An algorithm for decomposition of sub-domains and quadrilateral mesh generation with line constraints
An algorithm for automatic decomposition of sub-domains is presented.The method of quadrilateral mesh generation for sub-domains with line constraints is presented.The automatic adjustment of boundary nodes by integer linear programming is presented.The ...
An information modeling framework for bridge monitoring
An information modeling framework for supporting bridge monitoring applications is proposed.The framework extends the prior work on the OpenBrIM standards to capture the information relevant to engineering analysis and sensor network.Implementation of ...
SelEQ
SelEQ, a fully integrated framework for ground motion record selection and scaling is presented.SelEQ allows state-of-the-art record selection for both code-based and probabilistic-based seismic performance assessment.The framework makes use of a meta-...
Computer-aided design of dental inlay restoration based on dual-factor constrained deformation
This approach propose an entire framework for modeling inlays that involves cavity contour extraction, tooth positioning, tooth surface segmentation and occlusal surface deformation, which cover almost all important modeling steps for the digital design ...
Crash analysis and evaluation of vehicular impacts on W-beam guardrails placed behind curbs using finite element simulations
Developed FE models of single-faced W-beam guardrails installed behind curbs.Performed nonlinear FE simulations of vehicles impacting roadside curb-guardrails.Evaluated the effects of a curb on the performance of W-beam guardrails at different placement ...
Characterization of creep crack-tip constraint levels for pressurized pipelines with axial surface cracks
Constraint levels for pipelines with axial surface cracks were demonstrated by Q*.Constraint value of internal crack was higher than external crack.Constraint level would decrease as crack shape changed from elliptical to circular.SENT specimen better ...
Optimum topology design of multi-material structures with non-spurious buckling constraints
Removal of spurious buckling modes is treated in optimal topology results.Modified versions of interpolation schemes remove the spurious buckling modes.Optimal multi-material steel composite topology design has buckling constraints.Numerical examples ...
Simulation of the shot peening process with variable shot diameters and impacting velocities
Shot peening causes impacts with random shot locations, sizes and velocities.A velocity distribution is determined from measured shot and dimple size data.Finite element analyses relate impact velocity, shot diameter and dimple size.A trial velocity ...
A Researcher-oriented Automated Data Ingestion Tool for rapid data Processing, Visualization and Preservation
- Thomas Hacker,
- Shirley Dyke,
- Ali Irmak Ozdagli,
- Gemez Marshall,
- Christopher Thompson,
- Brian Rohler,
- Chul Min Yeum
Motivation, architecture, and function of Experiment Dashboard (ED) software prototype are described.ED provided automated data ingestion, aligning with typical researcher laboratory procedures.ED was demonstrated for optical measurement applications in ...
Numerical analyses of aerodynamic characteristics of integrated L-shaped high-rise building
High-precise 2D and 3D numerical simulations are presented.The details of shape coefficient for different length-to-width ratio are available.The velocity distribution and vortex structure along the central shaft of building are illustrated.The reduced ...
Numerical assessment of fatigue design curve of welded T-joint improved by high-frequency mechanical impact (HFMI) treatment
The fatigue performances of HFMI treated welded joints were numerically investigated by structural hot spot approaches.Through thickness at the weld toe approach can effectively study the thickness effect for HFMI treated joints.The thickness correction ...
Salp Swarm Algorithm
- Seyedali Mirjalili,
- Amir H. Gandomi,
- Seyedeh Zahra Mirjalili,
- Shahrzad Saremi,
- Hossam Faris,
- Seyed Mohammad Mirjalili
A novel optimization algorithm called Salp Swarm Optimizer (SSA) is proposed.Multi-objective Salp Swarm Algorithm (MSSA) is proposed to solve multi-objective problems.Both algorithms are tested on several mathematical optimization functions.Two ...
Development and application of maintenance decision-making support system for aircraft fleet
A new reliability evaluation method based on the real-time load information for aircraft structures.Minimize the maintenance cost and maximize the availability of a fleet.A multi-objective decision-making model based on condition-based-maintenance.A ...
Novel numerical method for the analysis of semi-rigid jointed lattice shell structures considering plasticity
A novel numerical method that can consider joint bending stiffness and axial stiffness has been proposed.Both of the plasticity and semirigid joint can be taken into account.Influence of joint bending stiffness and axial stiffness on the behaviour of ...
