Lennart Josefson

2024

Computationally efficient simulation methodology for railway repair welding: cyclic plasticity, phase transformations and multi-phase homogenization

Orbital friction welding of steel bars – heat generation and process modelling

2022

Homogenization based macroscopic model of phase transformations and cyclic plasticity in pearlitic steel

Simulerade svetsprocesser - hjälp för digitalt underhåll

LOAD CAPACITY OF SANDWICH PANEL WITH CORE FOAM EVALUATED BY 3-POINT BENDING TEST

ISSC 2022 Committee V.3 - Materials and Fabrication Technology

BENCHMARK STUDY OF WELDING DEFORMATIONS IN STIFFENED PLATE

Residual stresses in thermite welded rails: significance of additional forging

Validation of the ductile fracture modeling of CGI at quasi-static loading conditions

A numerical sensitivity analysis on the cohesive parameters of a carbon-steel single lap joint

2020

Residual stresses in thermite welded rails: significance of additional forging

FE modeling and simulation of machining Alloy 718 based on ductile continuum damage

A gradient enhanced damage growth model for ductile fracture

A ductile fracture model based on continuum thermodynamics and damage

2018

ISSC 2018 Committee V.3 - Materials and Fabrication Technology

A viscous regularized damage growth model for ductile fracture

Simplified FEA models in the analysis of the redistribution of beneficial compressive stresses in welds during cyclic loading

Mesh objective continuum damage models for ductile fracture

Mesh objective damage modeling of ductile fracture at visco-plastic continuum response

Mesh objective models for ductile fracture based on a damage phase field concept

Ductile fracture modeling based on a mesh objective element removal technology

Welding of rails and how it affects of crack initiation and propagation

Assessment of uncertainties in life prediction of fatigue crack initiation and propagation in welded rails

Modelling chip formation of alloy 718

Assessment of uncertainties in life prediction of fatigue crack propagation in welded rails

Assessment of uncertainties in life prediction of fatigue crack initiation in rails – influence of residual stresses from manufacturing

Investigation of the rolling contact fatigue resistance of laser cladded twin-disc specimens: FE simulation of laser cladding, grinding and a twin-disc test

Fatigue crack growth in a welded rail under the influence of residual stresses

Fatigue evaluation of surface coated railway rails using shakedown theory, finite element calculations, and lab and field trials

Two-material rail development: field test results regarding rolling contact fatigue and squeal behaviour

Fatigue crack growth in welded rails

Redistribution of stresses from manufacturing operations during service loads and the effect on fatigue life of built-up structures

Two-material rail development: Field test results regarding rolling contact fatigue and squeal behaviour

Two-material rail for RCF and noise control

Prevention of RCF damage in curved track through development of the INFRA-STAR two-material rail

Modelling of rolling contact fatigue of rails

Shakedown limits in three-dimensional wheel-rail rolling-sliding contacts

Two-material rail development to prevent rolling contact fatigue and to reduce noise levels in curved rail track

A method for prediction of fatigue crack initiation in railway rails

Finite element analyses of rolling contact fatigue crack initiation in railheads

Prediction of fatigue crack initiation for rolling contact fatigue

Models for Cyclic Ratchetting Plasticity - Integration and Calibration

Rolling contact fatigue of rails-finite element modelling of residual stresses, strains and crack initiation

Fatigue life and crack closure in specimens subjected to variable amplitude loads under plane strain conditions

Assessment of conditions for initiation of cracks in the heads of railway rails due to rolling contact fatigue

Models for Cyclic Ratchetting Plasticity - Comparison and Integration

Prediction of fatigue life based on level crossings and a state variable