Piston Contact Stress Analysis and Simulation

Fan Jiang

doi:10.4028/www.scientific.net/AMR.941-944.1432

Paper Titles

The Micro-Fabrication of Multidimensional Structure of Silicon by Selection Corrosion
p.1410

Process Design of Strengthening and Toughening Treatment for 65Mn Steel by Powder RE-Boronizing Method under Low Temperature
p.1414

Analysis on Fracture Mechanism of T92 Steel under High Temperature Multiaxial Creep
p.1423

Ballistic Resistance of AA5083-H116 Aluminum Plates against Conical-Nose Steel Projectiles Impact
p.1428

Piston Contact Stress Analysis and Simulation
p.1432

The Damage Analysis of Composite Laminate under the Action of Low Speed Impact and Static Pressure Mark
p.1437

Development and Change of Compressive Strength for Class G Oil Well Cement under High Temperature
p.1441

Method for Determining the Plastic Properties of Metallic Materials by Instrumented Indentation with Dual Pyramidal Indenters
p.1445

Study on Flow Mechanism of Gas Injection in Porous Carbonate Core
p.1453

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 941-944Piston Contact Stress Analysis and Simulation

Piston Contact Stress Analysis and Simulation

Abstract:

Contact stress and Pull-out stress formatted by piston and the valve seat directly affects the piston seal and friction wear performance. It is of great realistic significance to study on distribution of the contact stress and the assembly relationship between piston and valve seat. Finite element analysis methods were used to obtain the distribution of the contact stress in static and dynamic conditions. Problem of piston size selection was analyzed between different assembly interferences. Simulation results indicate that contact surface average Mises stress of valve seat was about equal to yield strength of materials with interference in 0.01mm; while in conditions of interference in 0.02mm and 0.03mm; radial deformation of valve seat was obvious. Based on analysis and considering mechanical properties of materials, unilateral interference between piston and seat would not exceed 0.01mm; when friction coefficient was defined as 0.05 and unilateral interference was set as 0.01mm, output stress would be 892.14N, which far less than hydraulic pressure arising from pull-out stress who would only be 300N. Therefore, 0.01mm unilateral interference can completely meet the use requirements.