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Volume 190, Issue CApr 2024
Publisher:
  • Elsevier Science Ltd.
  • The Boulevard Langford Lane Kidlington, Oxford OX5 1GB
  • United Kingdom
ISSN:0965-9978
Reflects downloads up to 10 Nov 2024Bibliometrics
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research-article
Robust improvement of the finite-element-model updating of historical constructions via a new combinative computational algorithm
Abstract

Finite-element-models are usually employed to simulate the behaviour of historical constructions. However, despite the high complexity of these numerical models, there are always discrepancies between the actual behaviour of the structure and the ...

Highlights

  • Model updating of finite element models to reduce computational cost.
  • Hybrid local–global optimization algorithm combined with machine learning techniques.
  • Validation of the algorithm applied to the updating of a laboratory ...

research-article
Topology optimization for stationary fluid–structure interaction problems with turbulent flow via sequential integer linear programming and smooth explicit boundaries
Abstract

Topology optimization methods face serious challenges when applied to structural design with fluid–structure interaction (FSI) loads, especially for high Reynolds fluid flow, i.e., considering turbulence. In this problem, the information at the ...

Highlights

  • A new geometry smoothing technique applied to TO-FSI problems with turbulent flow.
  • Coupled sensitivities considering strain energy and fluid flow loading.
  • Cases solved for high Reynolds flow using the k-ɛ turbulence model.
  • A ...

research-article
A gradient-evolutionary coupled topology optimization for sheet reinforcement based on the mechanics of Voronoi pattern on dragonfly wings
Highlights

  • The mechanics of the vein domains are revealed to be correlated with morphology.
  • The layout of wing veins is explained by multi-objective optimization.
  • Structural biology is evolved based on the gradient optimization.

Abstract

The intricate network of veins on dragonfly wings has captured the attention of many researchers due to its fascinating configuration and excellent mechanical properties. In this paper, based on the observation of the layout of the vein domains ...

research-article
UMAT4COMSOL: An Abaqus user material (UMAT) subroutine wrapper for COMSOL
Abstract

We present a wrapper that allows Abaqus user material subroutines (UMATs) to be used as an External Material library in the software COMSOL Multiphysics. The wrapper, written in C language, transforms COMSOL’s external material subroutine inputs ...

Highlights

  • We present UMAT4COMSOL, a piece of software to run Abaqus UMAT’s in COMSOL.
  • UMAT4COMSOL enables running advanced material models in a multi-physics environment.
  • All local material models can be considered, including both small and ...

research-article
Computer vision-based quantification of updated stiffness for damaged RC columns after earthquake
Highlights

  • A novel procedure is developed for seismic residual stiffness estimation using image processing techniques.
  • Extensive database of 422 crack patterns from 109 RC column specimens is collected.
  • Two visual damage indices are extracted ...

Abstract

Concrete surface cracks are one of the primary indicators of structural deterioration; thus, crack analysis is crucial to maintain the intact serviceability of the structural components. This research investigates the relation between earthquake-...

research-article
A local–global optimization approach for maximizing the multiphysics frequency response of laminated functionally graded CNTs reinforced magneto-electro-elastic plates
Abstract

Smart materials have garnered significant attention due to their distinct properties and potential applications in various engineering fields. In line with this, this study presents a local–global optimization approach aimed at maximizing the ...

Highlights

  • An innovative numerical framework is presented for optimizing laminated FG-CNTMEE plate structures.
  • The laminated smart plate consists of functionally graded carbon nanotubes embedded in an electro-elastic matrix.
  • The NURBS within ...

research-article
Advanced elasto-plastic topology optimization of steel beams under elevated temperatures
Highlights

  • Topology optimization algorithm considers thermal effects and initial imperfections.
  • Integration of thermoelastic-plastic analysis.
  • BESO method is developed for effective design improvements.
  • Enhances steel beam designs under ...

Abstract

A topology optimization algorithm of steel beams under the influence of elevated temperature, considering the geometrically nonlinear analysis of imperfect structures, is proposed in this work. The proposed methodology is developed for addressing ...

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