Multi-functional design of a composite high-speed train body structure

Optimum core design to improve noise attenuation performance and stiffness of sandwich panels used for high-speed railway vehicles

“…Hudson et al (2010 applied an ant-colony optimization algorithm to the multiple-objective optimization of a railway vehicle's floor sandwich panel. Wennberg and Stichel (2014) presented a methodology and test case for the design of multi-functional vehicle body panels for a high-speed railway vehicle. Zhou et al (2010) optimally designed a sandwich tube with a prismatic core subjected to internal moving shock loads.…”

Nonsingular crack modelling in orthotropic plates by four equivalent single layers

“…Anisotropic composites (Chaudhuri and Balaraman, 2007; Czig any and De ak, 2012; M esz aros et al, 2013) are often utilized in air-, spacecraft (Smojver and Ivan cevi c, 2010;Ivan cevi c and Smojver, 2011; Ivan cevi c, 2011, 2012;Langdon et al, 2014) and sport industry (Jiang, 2014;Li and Jing, 2014;Su, 2014;Zhang, 2014;Tang, 2014), composite panels are also applied in cars and vehicles (Norhidayah et al, 2014;Wennberg and Stichel, 2014;Khan et al, 2014), ships (Chirica et al, 2011;Chirica, 2013), pressure vessels (Gheshlaghi et al, 2006 and many other engineering applications (Goch et al, 2012). The mechanical behavior of laminated composite plates and shells can be described by different theories.…”

Design and Analysis of Novel Metallic Structural Concepts for Lightweight Freight Railcars

“…Multifunctional optimization of a composite high-speed train structure was studied by Wennberg and Stichel [15]. Their design methodology for a train car body is illustrated in Figure 16 [15] The method consisted of five different levels, A-E, but their study was focused on level C-E. The structure used in level C was derived from one of previous research works of the same authors, Wennberg et al, 2012 [16].…”

“…Where and A are critical buckling stress of a solid strut and cross sectional area of the lattice struts, respectively. Following the common approach in the literature for finding the critical bucking stress of the lattice [64,68], in equation 4-17has to be replaced by given in equation (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). This will result in critical elastic buckling stress of the octet-lattice material:…”

“…Using the equations (4)(5)(6)(7)(8)(9)(10)(11)(12) and (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17), the uniaxial yield strain of the core ( = ) is higher than of the face sheets ( = ). In another word, = 3 .…”