mechanics strony 1 - 8
- ISSN:
- 0094-243X
- Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Niklas K., Kozak J..: Comparison of strain results at a laser weld notch obtained by numerical calculations and experimental measurements, W: 26th Polish National Conference on Fatigue Failure and Fracture Mechanics, 2016, AMER INST PHYSICS,.
- DOI:
- Digital Object Identifier (open in new tab) 10.1063/1.4965946
- Verified by:
- Gdańsk University of Technology
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