Thin sheet metal forming with composite material

Abstract

This article focuses on the results of analytical and experimental studies on the mechanical characteristics of polyurethane and composite materials developed on its basis and reinforced with aramid fabrics for their use as an elastic forming tool to manufacture various products for the aviation industry and plate heat exchanger panels made of thin sheet metal. The article presents experimental data obtained by loading polyurethane and composite materials under uniaxial compression, composes a mathematical model, and compares the results of the experiment with the theoretical dependencies obtained in solving the problem of loading the polyurethane sample via the finite element method.

Modeling of continuous molding process with elsatic composite working tool

“…To describe the behavior of a hyperelastic material, the two-parameter Mooney-Rivlin model was adopted, which accurately describes the behavior of a material under strains not exceeding 30-50% [1][2][3][4][5][6][7][8][9][10].…”

“…As an alternative, instead of a rigid working tool, a cheap elastic tool based on elastomers is used [1][2][3][4][5][6][7][8][9][10]. The main such material is polyurethane SKU-7L.…”

“…One of the ways to eliminate this problem is the use of composite polyurethane reinforced with kevlar fabric [10]. This composite has been little studied, which makes it difficult to use.…”

Approaches for Preventing Tool Wear in Sheet Metal Forming Processes

“…Steel is regarded as the most widely employed owing to the abundance of iron in the Earth's crust, its high melting point and its variety of mechanical qualities [8]. However, composites [9,10], elastomers [11], polymers [12], wood [13] and laminated metals [14] can be used as tool material. Witulski et al [15] developed wear-resistant deep drawing tools made of coated polymers (Figure 1).…”