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Computer Aided Design Environment for Composites (CADEC) 14.1.6392.14245

Software Support for Introduction to Composite Materials Design-- 2nd Edition, CRC (2011) by Ever J. Barbero

Micromechanics

Micromechanics is the study of composite materials taking into account the interaction of the constituent materials in detail. Micromechanics allows the designer to represent an heterogeneous material as an equivalent homogeneous material, usually anisotropic. CADEC implements micromechanics calculations for three types of laminas, classified according to the type of fiber reinforcement used: unidirectional, random, and fabric. All three can be accessed from here. For each of them, CADEC implements the equations derived and explained in the textbook. Based on the properties of the fiber and matrix, CADEC can predict most properties of the lamina, including:

  • Young modulus and Poisson's ratio (all components)
  • Hygrothermal properties (thermal and moisture expansion coefficients)
  • Transport properties (Electrical conductivity, thermal conductivity, mass difussivity)
  • Strength values in all directions
  • Fracture toughness (modes I and II)
CADEC does these calculations by a multiple methods to let the user compare results from various micromechanics equations, including:
  • Cylindrical assemblage
  • Halpin-Tsai
  • Periodic microstructure model (PMM)
  • Rule of mixtures (ROM, Woldemar Voigt (1887)) and the inverse ROM (A. Reuss (1929))
  • Stress partitioning

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