CIMNE 6FP CONTRACT NUMBER: NMP 2-CT-2004-505466

PROHIPP

Work performed:A set of eight different cylinders with different geometries and boundary conditions were analyzed.

This study was proposed by Pedro Roquet to analyze the stress influence in the operating life of the cylinders

CIMNE 6FP CONTRACT NUMBER: NMP 2-CT-2004-505466

PROHIPP

Work performed:

CIMNE 6FP CONTRACT NUMBER: NMP 2-CT-2004-505466

PROHIPP

Work performed:Hidroconforming analysis.

CIMNE 6FP CONTRACT NUMBER: NMP 2-CT-2004-505466

PROHIPP

Work performed:STAC Windows and Unix together.

CIMNE 6FP CONTRACT NUMBER: NMP 2-CT-2004-505466

PROHIPP

Objectives:WP2 will focus in the hydraulic cylinder design and analysis procedures in relation with structural requirements of parts and elements and fluid-dynamic aspects related with cylinder performance, including seal/oil/surface interaction.

Thanks to everyone for their contribution

CIMNE 6FP CONTRACT NUMBER: NMP 2-CT-2004-505466

PROHIPP

Work performed:More than 180 cylinders were analyzed with different loads and boundary conditions.A stress comparison with classical theories were done.

CIMNE 6FP CONTRACT NUMBER: NMP 2-CT-2004-505466

PROHIPP

Work performed:

Point 1 Point 2 End pointStart point

More than 400 cylinders were analyzed under STAC.

CIMNE 6FP CONTRACT NUMBER: NMP 2-CT-2004-505466

PROHIPP

Work performed:

Pressure Drop chart

0

500

1000

1500

2000

2500

0 0.05 0.1 0.15 0.2 0.25 0.3

Piston velocity [m/s]

Pre

ssur

e dr

op [b

ar]

gap 68 gap 49gap 30

Fluid dynamic analysis.

CIMNE 6FP CONTRACT NUMBER: NMP 2-CT-2004-505466

PROHIPP

Exploitable results:

A simple methodology to infer the cylinders life using standard FEM

CIMNE 6FP CONTRACT NUMBER: NMP 2-CT-2004-505466

PROHIPP

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