Effect of Presetting and Deep Rolling on Creep of Torsion Bars

26 Views
11 Downloads
Export citation: ABNT
MOČILNIK, Vinko ;GUBELJAK, Nenad ;PREDAN, Jožef .
Effect of Presetting and Deep Rolling on Creep of Torsion Bars. 
Articles in Press, [S.l.], v. 0, n.0, p. , july 2025. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/effect-of-presetting-and-deep-rolling-on-creep-of-torsion-bars/>. Date accessed: 11 sep. 2025. 
doi:http://dx.doi.org/.
Močilnik, V., Gubeljak, N., & Predan, J.
(0).
Effect of Presetting and Deep Rolling on Creep of Torsion Bars.
Articles in Press, 0(0), .
doi:http://dx.doi.org/
@article{.,
	author = {Vinko  Močilnik and Nenad  Gubeljak and Jožef  Predan},
	title = {Effect of Presetting and Deep Rolling on Creep of Torsion Bars},
	journal = {Articles in Press},
	volume = {0},
	number = {0},
	year = {0},
	keywords = {},
	abstract = {This study explores the creep behaviour of torsion bars by combining experimental testing with numerical modelling. Experimental investigations were conducted on torsion specimens subjected to varying presetting levels and surface treatments via deep rolling, revealing distinct effects on stress relaxation under a constant twist angle. Finite Element Method (FEM) simulations, incorporating in elasto-viscoplastic material behavior, successfully reproduced the time-dependent deformation observed experimentally. The material parameters for the FEM model were derived from experimental data. The findings demonstrate that a two-stage presetting procedure, combined with intermediate deep rolling, induces higher compressive residual stresses in the surface layers compared to a single-stage presetting process. While this method aims to mitigate creep under constant loading conditions, its effectiveness is limited. The reduction in creep strains is observed only up to a presetting level of approximately 4.3%; beyond this threshold, the creep strains increase significantly.},
	issn = {0039-2480},	pages = {},	doi = {},
	url = {https://www.sv-jme.eu/article/effect-of-presetting-and-deep-rolling-on-creep-of-torsion-bars/}
}
Močilnik, V.,Gubeljak, N.,Predan, J.
0 July 0. Effect of Presetting and Deep Rolling on Creep of Torsion Bars. Articles in Press. [Online] 0:0
%A Močilnik, Vinko 
%A Gubeljak, Nenad 
%A Predan, Jožef 
%D 0
%T Effect of Presetting and Deep Rolling on Creep of Torsion Bars
%B 0
%9 
%! Effect of Presetting and Deep Rolling on Creep of Torsion Bars
%K 
%X This study explores the creep behaviour of torsion bars by combining experimental testing with numerical modelling. Experimental investigations were conducted on torsion specimens subjected to varying presetting levels and surface treatments via deep rolling, revealing distinct effects on stress relaxation under a constant twist angle. Finite Element Method (FEM) simulations, incorporating in elasto-viscoplastic material behavior, successfully reproduced the time-dependent deformation observed experimentally. The material parameters for the FEM model were derived from experimental data. The findings demonstrate that a two-stage presetting procedure, combined with intermediate deep rolling, induces higher compressive residual stresses in the surface layers compared to a single-stage presetting process. While this method aims to mitigate creep under constant loading conditions, its effectiveness is limited. The reduction in creep strains is observed only up to a presetting level of approximately 4.3%; beyond this threshold, the creep strains increase significantly.
%U https://www.sv-jme.eu/article/effect-of-presetting-and-deep-rolling-on-creep-of-torsion-bars/
%0 Journal Article
%R 
%& 
%P 1
%J Articles in Press
%V 0
%N 0
%@ 0039-2480
%8 2025-07-09
%7 2025-07-09
Močilnik, Vinko, Nenad  Gubeljak, & Jožef  Predan.
"Effect of Presetting and Deep Rolling on Creep of Torsion Bars." Articles in Press [Online], 0.0 (0): . Web.  11 Sep. 2025
TY  - JOUR
AU  - Močilnik, Vinko 
AU  - Gubeljak, Nenad 
AU  - Predan, Jožef 
PY  - 0
TI  - Effect of Presetting and Deep Rolling on Creep of Torsion Bars
JF  - Articles in Press
DO  - 
KW  - 
