LNMS

Laboratorij za numerično modeliranje in simulacije

  • LNMS
  • Education
  • Research and projects
  • Publications
  • Patents
  • Awards
  • Members

  • RECENT R & D
    • INDUSTRIAL PROJECTS:
    • New connecting method for cylindrical parts
    • DIC measurement of owen cavity
    • Transparent facade panel Qbiss-Air-Transparent

    • SCIENTIFIC RESEARCH:
    • IGUcalc
    • DIC - Digital Image Correlation
    • Consistent tangent operator for cutting-plane algorithm (CPA)
  • PRODUCT DEVELOPMENT
    • INDUSTRIAL PROJECTS:
    • New connecting method for cylindrical parts
    • Transparent facade panel Qbiss-Air-Transparent
    • Sea-wave Dynamic Loading of Sailing Yacht`s Retractable Keel
    • A development of "Easy-Open-End" (EOE) technology
    • Installation effects in Coriolis flowmeters
    • Numerical simulation of progressive stamping process
    • Qbiss-Air facade panel
    • Analysis of the spherical needle valve
    • Analysis of the Reitz fan
    • A development of a clipping mechanism rings
    • Analysis of the casing and blades of hydroelectric power plants
    • Analysis stator bolts in hydroelectric power plants
    • A development of the pouring pot
    • Clipping mechanism for document file
    • Analysis of the cheesemaking tub
    • A design of a press
    • A determination of the starting sheet shape for kitchen sink
    • Stress-strain analysis of the hydraulic cylinder
    • Capacity of bottoms in a silo
    • Analysis of the pipeline made of the EPR black rubber
    • Analysis of aluminum evaporators
    • Analysis of the Beli Križ antenna tower
    • The container for chocolate mass
    • Biological sewage container
    • Tanks for liquefied propane - butane
  • SHEET METAL FORMING
    • INDUSTRIAL PROJECTS:
    • A development of "Easy-Open-End" (EOE) technology
    • Simulation of deep drawing sheet process
    • Selective lubrication and holding in the deep drawing process
    • The process of determining the initial sheet shape from known deformed shape
    • Optimizing the shape of the initial sheet in deep drawing process
    • Computer simulation of deep drawing process for gastro containers

    • SCIENTIFIC RESEARCH:
    • A method for optimal blank shape determination in sheet metal forming
    • BBC2008 – a new yield criterion
    • Analysis of the microstructure near the punching zone
    • Optimal tool shape determination for sheet metal forming
    • Characterization of mechanical behaviour at large strains
    • A new anisotropic elasto-plastic model with elastic modulus degradation
    • The evolution of effective elastic properties of a cold formed stainless steel
    • Modelling of springback in sheet metal forming
    • Prediction of elastic recovery of a formed steel sheet considering stiffness degradation
    • Finite element simulation of sheet fine blanking process
    • Strain path dependent stiffness degradation of a loaded sheet
    • Impact of Young's modulus degradation on springback
  • CONSTITUTIVE MODELLING
    • SCIENTIFIC RESEARCH:
    • Consistent tangent operator for cutting-plane algorithm (CPA)
    • BBC2008 – a new yield criterion
    • Additionally improved accuracy of the NICE scheme
    • A new anisotropic elasto-plastic model with elastic modulus degradation
    • Integration of constitutive equations with the NICE scheme
    • The evolution of effective elastic properties of a cold formed stainless steel
    • Improved explicit integration in plasticity
    • A new integration scheme NICE for explicit FEM programs
    • Modelling of springback in sheet metal forming
    • Prediction of elastic recovery of a formed steel sheet considering stiffness degradation
    • Strain path dependent stiffness degradation of a loaded sheet
    • Impact of Young's modulus degradation on springback
  • TECHNOLOGICAL PROCESSES
    • INDUSTRIAL PROJECTS:
    • A development of "Easy-Open-End" (EOE) technology
    • Modelling of laser surface hardening
    • Numerical simulation of progressive stamping process
    • Simulation of die casting process
    • Thermo-mechanical modelling of continuous casting primary zone
    • Analysis of the casting part
    • A development of a clipping mechanism rings
    • A development of the production processes from thick plates
    • Analysis of the mechanical response of the housing of an electromagnet
    • Selective lubrication and holding in the deep drawing process
    • A development of the technological process for double kitchen sink production
    • Computer simulation of deep drawing process for gastro containers
    • Simulation of deep drawing sheet process
    • Optimization of the tools for extrusion
    • Numerical analysis of steel rolling process
    • Optimization of multi-step process of wire making process
    • Safety ring of the tool for radial extrusion
    • Numerical simulation of the ingot manufacturing process
    • Numerical simulation of the rotational molding process
    • Simulation of electroslag remelting

