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28159 ASRA-HPC

Advanced Structural Reliability Analysis
on High Performance Computers

Keywords : High Performance Computing and Networking
optimization, reliability, Technical : response surface, FORM, SORM
Uses : optimum and reliable design
Industrial Applications : nuclear safety, aerospace engineering, shipbuilding

The ASRA-HPC project will result in an integrated engineering software system for the reliability oriented optimum design of mechanical components. The optimum can be found either with respect to weight (cost) under reliability constraints or with respect to reliability under weight (cost) constraints for safety critical structures. The aim is a one-level optimization that is achieved by introducing reliability as the objective or as an additional constraint. On the basis of existing advanced finite element and reliability analysis methods the project will implement two complementary approaches to the optimization problem: general response surface methodology for the reliability/finite element interface and a direct method based on sensitivities for general nonlinear surfaces (FORM/SORM).

The objective is to create a user-friendly, HPCN based software system exploiting the computational technology by demonstrating the methods on a variety of parallel platforms including clusters of workstations under Windows-NT and Unix with realistically large, industrial relevant models. The project is based on two well established European commercial codes for finite element analysis (PERMAS) and reliability analysis (COMREL/SYSREL).

The industrial partners in the project expect to be able to explore new design strategies by applying nonlinear static analysis and dynamics and at the same time to be able to optimize reliability, i.e. maximize reliability under cost constraints. Selected case studies within nuclear safety, aerospace engineering and shipbuilding will be validated by the industrial partners. The most important aspect for all partners is a further extension of numerical optimization methods in an early design stage, producing lightweight and reliable products.

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