N2  - This study explores the creep behaviour of torsion bars by combining experimental testing with numerical modelling. Experimental investigations were conducted on torsion specimens subjected to varying presetting levels and surface treatments via deep rolling, revealing distinct effects on stress relaxation under a constant twist angle. Finite Element Method (FEM) simulations, incorporating in elasto-viscoplastic material behavior, successfully reproduced the time-dependent deformation observed experimentally. The material parameters for the FEM model were derived from experimental data. The findings demonstrate that a two-stage presetting procedure, combined with intermediate deep rolling, induces higher compressive residual stresses in the surface layers compared to a single-stage presetting process. While this method aims to mitigate creep under constant loading conditions, its effectiveness is limited. The reduction in creep strains is observed only up to a presetting level of approximately 4.3%; beyond this threshold, the creep strains increase significantly.
UR  - https://www.sv-jme.eu/article/effect-of-presetting-and-deep-rolling-on-creep-of-torsion-bars/
@article{{}{.},
	author = {Močilnik, V., Gubeljak, N., Predan, J.},
	title = {Effect of Presetting and Deep Rolling on Creep of Torsion Bars},
	journal = {Articles in Press},
	volume = {0},
	number = {0},
	year = {0},
	doi = {},
	url = {https://www.sv-jme.eu/article/effect-of-presetting-and-deep-rolling-on-creep-of-torsion-bars/}
}
TY  - JOUR
AU  - Močilnik, Vinko 
AU  - Gubeljak, Nenad 
AU  - Predan, Jožef 
PY  - 2025/07/09
TI  - Effect of Presetting and Deep Rolling on Creep of Torsion Bars
JF  - Articles in Press; Vol 0, No 0 (0): Articles in Press
DO  - 
KW  - 
N2  - This study explores the creep behaviour of torsion bars by combining experimental testing with numerical modelling. Experimental investigations were conducted on torsion specimens subjected to varying presetting levels and surface treatments via deep rolling, revealing distinct effects on stress relaxation under a constant twist angle. Finite Element Method (FEM) simulations, incorporating in elasto-viscoplastic material behavior, successfully reproduced the time-dependent deformation observed experimentally. The material parameters for the FEM model were derived from experimental data. The findings demonstrate that a two-stage presetting procedure, combined with intermediate deep rolling, induces higher compressive residual stresses in the surface layers compared to a single-stage presetting process. While this method aims to mitigate creep under constant loading conditions, its effectiveness is limited. The reduction in creep strains is observed only up to a presetting level of approximately 4.3%; beyond this threshold, the creep strains increase significantly.
UR  - https://www.sv-jme.eu/article/effect-of-presetting-and-deep-rolling-on-creep-of-torsion-bars/
Močilnik, Vinko, Gubeljak, Nenad, AND Predan, Jožef.
"Effect of Presetting and Deep Rolling on Creep of Torsion Bars" Articles in Press [Online], Volume 0 Number 0 (09 July 2025)

Authors

Affiliations

  • 1
  • University of Maribor, Faculty of Mechanical Engineering, Laboratory for machine parts and structures, Slovenia 2

Paper's information

Articles in Press

This study explores the creep behaviour of torsion bars by combining experimental testing with numerical modelling. Experimental investigations were conducted on torsion specimens subjected to varying presetting levels and surface treatments via deep rolling, revealing distinct effects on stress relaxation under a constant twist angle. Finite Element Method (FEM) simulations, incorporating in elasto-viscoplastic material behavior, successfully reproduced the time-dependent deformation observed experimentally. The material parameters for the FEM model were derived from experimental data. The findings demonstrate that a two-stage presetting procedure, combined with intermediate deep rolling, induces higher compressive residual stresses in the surface layers compared to a single-stage presetting process. While this method aims to mitigate creep under constant loading conditions, its effectiveness is limited. The reduction in creep strains is observed only up to a presetting level of approximately 4.3%; beyond this threshold, the creep strains increase significantly.