Engineering Graphic Estimation of the Residual Contact Pressure of the Hydraulic Expanding Tubes of Heat Exchangers;

In this paper,finite element analysis was performed to investigate the effects of working conditions on the tightness of the hydraulically expanded tube-to-tubesheet joint,specifically the effects of pressures and temperatures on the minimum residual contact pressure on the sealing circular-bands.

Also,the residual contact pressure,when the hydraulic expanding pressure was unloaded,was calculated.

Study on numerical simulation of tubesheet structural residual contact stress in considering adjacent tube effection

The experimental results show that its hardness can be improved up to 25% and the compressive residual stress can reach-200MPa～-250MPa.

,compressive residual stress(CRS),surface roughness(SR) and micro-structure hardening in shot peening(SP) surface on solid particle erosion(SPE) resistance of Ti6Al4V titanium alloy were evaluated.

,compressive residual stress(CRS),surface roughness(SR) and work-hardening on SPE resistance were investigated.

Influence of residual compressive stress on warm prestress toughening of HSLA steel;

The steel by deep nitriding possessed excellent microhardness gradient and favorable distribution of residual compressive stresses,and the contact fatigue life of nitrided steel under the given load showed a great improvement in relation to carburized 18CrNi4A steel.

The laser shock processing causes the surface layer of metal to plastically deform,and thereby develop a significant residual compressive stress in the surface of metal.

Calculation of contact pressure on TM and VAMACE premium connection casing couplings;

The effect of articular step-off and neniscectomy on joint alignment and contact pressures for fractures of the lateral tibial plateau;

Single chip microcomputer-based inspection of catenaries-pantograph contact pressure;