Optimum design of composite pressure vessel structure based on 3-dimensional failure criteria
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ORIGINAL RESEARCH
Optimum design of composite pressure vessel structure based on 3-dimensional failure criteria Young H. Park 1
&
James Sakai 1
Received: 15 July 2019 / Accepted: 24 October 2019 # Springer-Verlag France SAS, part of Springer Nature 2019
Abstract Anisotropic composite cylinders and pressure vessels have been widely employed in automotive, aerospace, chemical and other engineering areas due to high strength/stiffness-to-weight ratio, exceptional corrosion resistance, and superb thermal performance. Pipes, fuel tanks, chemical containers, rocket motor cases and aircraft and ship elements are a few examples of structural application of fiber reinforced composites (FRCs) for pressure vessels/pipes. Since the performance of composite materials replies on the tensile and compressive strengths of the fiber directions, the optimum design of composite laminates with varying fiber orientations is desired to minimize the damage of the structure. In this study, a complete mathematical 3D elasticity solution was developed, which can accurately compute stresses of a thick multilayered anisotropic fiber reinforced pressure vessel under force and pressure loadings. A rotational variable is introduced in the formalism to treat torsional loading in addition to force and pressure loadings. Then, the three-dimensional Tsai-Wu criterion is used based on the analytical solution to predict the failure. Finally, a global optimization algorithm is used to find the optimum fiber orientations and their best combination through the thickness direction. Keywords Fiber-reinforced composite . Optimum design . 3-dimentional failure . Pressure vessel
Introduction Boeing presents the 787’s main fuselage as a one-piece composite barrel construction and while it is a very complicated piece of engineering at its simplest the body is essentially an anisotropic composite cylinder or pressure vessel [1]. The example of the 787 shows how far composite construction has developed and highlights the fact that composite cylinders and pressure vessels are being utilized throughout the modern world in automotive, aerospace, chemical and other applications. The high strength and stiffness-to weight ratio combined with corrosion resistance and thermal performance provide a material that outperforms other more traditional homogeneous materials such as steel or aluminum. Unlike a homogeneous material these anisotropic composites require more complicated design and analysis due to the fact that the fiber directions can affect the strength of the material. With the advent of Automated Fiber Placement (AFP), composite * Young H. Park [email protected] 1
Mechanical and Aerospace Engineering Department, New Mexico State University, Las Cruces, NM 88003, USA
cylinders and pressure vessels can be made with optimized fiber orientation that can be precisely placed by machines [2]. Numerous studies have been performed on composite cylinders and pressure vessels using both analytical and finite element analysis methods. These methods seek to find a soluti
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