Railway acoustic problems commonly have a constant cross-section and uniform properties in the longitudinal direction. To solve such 3D with reduced effort, wavenumber domain finite element (2.5D FE) method is introduced which of meshed third dimension represented by transform. The thereby decomposed into combination wavenumbers x direction y-z plane. extended to exterior noise including perfec...

Seth L. Blumerman 1 , and E. Fidelma Boyd 1* 10 11 Department of Biological Sciences, University of Delaware, Newark, DE 19711 1 , U.S. 12 Department of Agriculture, Agricultural Research Service, Delaware State University, Dover, 13 DE 19901 2 14 15 16 17 Corresponding author E. Fidelma Boyd – [email protected] 18 Department of Biological Sciences, 341 Wolf Hall, University of Delaware 19 Newark,...

Abstract Blast loading and its interaction with structures is a complex phenomenon even in the simplest of cases and modelling its effects is a non-trivial task. This complexity is increased when dealing with long duration blast due to the drag loads associated with the dynamic pressure. This paper establishes a scientific benchmark for the debris distribution modelling of masonry panels as the...

A new efficient numerical model termed Applied Element Method (AEM), which can be a new tool for discussing a new philosophy of design of structure, is introduced. Although formulation and material model adopted in the method are simple, highly nonlinear behavior of structures in both static and dynamic conditions can be simulated accurately in reasonable CPU time. Conventionally, structures we...

During earthquakes, pounding of adjacent buildings occurs due to their different dynamic characteristics as well as insufficient separation distance between them. Although earthquake loading is commonly considered in structural design, pounding of adjacent buildings is not usually considered and usually causes highly unexpected damages and failures. Pounding effect was numerically investigated ...

a new approach for analyzing cracked problems in 2d orthotropic materials using the well-known element free galerkin method and orthotropic enrichment functions is proposed. the element free galerkin method is a meshfree method which enables discontinuous problems to be modeled efficiently. in this study, element free galerkin is extrinsically enriched by the recently developed crack-tip orthot...

In this study, the boundary element method is formulated to evaluate hydrodynamic characteristics of bodies including free surface effect. The method is based on two equations, the perturbation potential boundary integral and the pressure Kutta condition, which are solved simultaneously. The method uses isoparametric elements for both quantity and geometric on the boundary. The method is first ...

This paper is concerned with an efficient dual boundary element method for 2d crack problems under antiplane shear loading. The dual equations are the displacement and the traction boundary integral equations. When the displacement equation is applied on the outer boundary and the traction equation on one of the crack surfaces, general crack problems with anti-plane shear loading can be solved ...