Fast cylinder variable-stiffness design by using Kriging-based hybrid aggressive space mapping method
Cylinder VS composite is designed by SA-HASM efficiently.Surrogate and coarse models are integrated to obtain coarse solution in SA-HASM.Fine FE model is used to improve the accuracy of coarse model.The EGO is used as direct optimization method to ...
Computational modeling of the cabin interior of the conceptual model of amphibian aircraft Lapwing
This paper examines issues regarding computational modeling of the cabin interior of the conceptual model of amphibian aircraft Lapwing.Objects interior is designed on the basis of ergonomic principles.The stages of modeling a comfortable passenger seat ...
Geometric design and continuity conditions of developable -Bzier surfaces
Two methods of design for developable -Bzier surfaces are proposed.The shape of developable -Bzier surfaces can be adjusted by changing parameter.The relationship between developable -Bzier surfaces and classical developable Bzier surfaces are ...
Whole flow field performance prediction by impeller parameters of centrifugal pumps using support vector regression
A novel empirical model is proposed to predict the multiple performance indices of the whole flow field using related impeller parameters of centrifugal pumps.The complex nonlinearity relationship between multiple impeller parameters and performance ...
Rapid methods for radionuclide contaminant transport in nuclear fuel cycle simulation
Cyder is a software library for modeling generic-geology spent nuclear fuel disposal in a nuclear fuel cycle simulator.Mathematical models of hydrologic contaminant transport were implemented in Cyder.This suite of mathematical models is appropriate for ...
Semi-automatic methodology for augmented panorama development in industrial outdoor environments
- Daniel Lima Gomes,
- Paulo Roberto Jansen dos Reis,
- Anselmo Cardoso de Paiva,
- Aristfanes Corra Silva,
- Geraldo Braz,
- Antnio Srgio de Arajo,
- Marcelo Gattass
A methodology for VR environments creation using augmented panoramas.Semi-automatic annotation of objects in augmented panoramas.A solution for remote visualization and monitoring of industrial field work. The use of virtual reality (VR) environments ...
An efficient method of system reliability analysis of steel cable-stayed bridges
This paper proposes the IHS-EIS method for reliability analysis of steel cable-stayed bridges by integrating the improved Latin Hypercube (IHS) and an effective importance sampling (EIS) proposed in current work.The practical advanced analysis (PAA) ...
CAD/Tolerancing integration
Tolerance Integration in CAD model;Modeling of components with form defects;Modeling of realistic planar and cylindrical joints;The realistic modeling of the parts and assemblies;Joint behavior of realistic components during assembly operation. ...
Quasi-sparse response surface constructing accurately and robustly for efficient simulation based optimization
An effective quasi-sparse response surface based on a few sampling points is proposed.The regularization of the combination of l1 norm and l2 norm is used to increase the robustness of response surface.Cross-validation is employed to calculate the ...
Simulation of the scenario of the biaxial wheel fatigue test
The virtualization of the scenario of a fatigue life validation test of wheels.Three software are used to simulate three important aspects of the test scenario.Use of a tire model in a test facility simulation instead of a vehicle simulation.Novel ...
A stochastic optimization framework for road traffic controls based on evolutionary algorithms and traffic simulation
A general computing framework for optimization of road traffic controls.Software integration of optimization algorithm, traffic model and traffic control.Architecture and implementation of the traffic optimization software.An archive-based genetic ...
Several explanations on the theoretical formula of Helmholtz resonator
The theoretic resonant frequency corresponds to the first order natural frequency.The cutoff frequency depends on acoustic cavity and independent of short tube.The resonant frequencies depend on the modes, and modes depend on geometry.Thickness ...
Parallel implementations of structural similarity based no-reference image quality assessment
We design three parallel implementations to accelerate a structural similarity based method of no-reference image quality assessment.We examine speedups of the three implementations against the sequential method.The implementation using texture memory ...
A computational framework for G/XFEM material nonlinear analysis
An expansion of G/XFEM implementation to physically nonlinear analysis is presented.Combines different elements and analysis models with G/XFEM enrichment strategies.A unified framework for constitutive models is used with G/XFEM for the first time.G/...
Performance of global metamodeling techniques in solution of structural reliability problems
Metamodeling techniques are applied for solving structural reliability problems.The performance of each technique is studied and compared.Implementation details are discussed.Strategies for overcoming techniques limitations are proposed. Solution of ...
