Inelastic Response of Metal Matrix Composite Tubes

by Robert S. Salzar, Univ of Virginia, Charlottesville, United States,
Furman W. Barton, Univ of Virginia, Charlottesville, United States,

Document Type: Proceeding Paper

Part of: Engineering, Construction, and Operations in Space IV


An analytical method which exactly satisfies the equations of the boundary value problem for the inelastic response of laminated metal matrix composite tubes on a point-wise basis is presented. Due to the lack of a generally accepted constitutive relation for the inelastic behavior of metal matrix composites, the micromechanics relations known as `the method of cells' is used to compute the effective elastic composite behavior as well as the incremental inelastic response. The method of successive elastic approximations is then utilized in an iterative process to obtain the plastic strain distribution through the thickness of the composite laminate. Possible loading conditions include axisymmetric axial and thermal loading, internal and external pressure, and axial torque. Structural applications include light weight truss members, as well as pressure vessels.

Subject Headings: Composite materials | Laminated materials | Elasticity and Inelasticity | Approximation methods | Thermal loads | Matrix (mathematics) | Tubes (structure)

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