Contact Stress and Contact Width Analysis of Corrugated Metal Gasket

Abstract

Previous studies on corrugated metal gaskets have established that the contact width, contact stress, and surface roughness are important design parameters for optimizing gasket performance. However, the contact stress and contact width considering the surface roughness when the leakage occur did not defined yet. In this study, we determined the real contact stress and contact width when leakage started on 25A-size metal gasket. The contact width determined through a comparison between simulation and experimental results. The contact stress determined through a simulation analysis. The experiment involves a helium leakage test using new metal gaskets having different surface roughness levels. The result justified that the real contact width and average contact stress when the leakage started occur were 0.195mm and 800MPa, respectively. There is a good agreement for contact width both by simulation and experiment result. The contact width for flange having surface roughness 1.5μm is longest than the others.

Sealing performance analysis of composite gaskets made of silicone rubber filled with ramie natural fibers

“…It can be concluded also that the sealing performance of the gasket increases as the torque increases. These results agree with the results from previous researchers [4,[14][15][19][20][21][22] which stated that the sealing performance of the gasket increases as the contact stresses increase.…”

“…Other studies investigated about the sealing performance of the gasket using diferent materials [14][15][16][17][18]. Some researchers used a finite element (FE) simulation method to evaluate the sealing performance of the gasket [15][16][17][18][19][20][21][22] while the other researchers used an experimental work to analyse the sealing performance [1,3,7,14,15]. Noshirwaan et al [12] review the characteristics and applications of various gasket made of metals, non-metals, polymers and hybrids while Layth et al [13] provide a comprehensive review of the natural fiber reinforced polymer composites (NFPC) and their applications.…”

“…It was found that higher contact area and contact stress between flanges and gasket provides better sealing performance of the corrugated metal gasket. Nurhadianto et al [19][20], Karohika et al. [21] and Choiron et al [22] investigated the effects of contact area and contact stresses in the sealing performance of the corrugated metal gasket.…”

Optimum Design of Laminated Corrugated Metal Gasket Using Computer Simulation

“…The real measurement of contact width was studied with considering surface roughness and local contact stress have been examined by using numerical analysis and the distribution of contact stress has been clarified. The previous research used a single material SUS304 [6][7][8]. By using elastic design and plastic design mode, it can be denoting the gasket design with 1.5 and 2.5 m flange surface roughness produces no leak, but high clamping load is required.…”

Leakage analysis and ground tests of knife edge indium seal to lunar sample return devices

“…It is always used as a metal gasket. 11 Nurhadiyanto and Haruyama 12,13 analyzed the contact stress and contact width of corrugated metal gasket to optimize gasket performance, and find the optimized surface roughness. For the lunar sample project, it requires a highly reliable seal under a constant pressing force.…”