Papers by Keyword: Static Analysis

Abstract: Functionally graded materials (FGMs) have mechanical properties that vary continuously from one phase to another within a confined volume. In general, these materials exhibit certain amount of scatter in their properties due to different factors. The dispersion in the response values of a structure is due to the scatter in the values of material properties and applied external load. For design purposes, it is essential to know the potential variations in the structural response due to the system material or external randomness. In the present work, free vibration and static analysis on FGM structures with material randomness are considered.

Abstract: The subject of this article is static and dynamic analysis of a tall residential building. The static part is focused on the analysis of the structure loaded by horizontal forces acting due to the effect of wind and by vertical forces of the structure`s own weight and other vertical loads. Dynamic analysis represents the behavior of the structure during seismic event and dynamic characteristics of the structure.

Abstract: This paper presents a practical application of form-finding process of cable-membrane structures. The dynamic relaxation method with kinetic damping is used as the computation method for numerical analysis. A brief description of the construction, a description of the models and the way of solving tasks will be introduced. The correct operation of the implemented algorithm will be compared with a commercial program.

Abstract: The probabilistic design analyses a plate involving uncertain input parameters. These input parameters (geometry, material properties, boundary conditions, etc.) are defined in the software model. The variations of input parameters are defined as random input variables and are characterized by their distribution type (Gaussian, lognormal, etc.) and by their distribution parameters (mean values, standard deviation, etc.). During a probabilistic analysis, software executes multiple analysis loops to compute the random output parameters as a function of the set of random input variables. The values for the input variables are generated either randomly (using Monte Carlo simulation) or as prescribed samples (using Response Surface Methods). In the conclusion, some results of these probabilistic methods are presented.

Abstract: Plunge milling cutter withstanding greater loads in heavy milling can cause tool breakage, cutting vibration, even chatter. Firstly, geometric model of plunge milling cutter on various combinations of axial rake angle and radial rake angle are established. Secondly, with combination different axial rake angle and radial rake angle of plunge milling cutter under static load, the amount of deformation plunge milling cutter are calculated by finite element analysis. Finally, the plunge milling cutter first six natural frequencies are given in plunge milling cutter modal analysis with finite element analysis. The results show that minimum total deformation of plunge milling cutter is given with the axial rake angle 5° and radial rake angle-5 ° of the cutter and when the tool working at frequencies up to 10012HZ has caused vibration within the XY plane.

Abstract: In the current automated high-tech world the applications and use of robot has become the vital role in all areas in industries and in common social applications. The mechanical design process essentials to improve and also it is a way to capable of giving consistent and fast efficient products. One way of altering the process is through reducing the manual work by systematizing the repetitive tasks using static analysis ways in the computer software. With a view to meet the purpose of inspecting the outer surface weldments in steel storage canister used to store the High-level fuel waste at nuclear industry with the help of Non-destructive testing (NDT) equipment. In this research work the new mechanical configuration of the robot arm was designed, and this arm was utilized to carry the vision camera at the end effector to capture the weld surfaces. This paper focuses the mechanical modeling of the manipulator mechanism and finite element (FE) method and analysis of the designed arm with different positions and specific load condition. From this study the statically balanced design of the robot was determined with three different positional conditions. The largest value of displacement and stress produced in the arm also discussed with clear FEA simulation results. In this paper mechanism of seven degrees of freedom robot arm is discussed.

Abstract: Currently much of the specialized programs in computer aided design (CAD) have incorporated into their structure a module of simulation and analysis. With these modules it can be simulated the operation of the various drawings equipment in the 3D format and to analyze critical areas of its. Using these modules allows a quick assessment of design to equipment’s. This paper presents a finite element static analysis on current collector components used on the locomotive LE 060 EA used in Romania. It’s considered the situation given by EP3 pantograph located at maximum height.

Abstract: The subject of article is a comparison of two load bearing structures of medieval trusses in terms of their original design, based on the geometrical concept, as well as from the perspective of their current static analysis, based on modern, standardized calculation procedures. It is a roof above the sanctuary of the Roman Catholic Church in the village of Bela-Dulice from 1409d, and a roof above the sanctuary of the Church of St. Peter of Alcantara in the Franciscan monastery in Okolicne from 1499d. From a typological point of view, both the trusses have a similar rafter collar-beam construction with longitudinal stiffening frame truss and with approximately the same span. In the case of the monastery church in Okolicne, the construction of main cross truss is supplemented by the spike struts. From the geometric analysis of trusses there are obvious different geometric proportional relationships that have been applied in the original design. The aim of static analysis of the load bearing structures using current advanced computing resources is to clarify and compare the static behaviour of the both roof structures.

Abstract: The vehicle may be towed without the engine but it is not possible without the wheels. Road wheel is a significant structural member of the vehicular suspension system that supports the static and dynamic loads encountered during vehicle operation. As in the case of an automobile wheel maximum load is applied on the alloy wheel. Proper analysis of the alloy wheel plays a significant role for the safety of the passenger cars. Alloy wheels which are intended for normal use on passenger cars, undergo three tests and have to pass before going into the production: Dynamic Cornering Fatigue Test, Dynamic Radial Fatigue Test and Impact Test. Most of aluminium alloy wheels manufacturing companies have done several testing of their product however information of their method on simulation test is often kept limited. During a part of research a static and fatigue analysis of aluminum alloy wheel A356.0 was carried out using FEA package. The 3-D model was imported from CATIA into ANSYS using the appropriate format. Finite element analysis (FEA) is carried out by simulating the test conditions to analyze stress distribution and fatigue life of the aluminium alloy wheel rim of passenger car. Experimental analyses are carried out by radial fatigue testing machine for evaluation of fatigue life under influence of camber angle. The test indicates that integrating FEA and nominal stress method is a good and efficient method to predict alloy wheels fatigue life. In this paper by observing the results of both static and dynamic analysis the aluminium alloy is suggested as better material.

Abstract: This paper deals with static analysis of load-bearing steel grid of a transparent roof. Ten structures with various spans (from 12.58 m to 30.08 m) and different heights (from 2.494 m to 7.471 m) have been modelled and analysed. The calculations were repeated for two common used types of the cross-sections - (60 x 40) mm and (60 x 60) mm. Permanent loads (the self-weight, the weight of glass panels) and variable loads (snow, wind) were taken into account. Obtained results were verified by four additional structures. The architects can use resultant graphs (the dimensions, maximum axial forces and maximum vertical displacements) in first stage of the design.