Computer Program (NOLAST) for Non-Linear Analysis of Composite Laminates

Abstract

The computer program NOLAST predicts the response of multidirectional laminates subjected to in-plane loads. It uses piecewise cubic spline interpolation functions to represent the basic stress-strain data. This yields smooth composite strain-strain curves from which accurate moduli of elasticity over the entire range can be determined. Loads are applied incrementally. The predictor corrector and iterative method employed renders the present approach practically independent of the size of load increment. The ultimate cumulative response of the laminate is determined by ply-wise application of an energy based failure criterion.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1976
Accession Number
ADB010592

Entities

People

  • R. S. Sandhu

Organizations

  • Flight Dynamics Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Cyber
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aerospace Craft
  • Air Force
  • Biaxial Stresses
  • Composite Materials
  • Computer Programs
  • Computers
  • Dynamics
  • Elastic Properties
  • Failure Mode And Effect Analysis
  • Laminates
  • Materials
  • Mechanical Properties
  • Modulus Of Elasticity
  • Stress Analysis
  • Stress Strain Relations
  • Stresses
  • Test And Evaluation

Readers

  • Approximation Theory.
  • Structural Health Monitoring of Composite Structures.