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Saeed Ziaei-Rad

Bio: Saeed Ziaei-Rad is an academic researcher from Isfahan University of Technology. The author has contributed to research in topics: Finite element method & Vibration. The author has an hindex of 30, co-authored 177 publications receiving 3056 citations. Previous affiliations of Saeed Ziaei-Rad include University of Isfahan & Imperial College London.

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TL;DR: In this paper, it was shown that the properties of the ferrite phase change with distance from the martensite grains, leading to the idea that local hardening is caused by geometrically necessary dislocations.

326 citations

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TL;DR: In this paper, both experimental and numerical methods were employed to investigate the mechanism of failure in dual phase steels and the results can be considered as a first report for the commercial DP800 steel.

194 citations

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TL;DR: In this paper, a finite element (FE) model for empty thin-walled tubes was constructed and validated by available experimental and numerical data, and good agreement was observed between the results from the model with those obtained by analytical relations and experimental test data.

145 citations

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TL;DR: The coefficient of power function was shown to depend on relative density, geometry and fatigue properties of the bulk material while the exponent was only dependent on the fatigue behavior of the Bulk material.

96 citations

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TL;DR: In this article, the failure mechanism of Ti6Al4V compressor blades of an industrial gas turbine was analyzed by means of both experimental characterisations and numerical simulation techniques Several premature failures occurred in the high pressure section of the compressor due to the fracture of the blade roots.

92 citations

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01 May 1993
TL;DR: Comparing the results to the fastest reported vectorized Cray Y-MP and C90 algorithm shows that the current generation of parallel machines is competitive with conventional vector supercomputers even for small problems.
Abstract: Three parallel algorithms for classical molecular dynamics are presented. The first assigns each processor a fixed subset of atoms; the second assigns each a fixed subset of inter-atomic forces to compute; the third assigns each a fixed spatial region. The algorithms are suitable for molecular dynamics models which can be difficult to parallelize efficiently—those with short-range forces where the neighbors of each atom change rapidly. They can be implemented on any distributed-memory parallel machine which allows for message-passing of data between independently executing processors. The algorithms are tested on a standard Lennard-Jones benchmark problem for system sizes ranging from 500 to 100,000,000 atoms on several parallel supercomputers--the nCUBE 2, Intel iPSC/860 and Paragon, and Cray T3D. Comparing the results to the fastest reported vectorized Cray Y-MP and C90 algorithm shows that the current generation of parallel machines is competitive with conventional vector supercomputers even for small problems. For large problems, the spatial algorithm achieves parallel efficiencies of 90% and a 1840-node Intel Paragon performs up to 165 faster than a single Cray C9O processor. Trade-offs between the three algorithms and guidelines for adapting them to more complex molecular dynamics simulations are also discussed.

29,323 citations

01 Jan 1991
TL;DR: In this paper, the Third Edition of the Third edition of Linear Systems: Local Theory and Nonlinear Systems: Global Theory (LTLT) is presented, along with an extended version of the second edition.
Abstract: Series Preface * Preface to the Third Edition * 1 Linear Systems * 2 Nonlinear Systems: Local Theory * 3 Nonlinear Systems: Global Theory * 4 Nonlinear Systems: Bifurcation Theory * References * Index

1,977 citations

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TL;DR: This review paper identifies a novel classification of flying drones that ranges from unmanned air vehicles to smart dusts at both ends of this spectrum, with their new defined applications.

828 citations

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18 Apr 2018-Joule
TL;DR: A comprehensive review of piezoelectric energy-harvesting techniques developed in the last decade is presented, identifying four promising applications: shoes, pacemakers, tire pressure monitoring systems, and bridge and building monitoring.

720 citations