Simple structures tests for elastic-plastic strain acceptance criterion validation

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Description

A Simple Structures Test Program was performed where several cantilevered beam and fixed-end beam test specimens were subjected to a series of analytically predetermined rapidly applied transient dynamic input loads. The primary objective of the test program was to obtain dynamic nonlinear response for simple structures subjected to these load inputs. Data derived from these tests was subsequently used to correlate to analysis predictions to assess the capability to analytically predict elastic-plastic nonlinear material behavior in structures using typical time-dependent (transient) design methods and the ABAQUS finite element analysis code. The installation of a significant amount of instrumentation on these ... continued below

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7 p.

Creation Information

Trimble, T.F. & Krech, G.R. November 1, 1996.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 11 times . More information about this report can be viewed below.

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  • Trimble, T.F. Electric Boat Corp., Groton, CT (United States)
  • Krech, G.R. Wyle Labs., Inc., Huntsville, AL (United States)

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Description

A Simple Structures Test Program was performed where several cantilevered beam and fixed-end beam test specimens were subjected to a series of analytically predetermined rapidly applied transient dynamic input loads. The primary objective of the test program was to obtain dynamic nonlinear response for simple structures subjected to these load inputs. Data derived from these tests was subsequently used to correlate to analysis predictions to assess the capability to analytically predict elastic-plastic nonlinear material behavior in structures using typical time-dependent (transient) design methods and the ABAQUS finite element analysis code. The installation of a significant amount of instrumentation on these specimens and post-test measurements enabled the monitoring and recording of strain levels, displacements, accelerations, and permanent set. An assessment of modeling parameters such as the element type and mesh refinement was made using these test results. In addition, currently available material models and the incremental time step procedure used in the transient analyses were evaluated. Comparison of test data to analysis results shows that displacements, accelerations, and peak strain can be predicted with a reasonable level of accuracy using detailed solid models of the tested specimens. Permanent set is overpredicted by a factor of approximately two. However, the accuracy of the prediction of permanent set is being enhanced by updating material modeling in the ABAQUS code to account for effects of strain reversal in oscillatory behavior of dynamically loaded specimens.

Physical Description

7 p.

Notes

OSTI as DE98006442

Source

  • 1996 international mechanical engineering congress and exhibition, Atlanta, GA (United States), 17-22 Nov 1996

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  • Other: DE98006442
  • Report No.: KAPL-P--000035
  • Report No.: CONF-961105--
  • Grant Number: AC12-76SN00052
  • DOI: 10.2172/663571 | External Link
  • Office of Scientific & Technical Information Report Number: 663571
  • Archival Resource Key: ark:/67531/metadc710321

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • November 1, 1996

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • May 18, 2016, 2:32 p.m.

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Trimble, T.F. & Krech, G.R. Simple structures tests for elastic-plastic strain acceptance criterion validation, report, November 1, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc710321/: accessed November 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.