Robust improvement of the finite-element-model updating of historical constructions via a new combinative computational algorithm
- Javier Naranjo-Pérez,
- Rubén Rodríguez-Romero,
- Pablo Pachón,
- Víctor Compán,
- Andrés Sáez,
- Aleksandar Pavic,
- Javier Fernando Jiménez-Alonso
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 ...
Topology optimization for stationary fluid–structure interaction problems with turbulent flow via sequential integer linear programming and smooth explicit boundaries
- Lucas O. Siqueira,
- Rômulo L. Cortez,
- Raghavendra Sivapuram,
- Shahin Ranjbarzadeh,
- Rafael dos S. Gioria,
- Emílio C.N. Silva,
- Renato Picelli
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 ...
A gradient-evolutionary coupled topology optimization for sheet reinforcement based on the mechanics of Voronoi pattern on dragonfly wings
- 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.
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 ...
UMAT4COMSOL: An Abaqus user material (UMAT) subroutine wrapper for COMSOL
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 ...
Computer vision-based quantification of updated stiffness for damaged RC columns after earthquake
- 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 ...
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-...
A local–global optimization approach for maximizing the multiphysics frequency response of laminated functionally graded CNTs reinforced magneto-electro-elastic plates
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 ...
Advanced elasto-plastic topology optimization of steel beams under elevated temperatures
- 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 ...
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 ...