Several theoretical homogenisation methods are available, such as Chamis’ micromechanical model equations, and the asymptotic mean-field homogenisation approach by Mori–Tanaka. A common approach to designing parts with composite materials is to homogenise the elastic stiffness properties between scales, which provides an estimate for the effective elastic properties. Nevertheless, much research has been conducted to address these design issues. However, engineering with composites is more challenging than metals, because their properties are inherited from constituent materials and depend on manufacturing process, material properties, geometrical configurations, etc., which leads to uncertainties at different scales. These properties are the result of using materials differing in composition, where the individual constituents retain their separate identities, and act together to give the necessary mechanical strength and stiffness to the composite part. The alternative is composite materials, which can be designed with customisable properties to support the applied loads, leading to a significant decrease in weight, and potentially creating parts with specific capabilities. For many materials, such as metals, design strength and stiffness characteristics are usually met by providing excess unnecessary strength in unloaded directions leading to weight and cost increase.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |