1. Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Numerical Analysis of Laser-Textured Piston-Rings in the Hydrodynamic Lubrication Regime J. Tribol. 2012;134(4):041702-041702-8. doi:10.1115/1.4007347 The piston/cylinder liner system (top). Magnified, a piston ring segment (bottom) is partially textured with microdimples. Figure Legend:

2. Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Numerical Analysis of Laser-Textured Piston-Rings in the Hydrodynamic Lubrication Regime J. Tribol. 2012;134(4):041702-041702-8. doi:10.1115/1.4007347 Pressure distributions for flat-faced and barrel-faced piston rings with both (a) central and (b) edge texture patterns Figure Legend:

3. Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Numerical Analysis of Laser-Textured Piston-Rings in the Hydrodynamic Lubrication Regime J. Tribol. 2012;134(4):041702-041702-8. doi:10.1115/1.4007347 Geometrical parameters of the piston ring/cylinder liner system for both central (light gray) and edge (dark gray) textured piston rings. The piston ring cross section of a single row of dimples is shown (bottom); the dashed part indicates the half of the row that is considered by means of symmetric boundary conditions. Figure Legend:

4. Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Numerical Analysis of Laser-Textured Piston-Rings in the Hydrodynamic Lubrication Regime J. Tribol. 2012;134(4):041702-041702-8. doi:10.1115/1.4007347 Two types of texture patterns, “regular” and “shifted,” are shown (left). The optimal dimple length perpendicular to the slider movement is found, however, at the limit BD,opt≈BD→B, producing the same “optimal” texture pattern for both configurations (right). Figure Legend:

5. Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Numerical Analysis of Laser-Textured Piston-Rings in the Hydrodynamic Lubrication Regime J. Tribol. 2012;134(4):041702-041702-8. doi:10.1115/1.4007347 Load capacity Cp and dimensionless friction force Cf for fully textured piston rings (α=1.0) as a function of the piston ring curvature κ for different dimple density ratios s, and a=2 Figure Legend:

6. Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Numerical Analysis of Laser-Textured Piston-Rings in the Hydrodynamic Lubrication Regime J. Tribol. 2012;134(4):041702-041702-8. doi:10.1115/1.4007347 Friction coefficient Cμ as a function of the dimensionless curvature κ for fully textured piston rings with different dimple density ratios s Figure Legend:

7. Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Numerical Analysis of Laser-Textured Piston-Rings in the Hydrodynamic Lubrication Regime J. Tribol. 2012;134(4):041702-041702-8. doi:10.1115/1.4007347 Load capacity Cp and friction force Cf of central-textured piston rings as a function of the dimensionless curvature κ for different values of the partial-texturing parameter α, and dimple depth and density ratios of a=2 and s=0.4, respectively Figure Legend:

8. Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Numerical Analysis of Laser-Textured Piston-Rings in the Hydrodynamic Lubrication Regime J. Tribol. 2012;134(4):041702-041702-8. doi:10.1115/1.4007347 Load capacity Cp and friction force Cf of edge-textured piston rings as a function of the dimensionless curvature κ for different values of the partial-texturing parameter α, and dimple depth and density ratios of a=2 and s=0.4, respectively Figure Legend:

9. Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Numerical Analysis of Laser-Textured Piston-Rings in the Hydrodynamic Lubrication Regime J. Tribol. 2012;134(4):041702-041702-8. doi:10.1115/1.4007347 Friction coefficient Cμ of central-textured and edge-textured piston rings as a function of the dimensionless curvature κ for different values of the partial-texturing parameter α, and dimple depth and density ratios of a=2 and s=0.4, respectively Figure Legend:

10. Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Numerical Analysis of Laser-Textured Piston-Rings in the Hydrodynamic Lubrication Regime J. Tribol. 2012;134(4):041702-041702-8. doi:10.1115/1.4007347 Flow-rate imbalance fE for fully textured (α=1.0) and partially textured (α=0.8) piston rings (with a=2.0) as well as for untextured piston rings Figure Legend: