Accession Number : AD0691028

Title :   PARAMETRIC STUDY OF TSAI'S STRENGTH CRITERIA FOR FILAMENTARY COMPOSITES.

Descriptive Note : Technical rept.,

Corporate Author : AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Sandhu,R. S.

Report Date : MAY 1969

Pagination or Media Count : 35

Abstract : A parametric study of Tsai's strength criteria for unidirectional filamentary composites is presented. The purpose of this study is to determine the fiber orientation for the maximum strength under a given biaxial state of stress. The investigation indicates that the best fiber orientation depends upon the shear strength of the material in relation to its transverse strength. When the shear strength is less than the transverse strength, the optimum fiber orientation coincides with the principal stress direction. However, when the shear strength is greater than the transverse strength, the best fiber orientation does not always coincide with the principal stress direction. The results of this study are presented in the form of plots. The plots together with the equations presented in the text aid in determining the optimum orientation. (Author)

Descriptors :   (*COMPOSITE MATERIALS, STRESSES), FILAMENTS, REINFORCING MATERIALS, OPTIMIZATION, ALIGNMENT, MECHANICAL PROPERTIES

Subject Categories : Laminates and Composite Materials
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE