ABSTRACT This paper deals with a comparative study for the analysis of various types of conventional bridges used in civil structure. As well known, the effective static and dynamic analysis of conventional masonry structures, especially for the case of the seismic excitation, requires the use of advanced computational methods. This is obviously necessary to obtain the realistic determination of the stress distribution in the masonry parts of a conventional structure under static and dynamic loading, taking into account the particular characteristics of the construction, the complexity of its geometry and the foundation. However, in each case of calculation, there are various difficulties, which demand some drastic simplifications in order to idealize complicate monumental structures as relatively simple models. Especially in the analysis of stone masonry bridges by the use of 2D or 3D finite element modeling, walls, piers and arches, which are the main construction parts of old bridges, are commonly described by shell or beam elements. The achievement of a model lies on the possibility to reflect the true behaviour of an old bridge without a useless increase of the computational time due to complexity of the model, and/or manual interventions for a better understanding of the bridge behaviour.
ABSTRACT The main aim of this project is to perform a finite element analysis on steel storage rack columns. Rack systems for pallet storage are important industrial structures by number and commercial value, yet they have been considered only recently in studies aiming at defining practical design rules for their safe use. These structures are always composed with metal elements: the fabrication of rack structures constitutes, indeed, an important application of cold formed steel products. The need for continuously loading and unloading the shelves in service has induced designers to avoid bracing elements in the longitudinal direction of the racks. Therefore, in many cases lateral stability in this direction is ensured only by the connections between beam and column and by the constraint offered by the base of the columns. Here we are using finite element analysis. At last the results are tabulated. The part modeling is done by using Pro-E and the assembly is also done by the same software. This will also help us to learn the 3D modeling software and the analyzing software.
ABSTRACT Beams are the simplest structural elements that are used extensively to support loads. They may be straight or curved ones. For example, hinged at the left support and is supported on roller at the right end. Usually, the loads are assumed to act on the beam in a plane containing the axis of symmetry of the cross section and the beam axis. The beams may be supported on two or more supports. The beams may be curved in plan. Beams carry loads by deflecting in the same plane and it does not twist. It is possible for the beam to have no axis of symmetry. In such cases, one needs to consider unsymmetrical bending of beams. In general, the internal stresses at any cross section of the beam are: bending moment, shear force and axial force. In this project structural analysis of a beam with varying loads and boundary conditions is analyzed. In analyzing the part, two tools-modeling and simulation are used. The design is done using 3D software, Pro E. The simulation part will be carried out using the Analysis software, ANSYS.
ABSTRACT Beams are the simplest structural elements that are used extensively to support loads. In this project comparative analysis of U-type, H-type, C-type rolled steel beams is analyzed. The different beams are designed using the Pro E software as per the requirement. This is the first step in the analysis part. The created model in 3D is exported to ANSYS by converting it to IGES format. The imported model is meshed in ANSYS and boundary constrains are defined. With the boundary constrains and load applied, the analysis is carried out and the values are tabulated. Thus a comparative analysis of U-type, H-type, and C-type rolled steel beams is carried out using ANSYS. This project will also help to learn Pro E and also ANSYS.
ABSTRACT This study deals with the structural analysis of reinforced concrete beams, and solid beams for various loads. It is assumed that the behavior of these members can be described by a plane stress field. Concrete and reinforcing steel are represented by separate material models which are combined together with a model of the interaction between reinforcing steel and concrete through bond-slip to describe the behavior of the composite reinforced concrete material. The material behavior of concrete is described by two failure surfaces in the biaxial stress space and one failure surface in the biaxial strain space. Concrete is assumed as a linear elastic material for stress states which lie inside the initial yield surface. For stresses outside this surface the behavior of concrete is described by a nonlinear orthotropic model, whose axes of orthotropy are parallel to the principal strain directions.
SYNOPSIS Cold-Formed Steel (CFS) is the common term for products made by rolling or pressing thin gauges of sheet steel into goods. Cold-formed steel goods are created by the working of sheet steel using stamping, rolling, or presses to deform the sheet into a usable product. Cold worked steel products are commonly used in all areas of manufacturing of durable goods like appliances or automobiles but the phrase cold form steel is most prevalently used to describe construction materials.. Cold-formed steel construction materials differ from other steel construction materials known as hot-rolled steel. The strength of elements used for design is usually governed by buckling. The analysis of the cold form steel purlin is carried out by the analyzing software after the 3d model creation.
SYNOPSIS This project is to create models of the building walls and to predict reaction forces, deflection, and damage caused by different blast loads. The blast in a wall surfaces may cause different loads in different places. The wall has the complex material models in it. The deflection and damages may occur in different ranges in the blasted area. The ANSYS software accurately simulates shock and stress wave propagation during short-duration transient events. Blast load pressure was applied to the external surfaces of the walls. Deflection, reaction force, and damage results were used to determine the need for additional wall thickness.
ABSTRACT A dam foundation system can be modeled and analyzed with great-accuracy using finite element method (FEM) while considering the effect of various materials involved. But as the size of the dam-foundation system increases, this method requires large computer memory and hard disc space. Sub structuring of large dam foundation systems provides a solution to the problem faced in one-stage finite element analysis. A gravity dam is a massive sized dam fabricated from concrete and designed to hold back large volumes of water. By using concrete, the weight of the dam is actually able to resist the horizontal thrust of water pushing against it. This is why it is called a gravity dam. Gravity essentially holds the dam down to the ground, stopping water from toppling it over.
SYNOPSIS The project carries the stress analysis in the lift model. The geometric details such as holes, which were not relevant to the stress analysis, were removed in order to simplify the meshing procedure. A finite element model was generated using 3D thick-shell and higher-order solid element types throughout the solid model. The bolted and welded connections were modeled as bonded contact between the mating surfaces. From carrying out the Finite Element Analysis it was established that there were no significant areas beyond the yield stress and Ultimate Tensile Strength (UTS) of the material, in the model.
SYNOPSIS The blast vent panel was made up of a single skin of steel plate which was spanning on to a supporting steel structure. The model was meshed entirely with membrane elements. The load was applied as a pressure on one face of the panel. The results showed that the panel was capable of resisting the externally applied blast pressure but enabled venting in the event of an internal detonation. On inspection of the results it could be seen that the analysis had been successful in modeling.