    • SCIENTIFIC RESEARCH:
    • Mathematical modeling of rotational molding process
    • Mathematical modeling of heat treatment
  • THERMOMECHANICAL ANALYSES
    • INDUSTRIAL PROJECTS:
    • Modelling of laser surface hardening
    • Simulation of die casting process
    • Thermo-mechanical analysis of the gravure plate
    • Thermo-mechanical analysis of compression joints
    • Thermo-mechanical modelling of continuous casting primary zone
    • Analysis of the casting part
    • Thermomechanical analysis of the pressure chamber
    • Analysis stator bolts in hydroelectric power plants
    • A possibility of the crack occurrence due to thermal loading in the NPP Krško
    • A development of the pouring pot
    • Mechanical state in the welding zone after rolling
    • Numerical simulation of the ingot manufacturing process
    • Numerical simulation of the rotational molding process
    • Simulation of electroslag remelting

    • SCIENTIFIC RESEARCH:
    • Characterization of material parameters used in the mathematical modelling of arc welding
    • Numerical simulation of stress relieving of an austenite stainless steel
    • Mathematical modelling of rotary casting - thermomechanical analysis of a mould
    • Mathematical modeling of thermal conditions during solidification
    • Mathematical modeling of heat treatment
    • Finite difference thermo-plastic stress analysis of cyclically thermally loaded problems
    • Study of influence of the plastic hardening in the case of cyclic thermo-plastic problems
    • Influence of phase transformation on stresses in thermal treatment of metals
    • A quasi-static thermoelastic stress state in the semi-plane with sectionally continuous thermal expansion coefficient
  • NUCLEAR ENGINEERING
    • INDUSTRIAL PROJECTS:
    • Passive ventilation system for the reactor building of the Krško NPP
    • Analysis of the valve on the steam line NPP Krško
    • Impact of restrained thermal expansion on NPP Krško
    • About mechanical analysis of piping systems and insulation on the reactor head of the Krško NPP
    • Analysis of residual stresses in the pressurizer nozzle in the Krško NPP
    • Determination of safety factor according to Dang Van criterion under fatigue loads
    • Analysis of the support of the fusion reactor
    • Analysis of the thermal transients of the valve in NPP Krško
    • A low-pressure turbine of the NPP Krško
    • Analysis of the primary piping loop in the NPP Krško
    • A possibility of the crack occurrence due to thermal loading in the NPP Krško
    • Analyzes of the primary cooling loop of the NPP Krško
    • Analysis of the tubes in the steam generator of the NPP Krško
    • Sleeve mounting in the steam generator tubes without welded joint in the NPP Krško
    • Process parameter study of the blowing operation in the manufacture of heat exchanger pipeline systems
    • Fracture mechanics analysis of the RCP casing of NPP Krško
    • Safety analysis of Krško NPP steam generator tubes damaged by outside diameter stress corrosion cracking at tube support plates
    • Analysis of the steam generator in the NPP Krško
  • MULTIPHYSICAL PROBLEMS
    • INDUSTRIAL PROJECTS:
    • Installation effects in Coriolis flowmeters
    • Dinamske obremenitve teleskopske kobilice jadrnice
    • An improved three-dimensional coupled fluid-structure model for Coriolis flowmeters
    • Coupling FEM and BEM for computationally efficient solutions of multi-physics and multi-domain problems
    • Coupled finite-volume/finite-element modelling of the straight-tube Coriolis flowmeter
    • Numerical simulation of wind flow around an elastic inflated membrane
    • Analysis of temperature field in induction heating
    • Simulation of electroslag remelting

