Commander & Director, U.S. Army Engineer Waterways Experiment Station, ATTN: CEWES-CT-C, 3909 Halls Ferry Road, Vicksburg, MS 39180-6199

38 -- ABAQUS/GENERAL FINITE ELEMENT SOFTWARE POC Contract Specialist, Jack A. Little, 601-634-3175 The U.S. Army Engineer Waterways Experiment Station (CEWES) proposes to award a contract to Hibbitt, Karlsson, and Sorensen, Inc., Pawtucket, RI, under authority of 40 U.S.C. 759(g), as amended for ABAQUS/General finite element software to be installed and operated on a CRAY C916. The contract will be awarded for lease plus maintenance to include product enhancements as they occur for a period of one year, with options to renew for two additional years. The Department of Defense (DOD) High Performance Computing Center at CEWES has a requirement for a finite element program designed for advanced structural and heat transfer analysis. Modeling tools must include one-, two-, and three-dimensional continuum elements as well as beams, membranes and shells. Elements should be formulated to provide accurate modeling for arbitrary magnitudes of displacement, rotations, and strains. The software must have the capability to remove and add elements during an analysis; and when adding elements, must be able to place the elements in a stress free state. Models must be provided for metals, rubber, plastics, composites, concrete, sand, clay, jointed rock, and resilient and crushable foam. Anisotropic material properties must be allowed. Models for general elastic, elastic-plastic, and elastic-viscoplastic analysis must be provided, as well as standard design theories for high temperature creep/fatigue evaluation of thin-walled piping components. An elastic-plastic fracture theory must be provided for concrete. The ability to extend the capabilities in the program and provide user-defined material models via user-supplied subroutines must be provided. The following types of analysis must be available: a. Linear and non-linear static analysis, including stress-displacement analysis. b. Linear dynamic analysis, including: (1) Determination of natural modes and frequencies (2) Response spectrum analysis (3) Time history response (4) Steady-state response to harmonic loading (5) Dynamic response to random loadings (6) Stress-displacement analysis c. Transient nonlinear dynamic analysis, including stress-displacement analysis d. Creep and swelling analysis e. Eigenvalue buckling load prediction f. Transient and steady-state heat transfer analysis g. Sequentially and fully coupled temperature-stress analysis h. Fully coupled piezoelectric analysis i. Steady-state and transient coupled effective stress/groundwater flow analysis for consolidation problems involving fully or partially saturated flow j. Fully coupled acoustic medium/structural vibration analysis k. Mass diffusion analysis l. A complete fracture mechanics design evaluation capability m. There should be no built-in limits on problem size. Smaller problems should run entirely in main memory. Buffering to secondary storage must occur automatically as the problem size increases. n. Program must also include modules designed specifically to serve advanced nonlinear continuum and structural analysis needs, including highly nonlinear transient dynamic phenomena and certain linear and non-linear quasi-static simulations. In order to solve highly transient dynamic phenomenon the program must have explicit time integration procedures implemented in a Lagrangian formulated finite element program. The program must provide capabilities for advanced contact surface algorithms for modeling impacts and sliding between multiple surfaces of different materials. The program must also provide the capability to include Equations of State and user specification of material behavior. (ABAQUS/Explicit) o. Program must also include modules designed specifically for analyzing the effects of underwater shocks on structures. (ABAQUS/USA) p. Require an interactive, graphical postprocessing module for the finite element code. Capabilities should include model plotting, deformed geometry plotting, contours of results, animation, and x-y plotting. Printed output and the interactive interrogation of the model and results must also be provided. (ABAQUS/Post) The software must run on a CRAY C916/161024 supercomputer located at the CEWES, Vicksburg, MS. The software must be supported by the UNICOS operating system version 8.0 and later. The delivered software's internal solution algorithms must be specifically optimized for maximum performance on the CRAY C916 system. The delivered software shall be compiled on a CRAY C916 system with current production versions of the UNICOS operating system and any required libraries. The software shall, at user-selectable option, permit the concurrent/parallel use of any number of C916 processors (up to 16) to be used in the solution of a single problem. The software will be made available for unlimited usage to any authorized DoD user, including those who access the system from remote locations. The foregoing described software is the only known commercial software directly compatible with DOD requirements. Any inquiries should be received within 15 days from the date of this publication. Solicitation documents are not available. (0100)

Loren Data Corp. http://www.ld.com (SYN# 0294 19950411\38-0001.SOL)