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Title: Code System for Analysis of 3-D Reinforced Concrete Structures.

Version 00 NONSAP-C is a finite element program for determining the static and dynamic response of three-dimensional reinforced concrete structures. Long-term, or creep, behavior of concrete structures can also be analyzed. Nonlinear constitutive relations for concrete under short-term loads are incorporated in two time-independent models, a variable-modulus approach with orthotropic behavior induced in the concrete due to the development of different tangent moduli in different directions and an elastic-plastic model in which the concrete is assumed to be a continuous, isotropic, and linearly elastic-plastic strain-hardening-fracture material. A viscoelastic constitutive model for long-term thermal creep of concrete is included. Three-dimensional finite elements available in NONSAP-C include a truss element, a multinode tendon element for prestressed and post tensioned concrete structures, an elastic-plastic membrane element to represent the behavior of cavity liners, and a general isoparametric element with a variable number of nodes for analysis of solids and thick shells.
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RSICC ID: P00458C7600
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Owner Installation: LOS ALAMOS NATIONAL LABORATORY Contributors: Los Alamos National Laboratory, Los Alamos, New Mexico through the Energy Science and Technology Software Center, Oak Ridge, Tennessee. NONSAP-C uses the isoparametric finite element formulation. Dynamic problems are solved by integration of the equations of motion in the time domain using either the Wilson-Theta or Newmark-Beta integration algorithms. Equilibrium iteration or stiffness reformulation schemes can be applied in solving the nonlinear discretized equations. KEYWORDS: NUCLEAR SAFETY; CONTAINMENT
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
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Country of Publication:
United States

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