    • SCIENTIFIC RESEARCH:
    • IGUcalc
    • On the approximation of induction heating problem optimization
  • NUMERICAL METHODS
    • SCIENTIFIC RESEARCH:
    • Consistent tangent operator for cutting-plane algorithm (CPA)
    • Additionally improved accuracy of the NICE scheme
    • Stability of the NICE scheme
    • Integration of constitutive equations with the NICE scheme
    • Improved explicit integration in plasticity
    • A new integration scheme NICE for explicit FEM programs
    • Coupling FEM and BEM for computationally efficient solutions of multi-physics and multi-domain problems
    • Parallel computing with load balancing
    • About finite element sensitivity analysis of elastoplastic systems at large strains
    • Computer simulation
    • A velocity based approach including acceleration to the finite element computation of viscoplastic problems
    • A procedure for the determination of the blank shape from its deformed shape
    • Numerical solution of the multibody contact problem
    • The comparative analysis of applicability of bem on torsion problem
    • Incremental iterative methods of stress and strain determination in the elastic-plastic range with the FEM
  • OPTIMIZATION
    • INDUSTRIAL PROJECTS:
    • Optimization of the continuous casting mould shape
    • Tool design optimization in extrusion processes
    • Two-stage design optimization of shell structures
    • Optimization of single and multistep wire drawing processes
    • Shape optimization of the blank sheet for deep drawing
    • Safety ring of the tool for radial extrusion

    • SCIENTIFIC RESEARCH:
    • On the approximation of induction heating problem optimization
  • INVERSE IDENTIFICATION
    • INDUSTRIAL PROJECTS:
    • DIC measurement of owen cavity

    • SCIENTIFIC RESEARCH:
    • DIC - Digital Image Correlation
    • Characterization of material parameters used in the mathematical modelling of arc welding
    • Characterization of mechanical behaviour at large strains
    • Usage of the yield curve in numerical simulations
    • Identification of the yield curve of a sheet metal after onset of necking
    • Identification of the moisture transport parameters in spruce wood
    • Thermo-rheological characterization
    • Identification of the temperature dependent material properties
    • Numerical analysis of material properties of metals on the basis of cooling curves
  • BIOMECHANICS
    • SCIENTIFIC RESEARCH:
    • Applying thermomechanical analogy to predict the arterial residual stress state
    • Modelling of the mechanical response of the carotid artery
  • THEORETICAL MECHANICS
    • SCIENTIFIC RESEARCH:
    • Analytical solutions in elasto-plasto bending of beams with rectangular cross section
    • Analytical tracing of the evolution of the elasto-plastic state during the bending of beams
    • Two approaches to convected frames in solid analysis in finite deformations
    • On the influence of the loads, acting parallel to the crack surface
    • Solving of the contact frictional problem
    • Parametric analysis in the field of fracture mechanics
    • Using real and complex analysis in classical and visco-elastomechanics
    • Contact Problems in the Large Displacement Beam Theory
    • Modelling of a rolling contact problem with the viscoelastic material response included
    • Contact problems in viscoelastic materials
    • Bending boundary problems of an infinite plate with cuts
    • Determination of the stress-strain state in two-fold connected plates
    • Solution of boundary problems of theory of elasticity by means of Lauricella-Šerman integral equation
    • Solution of plate bending problem by BEM
    • Bending of thin uniaxial curved elements with inconstant rigidity and big displacements