Accession Number:

ADA080210

Title:

Analytical Modelling of Structural Distortion in Ship Structures Produced by Welding

Descriptive Note:

Technical rept. no. 2, Jul 1977-Jul 1978

Corporate Author:

GENERAL DYNAMICS GROTON CT ELECTRIC BOAT DIV

Personal Author(s):

Report Date:

1979-12-01

Pagination or Media Count:

92.0

Abstract:

This report describes the results of an investigation of the weld distortions produced in the welding of two simply supported plates. The analytical and experimental data for a multi-pass submerged arc weld of a balanced double-vee groove weld are presented. The analytical results were obtained using two mathematical approaches. The first approach used was a quasi- linear approach identified as the Shrinkage Force Method. This method utilizes estimates of the cooldown forces in the weld region due to weld deposit and subsequent remelt, to predict distortion. The second approach employs a full nonlinear thermoplastic analysis to predict distortions and residual stresses. Several different mathematical models were employed in the study and the results obtained are compared with experimental data.

Subject Categories:

  • Numerical Mathematics
  • Manufacturing and Industrial Engineering and Control of Production Systems
  • Marine Engineering
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE