土建外文翻译----剪力墙框架结构中的应力分布.docx

附录英文原文及翻译Stress Distribution In a Shear Wall – Frame StructureUsing Unstructured – Refined Finite Element MeshABSTRACTA semi-automatic algorithm for finite element analysis is presented to obtain the stress and strain distribution in shear wall-frame structures. In the study, a constant strain triangle with six degrees of freedom and mesh refinement - coarsening algorithms were used in Matlab? environment. Initially the proposed algorithm generates a coarse mesh automatically for the whole domain and the user refines this finite element mesh at required regions. These regions are mostly the regions of geometric discontinuities. Deformation, normal and shear stresses are presented for an illustrative example. Consistent displacement and stress results have been obtained from comparisons with widely used engineering software.Key Words: Shear wall, FEM, Unstructured mesh, Refinement.1.INTRODUCTIONIn the last two decades, shear walls became an important part of our mid and high rise residential buildings in Turkey. As part of an earthquake resistant building design, these walls are placed in building plans reducing lateral displacements under earthquake loads so shear-wall frame structures are obtained. Since the 1960’s several approaches have been adopted to solve displacements and stress distribution of shear wall structures. Continuous medium approaches, and frame analogy models are the examples of these approaches [1-4]. In the past and today, numerical solution methodsare the main effort area because of the accuracy of solution and the ease of usage in 2D and 3D analysis of shear walls [5-7].Shear walls with openings, coupled shear walls and combined shear wall frame structures can be modeled as thin plates where the loading is uniformly distributed over the thickness, in the plane of the plate. This 2D domain can be subdivided into a finite number of geometrical shapes. In the finite element method (FEM), these simple shaped elements such as triangles or quadrilat