Reinforced Plastic Analysis

In summary, it can be seen that plastics and RPs design analysis follows the same three steps (a) to (c) as that for metals, but there are some differences of emphasis and difficulty. In particular, step (a) is usually more substantial for the newer materials, partly because a full stress/strain/deformation analysis is required and partly because of the need to take account of viscoelasticity, inhomogeneity, and/or anisotropy. For long fiber materials, the component design analysis may need to contain the associated material design analysis. 

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L J. Hart-Smith, Design and Empirical Analysis of Bolted or Riveted Joints, In Joining Fibre-Reinforced Plastics, F, L. Mathews (Editor), Elsevier Applied Science, London and New York, 1987, pp. 227-269. 

Tatsundo Kitamura He is Research and Analysis/Manager of the Japan Reinforced Plastics Society (JRPS) which handles every affairs to promote development of RP/ Composites Industry in Japan. Received a BA degree from Waseda University in 1960. He started to serve for the JRPS since 1977 and consistently engaged in Research Development works for the Industry. Also preside FRP Forum, Inc./a consulting office for R D on RP/ Composites. 

Lee EC, Baldwin K. Material damping characteristics of natural fiber reinforced plastics by DMTA and modal analysis. Proceedings of the 6th International Conference on Woodfiber-Plastic Composites 2001 Madison, WI. Wisconsin Forest Products Society 2002. p 6. 

McCarthy MA, Lawlor VP, Stanley WF. An experimental study of bolt-hole clearance effects in single-lap, multi-bolt composite joints. J Compos Mater 2005 39(9) 799—825. Hart-Smith LJ. Design and empirical analysis of bolted or riveted joints. In Joining fibre reinforced plastics. Elsevier Science 1987. pp. 227—69. 

An explanation is reviewed regarding a particular distinction between the mechanical behaviors of metals and unreinforced reinforced plastics (URPs). The typical stress/strain curve for metal exhibits a linear elastic region followed by yield at the yield stress, plastic flow, and ultimately failure at the failure stress [reinforced thermosets (RTSs) have similar behavior]. Yield and feilure occur at corresponding strains. Thus, yield and failure can be called the critical strains. However, it is easier in many products to restrict factor to a stress analysis alone. 

A subsequent review of stress analysis and strength prediction of fibre reinforced plastic (FRP) mechanically fastened joints [41] identified five common failure modes tension, shear, bearing, cleavage and pull-through (See Fig. 2.11). The tensile strength of a single hole joint is said to depend... 

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